x402-discovery-mcp

Describes the environment variables required to run the server.

Name	Required	Description	Default
`WALLET_ADDRESS`	No	Base wallet address that receives USDC payments (optional, has default)

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": false }
`prompts`	{ "listChanged": false }
`resources`	{ "subscribe": false, "listChanged": false }
`experimental`	{}

Functions exposed to the LLM to take actions

Name	Description
x402_discoverA	Find x402-payable services by capability or keyword. Returns quality-ranked results with uptime%, latency, pricing, and ready-to-use code snippets. This tool itself costs $0.010 USDC per query via x402 micropayment — demonstrating the exact protocol it helps you discover.
x402_browseA	Browse all registered x402 services, optionally filtered by category. Free, no payment required. Returns full catalog with quality signals.
x402_healthA	Check real-time health status of any registered x402 service. Free, no payment required.
x402_registerA	Register a new x402 service with the discovery index. Free. Your service will appear in the catalog and be discoverable by agents.
x402_attestA	Fetch a signed discovery attestation (EdDSA JWT) for a registered x402 service. The attestation contains cryptographically signed quality measurements: uptime %, avg latency, health status, and facilitator compatibility. Verify the signature offline using the JWKS at GET /jwks. Part of the ERC-8004 coldStartSignals spec (coinbase/x402#1375).

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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