io.github.danielarif26Published by GitHub account danielarif26v3.1.0Updated Oct 24, 2026
Ten x402-paid tools for JSON, YAML, cron, diff, text, DNS, WHOIS, GitHub, crypto, and email.
Remote MCP server offering nine small data utilities — JSON repair, YAML conversion, cron, diff, text extraction, DNS, WHOIS, GitHub stats and email checks — at
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.danielarif26%2Fpenniless-data-utilities/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"penniless-data-utilities": {
"type": "http",
"url": "https://penniless-json-repair.sjaman.workers.dev/mcp"
}
}
}Nine deterministic data and lookup tools for AI agents, paid per call in USDC. REST advertises both native MPP and x402; MCP uses x402 v2. No accounts, no API keys, no rate-limit tiers. Every tool is pure computation or a keyless public lookup — none of them call another AI model, so results are reproducible.
/health, /openapi.json, /llms.txt, /.well-known/x402$0.001 USDC per call. REST advertises native MPP plus x402 v2 (eip155:8453, scheme exact); MCP uses x402 v2.
Base x402 settlements are verified by the free-tier PayAI facilitator. Native MPP is negotiated by mppx. Recipient (payTo): 0x3D98800c64C345950E1eAaa076D88C12d1BF5F37.
Any MCP client that speaks streamable HTTP can connect directly:
The transport is stateless — no session id is issued or required, and every
request is independent. initialize and tools/list are free. An unpaid
tools/call returns an x402 payment-required payload in result.content[0].text
(and result.structuredContent); attach the signed payment as
params._meta["x402/payment"] and repeat the call.
If you use an x402-aware MCP client, @x402/mcp handles that exchange for you.
POST /diagnose is free: it classifies what is wrong with a malformed JSON
payload without returning the repaired output, so a caller can check whether
paying is worthwhile before paying.
Any x402 v2 client works. With the reference TypeScript client and a viem account:
wrapFetchWithPayment handles the 402 round-trip: it receives the requirement,
signs the USDC authorization, retries, and only returns a 200 once the
facilitator has settled.
Environment (set in wrangler.toml): X402_NETWORK, X402_FACILITATOR,
X402_PRICE, X402_PAY_TO. Production also has an encrypted Cloudflare secret
MPP_SECRET_KEY used only to authenticate MPP challenges. Wallet private keys are
never deployed to the Worker.
GitHub: @danielarif26
Source: README.md at commit 3137a15
Penniless JSON Repair
Repairs malformed LLM JSON: strips Markdown fences and prose wrappers, fixes trailing commas, converts Python literals (True/False/None) and single/unquoted keys, removes comments, recovers balanced JSON from truncated output. Body {input} -> {ok, repaired, applied}. Costs $0.001 USDC on Base per call.
inputrequiredPenniless YAML to JSON
Converts a YAML subset (block maps, sequences, nested indentation, scalars, comments) into JSON with no runtime dependency. Body {input} -> {ok, value, warnings}. Costs $0.001 USDC on Base per call.
inputrequiredPenniless Cron Next Run
Computes the next UTC fire time for a 5-field cron expression (supports steps, ranges, lists, and month/weekday names). Body {expr, after?} -> {ok, next, epochMs}. Costs $0.001 USDC on Base per call.
exprrequiredafterPenniless Text Diff
Produces a unified diff plus added/removed counts between two texts (LCS line diff, configurable context lines). Body {old, new, context?} -> {ok, identical, added, removed, hunks, unified}. Costs $0.001 USDC on Base per call.
newrequiredoldrequiredcontextPenniless Text Extract
Extracts clean text, title, headings, links, URLs, and emails from HTML or plain text. Body {input, numbers?, codeBlocks?} -> {ok, source, title, headings, links, urls, emails, text}. Costs $0.001 USDC on Base per call.
inputrequirednumberscodeBlocksPenniless WHOIS Lookup
Structured WHOIS via RDAP for any domain: registrar, IANA id, statuses, expiry/registration dates, nameservers, DNSSEC. Body {domain} -> {ok, found, domain, registrar, status[], events{}, nameservers[], dnssec}. Costs $0.001 USDC on Base per call.
domainrequiredPenniless DNS Lookup
JSON DNS-over-HTTPS lookup for A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, CAA. Body {domain, type?} -> {ok, domain, type, status, answers[]}. Costs $0.001 USDC on Base per call.
typedomainrequiredPenniless GitHub Repo Stats
Popularity and metadata for any public GitHub repo: stars, forks, open issues, watchers, language, license, topics, last push. Body {repo} -> {ok, found, stars, forks, openIssues, language, license, pushedAt}. Costs $0.001 USDC on Base per call.
reporequiredPenniless Email Validate
Email deliverability check: RFC-style syntax plus live MX probe of the domain. Body {email} -> {ok, valid, formatValid, domainHasMx, mx[]}. Costs $0.001 USDC on Base per call.
emailrequired90% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Declare a license in the repository or the registry entry.
{ "mcpServers": { "penniless-data-utilities": { "type": "http", "url": "https://penniless-json-repair.sjaman.workers.dev/mcp" } }}import { x402Client } from "@x402/core/client";import { registerExactEvmScheme } from "@x402/evm/exact/client";import { wrapFetchWithPayment } from "@x402/fetch";import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client();registerExactEvmScheme(client, { signer: privateKeyToAccount(key), networks: ["eip155:8453"] });const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://penniless-json-repair.sjaman.workers.dev/repair/json", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ input: "{foo: 'bar',}" }),});// -> { ok: true, repaired: { foo: "bar" }, applied: ["unquoted-keys","single-quotes","trailing-commas"] }npm installnpm test # 133 tests, runs fully offline (facilitator + upstream are injected)npx wrangler devnpx wrangler deploy