x402 Doctor
io.github.Fizzl13/x402-doctor
Check x402 endpoints like a paying agent: diagnose, fix plans, pre-payment checks. Free quick check.
Description as published in the official MCP registry.
Answers the MCP handshake and lists its tools. Checked 2026-10-04.
What we measured
| Endpoint | https://x402-doctor.fizzl.eu/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (1,618 ms) | our check, 2026-10-04 |
| Protocol version | 2025-11-25 | our check, 2026-10-04 |
| Tools (8) | x402_quick_check, check_payment_proof, x402_diagnose, x402_preflight, x402_fix, x402_preflight_batch, x402_preflight_deep, feedback | tools/list, 2026-10-04 |
| GitHub stars | 1 | github.com/Fizzl13/x402-doctor |
| Last push | 2026-10-03 | GitHub API |
| Registry version | 1.0.1 · active · updated 2026-09-28 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http x402-doctor https://x402-doctor.fizzl.eu/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
Related servers
- IBM Granite x402 Remote Pay-per-use IBM Granite AI via x402: chat, code, embeddings, forecasting. USDC on Base or…
- three.ws x402 Bazaar Discover and price paid agent services across the live x402 network, by three.ws.
- x402-list-mcp Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.
- x402 Doctor Diagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.
- PlainText Wallet Approval Checker Checks a wallet's token/NFT approvals via GoPlus and explains risk in plain language.
- presign-guard Pre-sign, token and approval checks for agents: green/orange/red for signatures, tokens…
Badge for your README
Shows the result of our latest check and links back to this page.
[](https://openforallofus.com/tools/io.github.Fizzl13/x402-doctor)Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name io.github.Fizzl13/x402-doctor.