{"sample":true,"free":true,"note":"Static example of the paid response shape (not live data). Drop sample=1 and pay via x402 for live data. Failed calls (4xx/5xx) are never charged.","path":"/crypto/x402-check","price_usdc":"0.002000","pay_url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/x402-check?url=https%3A%2F%2Fkr-x402-mvp.kgy5612.workers.dev%2Fcrypto%2Fping&max_usd=0.01","input_schema":{"type":"object","properties":{"url":{"type":"string","maxLength":2048,"description":"Absolute https URL of the x402 endpoint to check, with its query string (alias endpoint=; omitted = self-test on /crypto/ping)","examples":["https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"]},"max_usd":{"type":"number","minimum":0,"description":"Optional budget per call in USD; sets within_budget","examples":[0.01]},"method":{"type":"string","enum":["GET","POST"],"description":"Probe method (default GET)"}},"additionalProperties":false},"example":{"url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping","checked_at":"2026-10-30T07:30:00Z","reachable":true,"http_status":402,"latency_ms":180,"x402_version":2,"verdict":"SAFE_TO_PAY","should_pay":true,"risk_score":0,"flags":[],"reasons":["402 quote parsed: 1 option(s)","cheapest $0.001 USDC on base"],"cheapest_option":{"network":"eip155:8453","network_name":"base","scheme":"exact","price_usd":0.001,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_label":"USDC","is_usdc":true,"payTo":"0xe4be4d0bd82d8e68203deff81f79ede0529f2617","max_timeout_s":300},"within_budget":true,"options":[],"resource":{"url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping","description":"Paid heartbeat","host_match":true},"bazaar_schema":true,"payto_onchain":{"chain":"base","is_contract":false,"usdc_balance":0.079}},"start_here":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"}