x402 Toolbox

io.github.mayer-codePublished by GitHub account mayer-codev1.0.0Updated Oct 24, 2026

Free, read-only MCP subset of x402 Toolbox's cheap data endpoints, free via MCP.

VerifiedStreamable HTTPWeb executableFinanceData & Analytics

Overview

AI-generated overview

A free, read-only remote MCP server exposing x402 Toolbox data endpoints: gas prices, ETH/USD, Base blocks, USDC transfers, address enrichment and transaction/

What you can do
Read Ethereum and Base gas prices, blocks, rolling gas metrics and side-by-side gas comparisons with estimated transfer costs, plus a retry-backed ETH/USD price and a freshness-priced gas/price feed. Look up recent large USDC transfers on Base and enrich a wallet address with contract-vs-EOA status, native balance and transaction count. Verify a Base transaction hash, optionally against three independent RPC providers, and retrieve a signed attestation log. Export raw Ethereum gas history over a date range as JSON or CSV, and fetch a trust score from on-chain activity and a payment ledger. Retrieve clean Wikipedia article lead sections as tag-free JSON.
When to use it
Useful when an assistant needs quick, read-only on-chain context on Ethereum or Base — gas costs, ETH price, wallet details, USDC transfer activity or transaction confirmation — without building your own RPC integration. Also handy for pulling Wikipedia summaries or gas history exports.
Requirements
A remote streamable HTTP endpoint; no package, environment variables or headers are declared. No authentication is declared. Network access to the endpoint is required.
Before you install
Read-only data access, but the tools return third-party on-chain and Wikipedia data that should be checked before relying on it. Some tools accept a referral address parameter that directs a payment cut to that wallet. The same data is offered elsewhere as pay-per-call endpoints, so avoid accidentally routing paid calls; the MCP subset itself is described as free.

Installation

In SourceWeft

  1. Open x402 Toolbox in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

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.mayer-code%2Fx402-toolbox/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.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "x402-toolbox": {
      "type": "http",
      "url": "https://lab.paidapis.net/mcp"
    }
  }
}

Tools

14

get_market_snapshot

Aggregated market snapshot

Gas price + ETH/USD price + latest Base block in one call. Optional ?ref=<address> pays that wallet a referral cut. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/market-snapshot for production/agentic use.

Takes no parameters.

get_normalized_gas

Normalized Ethereum + Base gas data

Ethereum and Base gas price and block data, cleaned into one consistent schema per chain. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/normalized-gas for production/agentic use.

Takes no parameters.

get_gas_comparator

Cross-chain gas comparator

Real gas price on Ethereum vs Base side by side, with delta, ratio, and estimated USD cost of a standard transfer on each chain. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-comparator for production/agentic use.

Takes no parameters.

get_large_transfers

Large USDC transfer filter

Recent USDC transfers on Base above a value threshold. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/large-usdc-transfers for production/agentic use.

ParametersminUsd

enrich_address

On-chain address enrichment

Real on-chain context for a wallet address: contract vs EOA, native balance, transaction count. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/enrich-address for production/agentic use.

Parametersaddressrequired

get_gas_metrics

Derived gas price metrics

Rolling average/min/max/volatility/trend for Ethereum gas price over a window. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-metrics for production/agentic use.

ParameterswindowMinutes

get_reliable_eth_price

Reliable ETH/USD price

ETH/USD price with retry-with-backoff and last-known-good cache fallback. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/reliable-eth-price for production/agentic use.

ParameterssimulateFailureRate

get_wiki_summary

Wikipedia article summary as JSON

Wikipedia article lead section, converted from rendered HTML into clean, tag-free JSON. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/wiki-summary for production/agentic use.

Parameterstitlerequired

verify_tx

Signed on-chain transaction confirmation oracle

Checks whether a Base transaction hash has confirmed on-chain, returns a signed EIP-191 attestation. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/verify-tx for production/agentic use.

ParameterstxHashrequired

verify_tx_multi_source

Multi-source on-chain confirmation oracle

Checks a Base tx hash against 3 independent RPC providers in parallel; only signs an attestation if all agree. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/verify-tx-multi-source for production/agentic use.

ParameterstxHashrequired

get_attestation_log

Signed oracle attestation history

Persisted, doubly-signed log of past oracle attestations from this server. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/attestation-log for production/agentic use.

Parameterslimit

get_freshness_priced_data

Freshness-tiered gas/price data

Same gas + ETH/USD data, priced by requested freshness: cached (cheap) or live (guaranteed current). Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/freshness-priced-data for production/agentic use.

Parametersfreshness

get_gas_history_export

Historical gas price export

Raw Ethereum gas price samples over a date range, JSON or CSV, priced by real row count (min $0.005, max 24h range). Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-history-export for production/agentic use.

Parameterstorequiredfromrequiredformat

get_reputation

On-chain + ledger reputation score

Trust score from real on-chain activity plus our own ledger of settled payments from this address. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/reputation for production/agentic use.

Parametersaddressrequired

Version history

1
  1. v1.0.0LatestSep 16, 2026

Score

83% 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.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.