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402MCP.org — HTTP 402 & Agent Payment Registry

Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.

Endpoint
Answering
Works in
20 of 21 clients
Tools
7
Last checked
Oct 21, 2026

Does 402MCP.org — HTTP 402 & Agent Payment Registry work in your MCP client?

Registry name org.402mcp/registry, endpoint https://402mcp.org/api/v1/mcp.

  • Claude Codeworks
  • Claude Desktopworks
  • Claude.aiworks
  • Claude API MCP connectorworks
  • ChatGPTworks
  • OpenAI Responses APIworks
  • Codexworks
  • Gemini CLIworks
  • Cursorworks
  • VS Code (GitHub Copilot)works
  • Windsurf (Devin Desktop)works
  • Zedworks
  • JetBrains AI Assistantworks
  • Junieunknownno source confirms Junie supports Streamable HTTP
  • Clineworks
  • Continueworks
  • Gooseworks
  • Lovableworks
  • Replit Agentworks
  • Bolt.newworks
  • v0works

How clients sign in

No credentials: it answered lurq's probe without any.

Tools

decode_402_challengerecommend_payment_railsearch_402_solutionsget_solutionget_scheme_referenceprobe_402_supportget_best_payment_solution

Get the setup for your client from your agent

This page is a daily snapshot. lurq's connect_check answers for the client you are wiring this server into, with the exact steps and the config to paste in that client's own format, and lurq mcp-pin tells you when the server changes. One command connects Claude Code, Cursor, VS Code and other agents:

npx lurqrun

Free to start. How connect_check works

From lurq's credential-free probe of this server's endpoint on Oct 21, 2026, and each client's own documentation. This page refreshes every 168 hours. How the probe works, and how maintainers opt out. Source repository.