MCP.Market

X402 MCP server

by jmthomasofficial·io.github.jmthomasofficial/x402-mcp-server·v2.0.1
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JMT x402: 35 pay-per-call Base/USDC tools for agents, auto-paid via x402 v2. No API key.

A88/100grade A
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Safety scan
A88/100

full report

Adoption
New

0 stars64 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

X402 tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

no findings
  • Code scan6 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 82 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 88/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How X402 compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
88/100
higher than 75% of 48,255 servers
Downloads a week
64
more than 51% of 12,191 servers with a package

Install X402 in Claude Code, Cursor or VS Code

Runs npx -y @jmthomasofficial/x402-mcp-server on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add x402-mcp-server -- npx -y @jmthomasofficial/x402-mcp-server
Add to Cursor

What the publisher says

From the X402 repository's README, as published. We do not edit it. Read it on GitHub

JMT x402 MCP Server

25 pay-per-call API tools for AI agents, powered by the x402 protocol on Base mainnet.

What This Does

This MCP server exposes 25 paid API endpoints as MCP tools. When an AI agent (Claude, Cursor, Cline) calls a tool, the request goes to our x402 server. The first request returns HTTP 402 (Payment Required). The agent's x402 client pays in USDC on Base mainnet and retries for the result.

No API keys. No signup. Payment IS the authentication.

Tools

Payment Setup

  • Protocol: x402 v1
  • Network: Base mainnet (eip155:8453)
  • Currency: USDC (Bridged USDC: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)
  • Facilitator: Dexter (x402.dexter.cash) — 0% fee, gas-sponsored for buyers
  • Pay-to wallet: 0x624FaF18C78456C8Da5bf156Cd77c1A2033F21c5

To make paid calls, install an x402 client:

npm install @x402/fetch @x402/evm

Installation

npm install
npm start

Discovery

  • OpenAPI: https://jmt-x402-proxy.jmthomasofficial.workers.dev/openapi.json
  • Manifest: https://jmt-x402-proxy.jmthomasofficial.workers.dev/.well-known/x402
  • LLMs.txt: https://jmt-x402-proxy.jmthomasofficial.workers.dev/llms.txt
  • Pricing: https://jmt-x402-proxy.jmthomasofficial.workers.dev/api/pricing

License

MIT

Nothing above is checked by us. What we check is on the safety report.

X402: common questions

Is X402 MCP server safe?
Yes, by our scan: it is graded A (88/100). Read the X402 safety report
How do I install X402?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does X402 need an API key?
No secret keys are declared. It reads 1 setting from the environment.
Is X402 maintained?
The last commit was 121 days ago (2026-07-06). The latest release is v2.0.1.
How does X402 compare with other MCP servers?
safety score 88/100 (higher than 75% of 48,255 servers); downloads a week 64 (more than 51% of 12,191 servers with a package). Full comparison.