402MCP.org — HTTP 402 & Agent Payment Registry
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
Description as published in the official MCP registry.
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What we measured
| Endpoint | https://402mcp.org/api/v1/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (1,902 ms) | our check, 2026-10-16 |
| Protocol version | 2025-11-25 | our check, 2026-10-16 |
| Tools (7) | decode_402_challenge, recommend_payment_rail, search_402_solutions, get_solution, get_scheme_reference, probe_402_support, get_best_payment_solution | tools/list, 2026-10-16 |
| Registry version | 1.1.0 · active · updated 2026-10-16 | registry |
| Package | npm: @402mcp/mcp | registry |
Packages
npm: @402mcp/mcp
Exists · metadata read 2026-10-16
Latest version: 1.1.0. Last published: 2026-10-16.
Deprecated: no.
Weekly downloads: unavailable · read 2026-10-16. downloads include bots and CI.
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http registry https://402mcp.org/api/v1/mcpnpx -y @402mcp/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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[](https://openforallofus.com/tools/org.402mcp/registry)<a href="https://openforallofus.com/tools/org.402mcp/registry"><img src="https://openforallofus.com/badge/org.402mcp/registry.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name org.402mcp/registry.