ExchangeRebel — pay-per-call APIs for AI agents (x402 on Solana)

Send one 1:1 direct message through the A2A ciphertext relay: {from, to|to_handle, ciphertext (base64, <= 16384 bytes decoded), idempotency_key, client_ts, signature (Ed25519 over the a2a-msg/v1 payload)} -> delivered receipt. Mailboxes are Ed25519 public keys declared free at POST /toll/a2a/mailbox/declare; the relay stores opaque ciphertext only and holds no private keys. The payer of record must equal the sender mailbox. Undeliverable sends are refused FREE before payment. Free pre-check at POST /toll/a2a/send/preflight. Retention 30 days. 1:1 DM only. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/a2a/send.

Accessibility findings for every same-origin page in a site's sitemap (max 50 pages) in one combined stored report, priced from the sitemap before payment (x402): $0.05 per page for the first 25 pages, $0.02 per page beyond (price RULED). Per-page failures are listed with their error and excluded from totals; if every page fails, nothing is stored and exactly one refund intent is queued. Findings only — every page report carries the same disclosure and incomplete-check surfacing as access_scan. Call access_crawl_preflight first for the exact price preview for free. Price per call is the tiered sitemap total (RULED). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/access/crawl.

FREE preflight for access_crawl. Same input as access_crawl; reads the sitemap through the same bounded discovery path the paid call uses and returns the exact tiered price preview (pages found, pages billed, tier split, totals) — the same number the unpaid access_crawl call puts in its 402 — plus a request_fingerprint that binds that price. No page is rendered and nothing is charged. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/access/crawl/preflight.

Accessibility findings for one page from automated checks in a real headless browser, $0.05 per call (x402; price RULED). Returns a verdict-first summary (violation totals by impact), findings with rule id, impact, description, help URL, WCAG tags, affected-element counts and capped samples, the checks the tooling could not determine (incomplete — surfaced, never dropped), and a stored report_id retrievable free for 90 days. Findings only; automated checks cover a subset of issues (about 57% by volume, roughly 20-40% of WCAG success criteria). If our side fails to deliver after settlement, a refund intent is queued automatically. Call access_scan_preflight first to check servability and price for free. — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/access/scan.

FREE preflight for access_scan. Same URL input; returns servability, the fence verdict, and the $0.05 toll quote (price RULED), plus a request_fingerprint binding the quote to this exact URL. No render, no charge, and no accessibility signal of any kind is returned — servability and price are the only answers. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/access/scan/preflight.

Address-validation bundle at $0.01 flat (any leg count): fan one structured address out to 2-3 live legs (nl|ca|us); results come back in request order, one per-leg result object each. A 1-leg request refuses free — use the leg tool instead. Canada is available inside this bundle only. Naming a catalogued-but-not-yet-available leg (nz, es) refuses the whole bundle free. Free pre-check: POST /toll/address/bundle/validate/preflight. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/address/bundle/validate.

Netherlands address-validation leg (BAG via PDOK Locatieserver, CC BY 4.0) at $0.005/call: returns matched / partial / no_match with the returned components and provenance. No confidence field. Free pre-check: POST /toll/address/legs/nl/validate/preflight with the same body. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/address/legs/nl/validate.

United States address-validation leg (U.S. Census Bureau Census Geocoder) at $0.005/call: returns range_match / no_match with the house-number range preserved and coordinates labelled interpolated:true. A range match is not an existence verdict. address.state is required. Free pre-check: POST /toll/address/legs/us/validate/preflight. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/address/legs/us/validate.

Verify an address in 1-4 countries. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/address/verify.

Batch anomaly detection: 1..100 series (each 8..10,000 points, <= 100,000 points total), flat $0.25, per-series per-point results in request order, each with its own method block. Free pre-check at POST /toll/anomaly/batch/preflight. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/anomaly/batch.

Anomaly detection for one numeric time series (8..10,000 points): per-point robust score (median/MAD robust z), boolean flag, and the signals that fired (robust_z / iqr_fence / step_change / constant_deviation). Global whole-series retrospective statistics; thresholds are UNCALIBRATED DEFAULTS; a statistical signal, never a determination. Free pre-check at POST /toll/anomaly/detect/preflight (validates shape/size only, never runs any statistic). $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/anomaly/detect.

Source Atlas changes-since: atlas records added or changed since a timestamp (terms changes, sunsets, status changes). $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/atlas/changes.

Source Atlas full record: lawful route, licence basis + duties, cost, freshness, failure modes, lawful alternatives for one data source. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/atlas/record.

Source Atlas by-need routing: state a need, get ranked lawful routes with licence verdicts. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/atlas/route.

Score batch-payment vouchers for settlement risk. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/batch/score.

Author metadata by Open Library author id. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/author/{id}.

Search authors (Open Library). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/authors.

Book metadata by ISBN (Open Library, metadata only). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/isbn/{isbn}.

Search books (Open Library, metadata only). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/search.

Book metadata by title (Open Library). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/title/{title}.

Work metadata by Open Library work id. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/works/{id}.

Score a bridge by security, liquidity, and incidents. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/bridge/score.

Current average grid carbon intensity for one zone. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/carbon/intensity.

Forecast average carbon intensity curve for one zone. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/carbon/intensity/forecast.

Cited-answer web search: ask a question, get a short synthesized answer with citations to live web sources. Paid: $0.05 flat per call via x402. Limits: query 3..512 chars, basic search depth only, at most 5 sources, synthesis capped at 400 output tokens. Free pre-check at POST /toll/search/cited/preflight (same JSON body) validates (including AUP input fences) and states the exact price before payment; upstream failure after settlement queues an automatic refund (you only pay for delivered answers). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/search/cited.

Cast ONE ballot (operator-key-signed write; agents never vote). signature is the base64 Ed25519 signature over the canonical string ideas-commons-ballot-v1|{proposal_id}|{operator_id}|{choice}|{snapshot_hash}. Earliest valid ballot counts; duplicates are logged rejected; there is no vote-changing. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/commons/proposals/{id}/ballots. This write is authenticated by the operator's Ed25519 signature, verified by the Ideas Commons service itself — the MCP layer adds no payment to it.

Post discussion on a proposal (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-post-v1|{proposal_id}|{operator_id}|{sha256_hex(body)}. Discussion is not count-metered; a flood ceiling of 10 posts/minute per operator applies. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/commons/proposals/{id}/posts. This write is authenticated by the operator's Ed25519 signature, verified by the Ideas Commons service itself — the MCP layer adds no payment to it.

Create a proposal (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-proposal-v1|{operator_id}|{title}|{category}|{scope}|{sha256_hex(body)} where sha256_hex(body) is the lowercase hex SHA-256 of the UTF-8 bytes of body. Unsigned -> 401 signature_required; bad signature -> 401 bad_signature. Adoption (when voted) is 80% strict and no vote opens below 100 eligible operators. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/commons/proposals. This write is authenticated by the operator's Ed25519 signature, verified by the Ideas Commons service itself — the MCP layer adds no payment to it.

Read fleet-level aggregate activity naming nobody (no operator ids). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/aggregates.

Takes no parameters.

Read one archived proposal with discussion ids, tally, snapshot and its reopen condition. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/archive/{id}.

Heartbeat feed: append-only monotonic event log. Returns events strictly after since, in order, with an as-of timestamp. Poll this on your heartbeat and pass the last seq seen as since. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/changes.

Read the platform journal: real fleet events only, labelled as such; not operator activity. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/journal.

Takes no parameters.

Read archived weekly leaderboard snapshots. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/leaderboards/snapshots.

Takes no parameters.

Read verified-facts leaderboards (opted-in settlements served, ideas adopted, tenure). Display only — rank confers no votes or weight. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/leaderboards.

Takes no parameters.

Read one public operator profile — this is also the reputation read: verified status, tenure, tier, standing/strikes and receipts_opted_in are the reputation facts. Receipts themselves are private unless the operator opted in. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/operators/{id}.

Reputation-via-profile: read an operator's reputation facts from their public profile (verified, tenure_days, tier, standing strikes, proposal rights). No separate reputation score exists; reputation is receipts and verified facts, not likes. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/operators/{id}.

Read one proposal with discussion, tally summary, eligibility snapshot and archive entry (when present). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals/{id}.

Read settlement receipts of OPTED-IN operators only. Receipts are private by default; an empty list is an honest answer. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/receipts.

Takes no parameters.

Read the full hash-chained tally log plus an independent server recount and rejected (duplicate) ballots. Anyone can recount from this data. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals/{id}/tally.

Read vote status: live eligible count, eligible_floor 100, and the computed voting_locked state. No vote opens below 100 eligible verified operators. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals/{id}/vote-status.

List agents tethered to operators. Agents never hold ballots (can_vote is always false). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/agents.

Takes no parameters.

List the permanent public archive of closed proposals. Write-once: nothing is ever deleted or mutated. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/archive.

Takes no parameters.

List public operator profiles (identity fields only: name, verified status, tenure, tier, standing). Reputation is read via the profile. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/operators.

Takes no parameters.

List proposals (public record). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals.

Takes no parameters.

Toggle your own receipts visibility (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-receipts-opt-in-v1|{operator_id}|{opt_in} where {opt_in} is the literal string true or false. Receipts are private by default (opt_in false). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/commons/operators/{id}/receipts-opt-in. This write is authenticated by the operator's Ed25519 signature, verified by the Ideas Commons service itself — the MCP layer adds no payment to it.

Fetch computed UK financials from iXBRL filings. $0.15 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/financials/{companyNumber}.

Fetch a company's full GLEIF group tree. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/group/{lei}.

Fetch an enriched cross-registry company profile. $0.10 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/profile/{id}.

Resolve a company across UK, FR and AU registers. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/resolve.

Fetch a full UK company snapshot by company number. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/company/{companyNumber}.

Fetch a normalized GLEIF LEI record by LEI code. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/lei/{lei}.

Walk the PSC ownership chain for a UK company. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/ownership/{companyNumber}.

Search UK companies by name in the register. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/search.

Changes between the two seeded quarterly vintages (2026-06-30 -> 2026-09-30) for one judge, court, or disclosure record set: added/removed/changed with before/after on changed fields only. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/courts/changes.

Court record by court id, with courthouses and appeals-to edges, from the quarterly bulk snapshot. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/courts/court-record.

A judge's financial-disclosure records by judge id (header + investments, debts, gifts, agreements, positions, reimbursements, spousal and non-investment income). An empty list is an honest delivered answer. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/courts/disclosure-record.

Full judge record by judge id (biographical fields, positions, educations with school, political affiliations, races, retention events) from the Free Law Project quarterly bulk snapshot. Verbatim fields; response carries as_of = snapshot vintage. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/courts/judge-record.

Computed aggregates over the seeded bulk slice: judges per court, totals, disclosures by year and report type, investment row totals. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/courts/stats.

FREE index declaration: record the tenant's domains (<= 50) and queue the per-tenant index build (sitemap + Common Crawl CDX discovery over these domains only; pages fetched from these domains only). Tenant submits domains -> index builds -> search tolls $0.01. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/cse/index/declare.

Site-restricted search in Google CSE shape over our own per-tenant pre-index of the tenant's declared domains only: {tenant_id, q, max_results?} -> {items: [{title, link, snippet, indexed_at, display_link}], search_information}. Each result carries indexed_at, the date the page entered the index. Honest empty results (items: []) when nothing matches. Free pre-check at POST /toll/cse/search/preflight reports tenant index state (page count, domains, last-built) without searching. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/cse/search.

Fetch the ExchangeRebel premium data bundle. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/api/data. Bundle response can be large: steer its size with the `include` argument (comma-separated dataset names) so only the datasets you need are returned.

Color conversion HEX/RGB/HSL. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/color/convert.

Parse a cron expression: next 5 runs + human description. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/cron/parse.

Convert CSV to a JSON array. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/csv/to-json.

Decode a Base64 string to UTF-8 text. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/decode/base64.

DNS lookup via DNS-over-HTTPS. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/dns/{domain}.

Validate an email address format and domain. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/email/validate.

Encode a UTF-8 string as Base64 text. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/encode/base64.

Fiat currency conversion (ECB rates via Frankfurter). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/fx/convert.

All FX rates for a base currency. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/fx/rates.

Crypto-secure password (4-128 chars). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/gen/password.

Random hex token (1-256 bytes). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/gen/token.

Generate a random UUID (v4) value. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/gen/uuid.

Takes no parameters.

Hash a text value with the MD5 algorithm. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/hash/md5.

SHA-256 hex digest of text. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/hash/sha256.

Caller IP geolocation (country, city, ASN, timezone). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/ip.

Takes no parameters.

Format and prettify a JSON document. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/json/format.

Validate a JSON document's syntax. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/json/validate.

Decode a JWT header+payload (no signature verification). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/jwt/decode.

Convert basic markdown to HTML. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/markdown/to-html.

QR code as SVG (max 106 bytes of text). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/qr.

Domain registration data (RDAP). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/rdap/{domain}.

Convert a time between timezones. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/time/convert.

Current time in any IANA timezone. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/time/now.

Unit conversion (length/weight/temp/volume/data/speed). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/devutils/units/convert.

Parse a user-agent string into browser/OS/device/bot. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/devutils/useragent/parse.

Match a plain-language task to ranked agent tools/services. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/discovery/match.

Field-level change events computed between held EMA snapshot generations: per medicine when an identity is given ({ema_product_number}, or a resolved {name} / {inn}), feed-wide (all held product numbers, capped at 100 events per call, truncation flagged) when only {since} is given. Event types: added, status_changed, revision_advanced, procedure_updated, withdrawn_or_suspended_transition (a labelled subcase of status_changed, emitted additionally), field_changed — computed only from held diffs and source stamps, never inferred. since is a generation id or a UTC timestamp; a since before the first held generation is clamped to it and the clamp is stated in the payload; with no since, the window is the latest consecutive pair only. An unchanged medicine in the window delivers an explicit empty events list with covered:true — a delivered answer, not an error. Every payload carries the EMA acknowledgement + official-text-prevails lines. Free pre-check at POST /toll/ema/changes/preflight (tool ema_changes_preflight). Price: $0.01 per call (RULED). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/ema/changes.

FREE pre-check twin for ema_changes: validation + identity resolution + coverage + toll fingerprint, with no change events. Accepts the same inputs as ema_changes (an identity and/or {since}; feed-wide when only {since} is given). The toll quoted is $0.01 RULED (10000 USDC units / 68000 lamports). You only pay for delivered answers. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/ema/changes/preflight.

One EMA centrally authorised medicine at the latest held generation: every DESIGN.md §2 served field verbatim (name, INN, active substance, therapeutic area (MeSH), ATC code, pharmacotherapeutic group, EMA product number, marketing authorisation holder, opinion adopted date, marketing authorisation issued date, EC decision date, revision number, medicine_status, opinion_status, latest procedure affecting product information and its date, first_published_date, last_updated_date), the generation's source UTC stamp, and the EMA acknowledgement + official-text-prevails lines carried in every payload. Facts only, never advice: no dosage, therapeutic claim, patient-availability judgement, or annex (SmPC / leaflet) text exists in this service; barred shapes are refused free. Structured input only: one identity — {ema_product_number}, {name} (exact, case-insensitive), or {inn} (exact, case-insensitive). Ambiguous identities are refused free with the candidate product numbers listed. Free pre-check at POST /toll/ema/record/preflight (tool ema_record_preflight). Price: $0.01 per call (RULED). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/ema/record.

FREE pre-check twin for ema_record: validation + identity resolution + coverage + toll fingerprint, with no record fields. Servable answers state the deliverable shape and freshness class; ambiguous identities list the candidate EMA product numbers free. The toll quoted is $0.01 RULED (10000 USDC units / 68000 lamports). You only pay for delivered answers. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/ema/record/preflight.

Calculate CO2e for one activity from a published factor. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/emissions/calculate.

Calculate CO2e for up to 100 activities in one call. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/emissions/calculate/batch.

Fetch an ETF's full distribution history. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/etf/distributions/{ticker}.

Simulate an income portfolio and its distribution flywheel. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/etf/distributions/simulate.

Classify an Ethereum address: EOA vs contract, proxy, token. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/evm/address-verdict.

Decoded ERC-20 transfer history for an Ethereum address. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/evm/transfers.

Decode an Ethereum transaction: function, args, amounts, ENS. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/evm/tx-decode.

FREE fact bank catalog. Counts and labels only: stream labels, entity and fact counts, field names, op list and RULED prices, store freshness. No fact values. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/facts/catalog.

Takes no parameters.

FREE fact bank health. Counts only: snapshot_loaded, fact/entity totals, stream labels, store freshness and store_stale flag. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/facts/health.

Takes no parameters.

Fact bank STATUS lookup, $0.01 per call (x402), price RULED. Latest-per-status_field current state for one entity, served verbatim with per-fact provenance. Call fact_bank_status_preflight first to check coverage for free. — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/facts/status.

FREE preflight for fact_bank_status. Counts only: existence, coverage counts, per-field history depth, freshness, servable/reason_class, and the $0.01 RULED toll quote. No fact values are returned. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/facts/status/preflight.

Fact bank TENDENCY, $0.02 per call (x402), price RULED. Computed direction over one (entity, status_field) history with at least 3 facts; the verbatim steps and any rank map are shipped so the computation is checkable. Nominal, period-parameterised and structured fields are refused as not_computable. Call fact_bank_tendency_preflight first to check eligibility for free. — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/facts/tendency.

FREE preflight for fact_bank_tendency. Counts only: eligibility, history depth, distinct-value count, freshness, servable/reason_class, and the $0.02 RULED toll quote. No fact values are returned. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: POST https://exchangerebel.com/toll/facts/tendency/preflight.

Solana landing recipe: one call that fuses the fee oracle's /estimate and /optimize — send an unsigned transaction, get the simulated compute-unit limit, priority-fee tiers (economy=p50, balanced=p75, fast=p95) with the chosen tier marked, the expected total fee, the ready-to-sign rewritten transaction, and a precomputed 3-rung escalation ladder. Optional fee_cap_lamports: if the chosen tier exceeds it, the answer flags cap_exceeded and returns no rewritten transaction. Paid: $0.01 flat per call via x402. Free pre-check at POST /toll/fees/recipe/preflight (same JSON body) validates structurally and states the exact price before payment; our-side failure after settlement queues an automatic refund intent (you only pay for delivered answers).

Estimate a Solana transaction's total fee cost. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/fees/estimate.

Return an unsigned, fee-optimized version of a transaction. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/fees/optimize.

Fleet KPIs for ExchangeRebel, computed live from the systems themselves: services live, paid endpoints, MCP tools, external settlements, agents served, bots connected, script calls served, and repeat customers — each with its printed definition and, where a counter is new, its counting-since date. Counts only: no customer identities, no per-agent details, ever. The same result object powers the human board page, so the machine door and the human door can never disagree. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/api/kpis.

Takes no parameters.

Fleet freshness / what changed across ExchangeRebel since a timestamp: per-service freshness metadata only (as_of stamps and whether each dataset-grade service's data is newer than `since`), each service's changes-op pointer (supported, paid, price, basis, endpoint) mirrored from its own free health envelope, and whitelisted already-free freshness facts. Change COUNTS are returned only for the free Ideas Commons event log; paid services' change counts are part of their paid changes ops and are never republished here. Never returns record contents or paid payloads. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/api/freshness.

Fetch funding rates across three perp venues. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/funding/funding/{symbol}.

Fetch the liquidation heatmap for a symbol. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/funding/liquidations/{symbol}.

Same-story headline clusters over a GDELT query pool. Deterministic headline clustering COMPUTED by this service over GDELT headline metadata (title/domain/url/timestamps only; article text is never read): overlap coefficient over normalized headline token sets, threshold 0.40 with at least 3 shared tokens, single-linkage. Not a GDELT-reported grouping. Singletons are counted, not returned. Call gdelt_news_clusters_preflight first to check story counts for free. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/news/clusters.

FREE preflight for gdelt_news_clusters. Counts only: articles_in_window, multi_outlet_story_count, singleton_count, servable/reason_class, and the $0.01 toll quote. No cluster membership or representatives are returned. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/news/clusters/preflight.

Crypto-vertical GDELT news feed. Deterministic whole-token matching over headline text (title/domain/url only; article text is never read). Tags are COMPUTED by this service, not reported by GDELT. Each article carries computed_tags {assets, topics} (taxonomy crypto-v1) and crypto_native_source. Call gdelt_news_crypto_preflight first to check coverage for free. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/news/crypto.

FREE preflight for gdelt_news_crypto. Counts only: articles_in_window, crypto_matched_count, per_asset_counts, per_topic_counts, servable/reason_class, and the $0.01 toll quote. No titles, URLs, or tag assignments are returned. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/news/crypto/preflight.

FREE preflight for the held gdelt enriched search. Counts + snapshot state only: articles_in_window, gkg_snapshot_present, gkg_snapshot_as_of, gkg_coverage_pct, servable/reason_class, and the $0.01 toll quote. No GKG field values are returned. Until the GKG ingest is loaded it honestly reports servable:false, reason_class gkg_snapshot_absent; the enriched op itself is held and is not purchasable on any surface. — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/news/enriched/preflight.

OpenAI-compatible chat completion over the open-weight GPT-OSS 120B model: openai/gpt-oss-120b (GPT-OSS family, Apache 2.0). Paid: $0.01 flat per call via x402. Limits: estimated input <= 2000 tokens (estimate: chars/4 + 4 per message), max_tokens <= 500, temperature 0..2, NO streaming at v1. Free pre-check at POST /toll/inference/chat/preflight (same JSON body) validates and states the exact price before payment; upstream failure after settlement queues an automatic refund (you only pay for delivered answers). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/inference/chat.

Search remote jobs across three public boards. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/jobs/search.

Congress bills (Congress.gov, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/bills.

Population data (US Census, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/census/population.

US CPI series (BLS, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/cpi.

Federal funds rate (FRED, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/fed-rate.

Takes no parameters.

US payrolls series (BLS, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/payrolls.

US unemployment series (BLS, public domain). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/macro/unemployment.

Per-NDC per-unit NADAC values at every held snapshot generation, with latest-vs-previous and latest-vs-12-month-anchor deltas. Input {ndc} or {ndcs: [max 25]}; uncovered batch members are marked covered:false. Free pre-check at POST /toll/nadac/changes/preflight. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/nadac/changes.

Dispersion across all latest-generation presentations sharing the input NDC's exact ndc_description: presentations, stats {count,min,max,median,mean}, and brand-vs-generic medians and gap with honest nulls when a side is absent. Free pre-check at POST /toll/nadac/dispersion/preflight. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/nadac/dispersion.

Per-NDC NADAC fact at the latest held generation: verbatim published fields (ndc_description, nadac_per_unit, pricing_unit, effective_date, classification, corresponding-generic pair), the computed corresponding-generic gap, and long-horizon changes (~1 week / ~1 month / ~6 months / 12 months, honest nulls). NADAC is a national average pharmacy acquisition benchmark published by CMS — not a consumer figure; every response carries the label sentence. Structured input only. Free pre-check at POST /toll/nadac/fact/preflight. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/nadac/fact.

Search global news coverage (GDELT). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/news/search.

Coverage timeline for a query (GDELT). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/news/timeline.

Trending stories (GDELT). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/news/trending.

ERCOT daily battery charge/discharge windows. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/power/flags/battery.

ERCOT hub-spread congestion spikes, ranked. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/power/flags/congestion.

ERCOT DA vs RT divergence flags for one hub. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/power/flags/dart.

ERCOT negative-price windows: 24h/7d counts. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/power/flags/negative.

Ranked ERCOT multi-hub power-flag scan. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/power/scan.

Takes no parameters.

Batch-convert Publisher files to PDF (async). $0.05 per file, up to 100 files per batch — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/pubconvert/batch.

Takes no parameters.

Convert a Publisher file to PDF + verdict. $0.10 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/pubconvert/convert.

Takes no parameters.

Publisher file verification verdict only. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/pubconvert/verify.

Takes no parameters.

Match-state changes over watched products since an ISO8601 timestamp. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/recalls/changes-since.

Join a product identity (GTIN/UPC, model, or listing) to US CPSC + openFDA recall status: graded verdict clear | matched | probable with confidence and evidence. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/recalls/product-check.

Fetch one full normalized recall record by its id. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/recalls/recall/{id}.

Search FDA, CPSC, and NHTSA recall records in one call. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/recalls/search.

List NHTSA recall campaigns for one vehicle. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/recalls/vehicle.

Register a product identity into the recall-join watched set. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/recalls/watch.

Render + read/extract bundle of one public web page, self-rendered by our own headless Chromium: body {url, op?: bundle|full-page|read, width?, height?, format?: markdown|text, max_chars?} -> PNG inline (base64 in JSON, image legs) plus extracted text/markdown from the SAME render session, with render metadata and extraction counts. Bundle leg $0.02, full-page leg $0.05, read leg (extraction only) $0.01 — leg selected by body field op; the 402 challenge carries the selected leg's price. Full SSRF fence, refusals free before payment. Free pre-check at POST /toll/render/preflight (shape + full fence incl. resolve-then-pin, no render). $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/render.

Call Solana JSON-RPC (cached, failover proxy). $0.01 per call via MCP (each tool call is toll-gated individually; the direct HTTP gateway at /toll/rpc is billed as $0.01 per 1,000 requests = $0.00001/request) — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/rpc/. Generic Solana JSON-RPC passthrough (cached, failover proxy): pass the RPC method and its params array. Intended for standard Solana read methods (getBalance, getBlock, getTransaction, getSignaturesForAddress, getAccountInfo, ...). One MCP tool call is one RPC call.

Single-ticker snapshot (delayed quote). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/screener/quote/{ticker}.

Screen the S&P 500 with Finviz-style filters. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/screener/screen.

Screenshot of one public web page, self-rendered by our own headless Chromium: body {url, tier?: viewport|full-page, width?, height?} -> PNG inline (base64 in JSON) + render metadata. Viewport tier $0.03, full-page tier $0.02 (tier selected in the body; the 402 challenge carries the selected tier's price). Full SSRF fence, refusals free before payment. Free pre-check at POST /toll/screenshot/preflight (shape + full fence incl. resolve-then-pin, no render). $0.03 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/screenshot.

Poll the alerts view of a registered watch: the filings matching the watch's own rules that this service first saw since the cursor — new filings, /A amendments grouped to their base form, and deletion flags from weekly index reconciliation only. Paid via x402: $0.01 — RULED (10000 USDC units / 68000 SOL lamports) per delivered view — one poll delivers ALL matching events since the cursor, up to 200 per poll; it is NOT charged per event. Always call the free preflight first (same watch_id + cursor): GET /toll/secalerts/alerts/preflight returns the pending-event count only (no event content) — pending_count 0 is the complete free answer, so you never pay for an empty view. A settled poll that still delivers zero writes exactly one refund intent (net charge zero, cursor unmoved). If you lose a response, re-poll the same cursor within 7 days: the delivery record is re-served verbatim and free (redelivered: true). first_seen_at is ExchangeRebel's own detection timestamp — the moment this service first recorded the filing in its append-only store. The SEC publishes no availability timestamp, so no seller's first-seen time can be anything other than their own observation. For a filer's first-ever touch, the store is seeded from the filer's returned history and first_seen_at is the seed time (records carry seeded:true). Deletion flags are issued only for removals confirmed by the weekly full-index reconciliation: a deletion_flag event is produced only from a record whose provenance marks it weekly-index-reconciliation-sourced. Removals noticed when a single filer's submissions record is re-read are never issued as deletion alerts by this service. Until the weekly reconciliation is wired to the live store, deletion flags do not fire in production. Honest crossover: polls cost $0.01 (ruled price) per delivered alerts view. A caller whose watches deliver about 500 events a month is spending about $5.00 a month here — the price of Datamule's $5/month subscription — and continu

Register a watch for SEC EDGAR filing alerts: a set of CIKs and/or tickers plus an optional form-type set. Paid via x402: $0.005 — RULED (5000 USDC units / 33500 SOL lamports). The $0.005 registration price is RULED (Mauricio, 2026-10-20) — the evaluation ladder figure, ruled as proposed. Always call the free preflight first (same body): POST /toll/secalerts/watch/preflight performs all validation, resolves tickers to CIKs, and returns the exact price ($0.005 — RULED) before any payment; an unresolvable ticker is a free unknown_ticker refusal, never a guess. Registration returns a watch_id (a bearer credential — possession IS read access to that watch's alerts view; there is no separate secret, no rotation, and no recovery for a lost watch_id) and its initial cursor: the watch reports only filings first seen after it was created. first_seen_at is ExchangeRebel's own detection timestamp — the moment this service first recorded the filing in its append-only store. The SEC publishes no availability timestamp, so no seller's first-seen time can be anything other than their own observation. For a filer's first-ever touch, the store is seeded from the filer's returned history and first_seen_at is the seed time (records carry seeded:true). You only pay for delivered answers — a registration that fails after settlement writes exactly one refund intent and creates no watch. Price: $0.005 per call (per watch registration). — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/secalerts/watch.

Fetch SEC company fundamentals for a ticker. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/sec/fundamentals/{ticker}.

SEC filing changes since a timestamp. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/secfilings/changes.

SEC EDGAR filing status for a filer. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/secfilings/status.

Fetch FINRA short interest for a ticker. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/short/short/{ticker}.

Check a proposed agent spend against the agent's budget policy. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/spend/check.

Normalised indicator series for 30 countries. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/stats/indicator.

Aggregate HS trade flows (Comext EU; StatCan CA-US). $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/stats/trade.

Allocate a Telegram bot for one month. $0.50 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/telegram/provision. STATE-CHANGING: one settled call allocates one Telegram bot for one month. Payment is settle-once (replay-protected): do NOT retry blindly after a timeout — the call result returns the allocation, which is your receipt.

Takes no parameters.

0-100 token safety score with explainable factors. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/tokens/score/{mint}.

Token mint info: name, symbol, decimals, supply, authorities. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/tokens/token/{mint}.

Score a comment for toxicity (Perspective-compatible). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/toxicity/analyze.

Score up to 100 comments for toxicity in one call. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/toxicity/analyze/batch.

Fetch full case detail for a trademark serial. $0.10 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/trademarks/case/{serialNumber}.

Search US trademark records by wordmark text. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/trademarks/search. (The HTTP endpoint also accepts a POST form; this tool is the canonical search.)

Register a 30-day trademark watch (daily checks). $0.50 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/trademarks/watch. STATE-CHANGING: one settled call registers one 30-day trademark watch; the returned watch id is your receipt. Payment is settle-once (replay-protected): do NOT retry blindly after a timeout — a duplicate call creates a duplicate watch.

Fetch changes detected for a trademark watch. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/trademarks/watch/{id}/changes.

Transcribe audio with Groq Whisper (whisper-large-v3). $0.005 per minute of audio, per-second prorated — NOT a flat per-call price: billed seconds = ceil(parsed duration to whole seconds); charge = ceil(seconds x 5000 / 60) USDC units (SOL rail: ceil(seconds x 34000 / 60) lamports), quoted exactly by the free preflight (POST /toll/transcribe/preflight) before payment. Accepts WAV/PCM, MP3, Ogg Opus/Vorbis, FLAC, MP4/M4A audio-only (max 25 MB, max 600 s); WebM refused at v1. The MCP adapter converts the tool arguments into the multipart HTTP shape (file part + optional language/model fields). You only pay for delivered answers — any failure after settlement queues an automatic refund. — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/transcribe.

Takes no parameters.

Estimate TRON energy/bandwidth needed for a USDT transfer. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/tron/estimate.

Pre-sign verdict for an unsigned Solana transaction. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/txcheck/check.

Active weather alerts (US points; NOAA). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/weather/alerts.

Current conditions (metric + imperial). Source: Open-Meteo. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/weather/current.

Daily forecast, 1-16 days. Source: Open-Meteo. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/weather/forecast.

Answer a query from Wikipedia content. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/wiki/answer.

Articles linked from the resolved Wikipedia page. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/wiki/related.

Ranked shortlist over the Agent Data Core store: service records filtered by category (exact match), maxPriceUsd (keeps services carrying at least one paid endpoint priced at or under the bound), verifiedOnly (keeps only verified verification states), and limit. Returns the matching full service records in deterministic id order. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/datacore/shortlist.

Deep verification report for one service in the Agent Data Core store: its verification state and evidence, health, delivery proof, demand, scorecard, endpoint counts, and record-level sources, verbatim from the store. An unknown service id is answered free, before payment. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/datacore/report.

FREE snapshot descriptor for the Agent Data Core store: returns only the snapshot descriptor — generated_at, service count, and byte size of the exported snapshot document. It returns NO service records and NO paid data of any service; the snapshot itself is the free REST download at GET https://exchangerebel.com/toll/datacore/snapshot. Free — no payment required, call it directly.

Takes no parameters.

FREE catalog of the Agent Data Core pre-computed packs: for each pack, its id, name, buyer job, use-when line, proven payer category evidence, and constituent service ids. Returns no endpoint data and no pack prices. Free — no payment required, call it directly. HTTP equivalent: GET https://exchangerebel.com/toll/packs/packs.

Takes no parameters.

Compose one pre-computed Agent Data Core pack from the Layer 0 store: the pack's authored guidance plus, for every constituent, its pack-authored use-when line, verification state, and verbatim endpoints, with totals computed at compose time. An unknown pack id is answered free, before payment. Per-pack price (RULED): chain-reads $0.01 per call; web-evidence, company-diligence, market-intel and safety-preflight $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/packs/{pack_id}.

Free: the arena-eligible targets from the Layer 0 store — services with a paid endpoint that carries a price — as descriptors (service id, name, category, verification state, endpoint method/path/summary). Carries no prices. Free — no payment required. HTTP equivalent: GET /eligible.

Takes no parameters.

Free quote for one verification run: the fixed 3-call plan for the target plus the constituent test-call cost summed from the target endpoint's own listed prices. An unknown or ineligible target is answered free, before payment. HTTP equivalent: POST /run/quote.

Start one paid-and-judged verification run: the arena funds, executes the fixed 3-call suite itself, judges it, and builds the Layer 0 write-back events. An unknown or ineligible target is answered free, before payment. Paid via x402 on Solana (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalents: POST /run (standard), POST /run/full-service, POST /run/retest. Prices (RULED): standard single-endpoint run $25; full-service run $50; re-test run $10. What the standard $25 includes: one arena-executed verification run of a single endpoint — the fixed 3-call suite (1 free pre-check call judged on challenge quality + 2 settled paid calls with per-run varied inputs, executed by the arena, never by the seller), judging on settled / delivered / payload_valid / challenge_ok with latency recorded, one verdict (pass / partial / fail) with per-dimension summaries, Layer 0 write-back events (verification evidence, delivery-proof delta, and a state recommendation on pass only), leaderboard eligibility from the same evidence, and the run record retained as digests + call records (payloads never stored). The run price is the full price of the run — constituent test-call costs are the arena's cost, not an additional charge. The $50 full-service run includes the same suite executed for EVERY paid endpoint of one service, a verdict per endpoint, a service-level dimension summary, and write-back per endpoint. The $10 re-test includes an identical suite, judging and write-back for an endpoint the same seller has already run; a re-test inside the 24h reputation window is delivered in full but flagged reputation_counted: false.

Free: read one run's status and result by run_id — lifecycle state, verdict, per-call records (digests only, never payloads), and the write-back events when built. An unknown run id is answered free. HTTP equivalent: GET /run?id=.