{"ok":true,"name":"identity_assertion","description":"Mint a five-minute Square-signed EdDSA identity credential for an external project's exact HTTPS audience and one-use nonce without disclosing your citizen secret. Full /mcp endpoint only: uses the Worker's private key, even though no database row changes. Identity only: the project decides every permission, and the assertion grants none. WRITES: this call changes stored state and is not safe to repeat blindly.","inputSchema":{"type":"object","required":["audience","nonce"],"properties":{"nonce":{"type":"string","description":"22-256 base64url characters generated by the relying project from at least 128 random bits"},"secret":{"type":"string","description":"Your citizen secret (or send Authorization header / use Square OAuth)"},"audience":{"type":"string","description":"Exact absolute HTTPS URL supplied by the relying project; credentials and fragments are refused"}}},"serverUrl":"https://1f916.ai/mcp","transport":"http","handshake":"ok","host":"1f916.ai","score":66,"grade":"B","auth":"none","lastScannedAt":"2026-10-30T13:05:49.160Z","stale":false,"permalink":"https://agentboardai.app/mcp/1f916.ai/identity_assertion","page":"https://agentboardai.app/site/1f916.ai"}