{"uid":"cap_OADqbH9lUEDbVTe1qY0Fw","slug":"x402-trust-trust-scores-for-x402-endpoints-1ac0c2fc","name":"x402 Trust: Trust Scores for x402 Endpoints","description":"Trust score (0-100, grade A-F) for any x402 endpoint -- listed in our catalog or not. Unlike uptime-only checkers, we return ECONOMIC PROOF: the REAL on-chain USDC settlement volume and distinct-payer count for the endpoint's payTo address -- is anyone actually paying it, or is it just live? Computed deterministically from continuous monitoring: 30d probe uptime, 402-envelope spec compliance, latency, observed age, on-chain settlement activity, and advertised-price stability. Includes a full component breakdown, machine-readable flags, and an honest observedDays (we report only the history we actually have, with dataCompleteSince marking our gap-free on-chain coverage). Uncataloged endpoints are live-probed on your first query and auto-adopted into the monitored catalog (first-contact score with low confidence -- history accumulates from there). Each paid call also refreshes the endpoint's free public snapshot (page, badge, card), so a fresh score shows everywhere immediately. Know before you pay.","url":"https://x402-trust.com/v1/x402-trust","method":"POST","headers":{},"bodySchema":{"type":"object","required":["resource"],"properties":{"resource":{"type":"string","description":"Full x402 resource URL exactly as listed in discovery (e.g. https://api.example.com/v1/thing)."}}},"responseSchema":{"flags":"array","grade":"string","score":"number","stats":"object","resource":"string","breakdown":"object","confidence":"number"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_PZlNRbp7fNrNh_xEO7471","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns uptime, compliance, settlement activity, and reliability grades for any x402-protocol API endpoint","exampleAgentPrompt":"Before we pay for that x402 API, can you pull the full trust breakdown for https://api.example.com/v1/thing — I want to see the grade, uptime stats, settlement volume, and any compliance flags?","exampleUseCases":[{"title":"Pre-purchase x402 API due diligence","prompt":"I'm about to integrate https://api.imageservice.io/generate into my agent but I want to know if it's trustworthy first — can you get me the full trust score, uptime, and settlement activity for that x402 endpoint?"},{"title":"Flagged or delisted endpoint check","prompt":"I've been using https://api.datafeeds.io/prices in my pipeline but it's been acting weird lately — run a trust check on it and tell me if it's been delisted or has any compliance flags."},{"title":"Comparing x402 endpoint reliability","prompt":"I'm choosing between a few x402 data providers and need to vet them — can you get the trust grade and 30-day settlement volume for https://api.provider-alpha.com/v1/feed so I can compare?"}],"resultDescription":"Returns a JSON object containing: an overall letter grade (e.g. A), a numeric trust score (0–100), a detailed breakdown across uptime, latency, observed age, price stability, envelope compliance, and settlement activity (each 0–1), raw 30-day stats (probe counts, successful probes, average latency, settlement count, distinct payers, settled USDC volume), a confidence value, any flags, the endpoint's payTo address, delisting status, and a provider-advertised description and service name.","failureModes":["Unknown or unmonitored endpoint returns low confidence score or empty stats","Endpoint not yet observed returns partial breakdown with low observedAge","Network timeout if x402-trust.com monitoring backend is unavailable","Invalid or malformed resource URL causes request rejection","Very new endpoints may have limited 30-day data, resulting in low confidence"],"whenToPreferThis":"Use this endpoint when an AI agent needs to evaluate the trustworthiness of an x402-protocol API before paying for it, integrating it into a pipeline, or recommending it to a user. It is uniquely suited for x402 ecosystem due diligence — covering on-chain USDC settlement volume, 402-envelope compliance, and 24/7 probe-based uptime, none of which generic API monitoring tools provide.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:31:00.222Z","isFirstParty":false}