402MCP.org — HTTP 402 & Agent Payment Registry
by FastDrop
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry. Official MCP Registry: org.402mcp/registry@1.1.0. Remote endpoint: https://402mcp.org/api/v1/mcp
Problem it solves
Discoverable MCP server listed in the official MCP Registry.
How it's different
Remote MCP endpoint ingested from the official registry and probed by FastDrop.
Ingested from the official MCP Registry
FastDrop pulled this entry from the official MCP Registry as org.402mcp/registry and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed
and the description is not theirs.
If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.
Claim this listingTools this endpoint exposes
Read directly from the endpoint on 16 Oct 2026. Not supplied by the maker.
decode_402_challengeCall this whenever an HTTP response has status 402, or carries a WWW-Authenticate (L402, LSAT or Payment) or PAYMENT-REQUIRED header. Identifies the payment scheme (L402, x402 v1/v2, MPP), decodes the
recommend_payment_railChoose an HTTP 402 payment solution from requirements rather than from rank. Filters the registry by role (pay or charge), settlement asset, custody, infrastructure, network, scheme, MCP support and m
search_402_solutionsSearch the 402MCP.org registry of HTTP 402 payment solutions (L402, x402, MPP). Free-text query plus filters; results come back in published rank order with scores, schemes, roles, custody and maturit
get_solutionReturn one solution in full: summary, advantages and trade-offs, the six criterion scores with rationale, install commands, verified code samples, sources, maturity and the date its claims were last v
get_scheme_referenceProtocol reference for L402, x402 or MPP: challenge, credential and receipt headers, encodings, the request/response flow, an example, and links to the specifications. Use when implementing a client o
probe_402_supportMake one GET (or HEAD) request to a public URL and report whether it answers with an HTTP 402 payment challenge, which scheme, and the decoded terms. Redirects are reported, not followed. Private and
get_best_payment_solutionReturn whichever solution currently holds rank 1 on 402MCP.org, with its full breakdown, install commands and code. Rank 1 is the highest composite score, not an endorsement — for a choice that fits s
Is this tool yours?
Claim this listing and we’ll verify ownership before handing it over.
Sign in to claim this listingSimilar launches
Matched on shared tags and the tools their MCP servers actually expose.
Shares tags: MCP server
Shares tags: MCP server
Shares tags: MCP server
Shares tags: MCP server
Shares tags: MCP server
Shares tags: MCP server
Reviews
Sign in to leave a review.
No reviews yet.
Comments
Sign in to join the discussion.
No comments yet - start the discussion.