{"slug":"x402-doctor-fizzl-eu-api-v1-diagnose-3b1474","title":"Why is my x402 endpoint broken?","host":"x402-doctor.fizzl.eu","method":"GET","resource":"https://x402-doctor.fizzl.eu/api/v1/diagnose","category":"market","description":"Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail: checks the 402 challenge, accepts[] (network, payTo, amount, asset), resource URL, Solana settlement readiness, which wallets and agents can pay, Bazaar/OpenAPI discovery and the browser p","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":618,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"method":"GET","url":"https://ichimoku-signal.fizzl.eu/signal/BTC-USDT"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"method":{"description":"HTTP method of the endpoint. Default: try GET, then POST.","enum":["GET","POST"],"type":"string"},"url":{"description":"The x402 endpoint to diagnose (public http(s) URL).","type":"string"}},"required":["url"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"challenge":{"type":["object","null"]},"checks":{"items":{"properties":{"group":{"enum":["challenge","accepts","resource","settlement","wallets","discovery","browser"],"type":"string"},"hint":{"type":"string"},"id":{"type":"string"},"message":{"type":"string"},"status":{"enum":["pass","warn","fail","info","skip"],"type":"string"}},"required":["id","status","message"],"type":"object"},"type":"array"},"method":{"enum":["GET","POST",null],"type":["string","null"]},"overall":{"enum":["pass","warn","fail"],"type":"string"},"url":{"type":"string"},"wallets":{"description":"Which wallets can pay: per wallet, the networks where payment works (yes) and where it fails, with the reason (no).","items":{"properties":{"agent":{"type":"boolean"},"no":{"items":{"properties":{"network":{"type":"string"},"reason":{"type":"string"}},"type":"object"},"type":"array"},"wallet":{"type":"string"},"yes":{"items":{"type":"string"},"type":"array"}},"type":"object"},"type":"array"}},"required":["url","overall","checks"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-28","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":618,"error":null}],"description_full":"Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail: checks the 402 challenge, accepts[] (network, payTo, amount, asset), resource URL, Solana settlement readiness, which wallets and agents can pay, Bazaar/OpenAPI discovery and the browser paywall. Returns every check with a fix hint. Read-only: never pays.","last_updated":"2026-09-28T07:00:18.789Z","schemes":["exact"]}