{"slug":"api-xynaptic-io-v1-fiat-usdc-rate-edf9ecfd","name":"api.xynaptic.io/v1/fiat-usdc-rate","summary":"Xynaptic Fiat-USDC Rate — best fiat↔USDC conversion rate per payment rail (Base, Polygon, Solana): Coinbase spot, spread, network fees, best-rail verdict. GET ?currency=EUR.","status":"live","indexable":true,"listed_since":"2026-10-25T17:53:33.961953Z","sources":[{"source":"x402_bazaar","external_id":"https://api.xynaptic.io/v1/fiat-usdc-rate","owner_address":"0x4ff893df9ab8603d5460fbbaee0d9b8c0fa4d5e9","seen_at":"2026-10-26T19:19:13.641121Z","removed_at":null}],"endpoints":[{"url":"https://api.xynaptic.io/v1/fiat-usdc-rate","host":"api.xynaptic.io","protocol":"x402","state":"live","last_probe_at":"2026-10-26T01:05:31.666143Z","last_ok_at":"2026-10-26T01:05:31.666143Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-xynaptic-io-f6e2607b","name":"api.xynaptic.io"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":3,"last_paid_at":"2026-10-17T10:53:44.864Z","reported_at":"2026-10-26T19:19:13.641121Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 13 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-26T14:49:59.163755Z"},"identity":{"endpoint_domains":["xynaptic.io"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}