{"uid":"cap_CAeR3qRponp4j3WTGsYY_","slug":"saylor-innovations-x402-endpoint-trust-auditor-8c08fef1","name":"Saylor Innovations x402 Endpoint Trust Auditor","description":"x402 endpoint trust report - repeated 402 probes, price stability, latency and Coinbase Bazaar usage","url":"https://saylorinnovations.com/api/audit/x402?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","examples":["https://saylorinnovations.com/api/x402/ping"],"maxLength":2000,"description":"Full URL of the x402-paid resource to check (GET or POST-only); probed three times without payment"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["url","verdict","score","flags"],"properties":{"url":{"type":"string","description":"URL that was probed"},"flags":{"type":"array","items":{"type":"string"},"description":"Specific problems found; empty when none"},"scope":{"type":["string","null"],"description":"Scope the result covers"},"score":{"type":"number","description":"Trust score from 0 to 100"},"bazaar":{"type":"object","description":"Coinbase Bazaar record: listed flag, 30-day calls, unique payers and last call"},"checks":{"type":"object","description":"Individual check outcomes"},"verdict":{"enum":["healthy","caution","unreliable"],"type":"string","description":"healthy, caution or unreliable"},"challenge":{},"checked_at":{"type":["string","null"],"description":"Time the check was run (UTC)"},"latency_ms":{"type":"object","description":"Probe latency: min, median, max and each probe"},"method_probed":{"type":["string","null"],"description":"Method probed"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ch9tnKJ742872I8Vz382O","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes an x402-paid API endpoint three times without payment and returns a trust report with verdict, score, flags, latency stats, and Coinbase Bazaar usage data","exampleAgentPrompt":"Can you run a trust audit on the x402 endpoint at https://saylorinnovations.com/api/x402/ping using GET and tell me if it's healthy, the trust score, any flags, and its Bazaar usage stats?","exampleUseCases":[{"title":"Pre-integration reliability check","prompt":"Before I integrate this paid API into my app, can you audit the x402 endpoint at https://example.com/api/paid-data using GET and tell me whether it's healthy, what its trust score is, and if there are any red flags I should know about?"},{"title":"Diagnosing a flaky micropayment endpoint","prompt":"Something seems off with the x402 endpoint at https://partner.io/api/premium/feed — can you probe it with a GET audit and check the latency stats and any flags to see if it's unreliable?"},{"title":"Verifying Bazaar listing activity","prompt":"I want to know how active the x402 endpoint at https://dataservice.io/api/v1/stream is on Coinbase Bazaar — can you run a GET trust audit and show me the 30-day call count, unique payers, and last call time?"}],"resultDescription":"A JSON object containing: the probed URL, a verdict (healthy/caution/unreliable), a numeric trust score (0–100), an array of flags describing specific problems, individual check outcomes, probe latency statistics (min, median, max per probe), Coinbase Bazaar record (listed flag, 30-day calls, unique payers, last call), the HTTP method probed, scope, and the UTC timestamp of the check.","failureModes":["Target URL is unreachable or returns non-402 responses — verdict likely unreliable with flags","URL parameter missing or malformed — request validation error","Target endpoint has inconsistent pricing across probes — price_instability flag raised","High latency or timeouts on probes — reflected in latency_ms and may trigger caution verdict","Endpoint not listed on Coinbase Bazaar — bazaar.listed will be false with no usage stats"],"whenToPreferThis":"Choose this endpoint when you need to evaluate the trustworthiness and reliability of a specific x402 payment-gated API before integrating or paying for it, or when you want to audit whether an x402 endpoint is behaving correctly (consistent 402 challenges, stable pricing, acceptable latency). It is especially useful for agents operating in the Coinbase Bazaar ecosystem who want to validate endpoints before routing micropayments through them.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:07:59.551Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-x402-endpoint-trust-auditor-8c08fef1"}