{"uid":"cap_ovczqwmLo0070BmPvAbl1","slug":"nomos-merchant-trust-assessment-c30c3d6d","name":"Nomos Merchant Trust Assessment","description":"Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.","url":"https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/merchant/trust","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"queryParams":{"type":"object","required":["merchant_id","origin","amount_usdc","purpose"],"properties":{"origin":{"type":"string","maxLength":500,"minLength":8},"wallet":{"type":"string","maxLength":120,"minLength":26},"purpose":{"type":"string","maxLength":120,"minLength":2},"amount_usdc":{"type":"string","pattern":"^[0-9]+(?:\\.[0-9]{1,6})?$"},"merchant_id":{"type":"string","maxLength":160,"minLength":1},"trust_level":{"enum":["unknown","known","verified"],"type":"string"},"idempotency_key":{"type":"string","maxLength":128}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"network":{"type":"string"},"product":{"type":"string"},"activity":{"type":"object"},"identity":{"type":"object"},"assessment":{"type":"object"},"provenance":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"network":"eip155:8453","product":"nomos-merchant-trust","assessment":{"flags":[],"risk_level":"low","risk_score":0}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.2","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":"$0.2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Qd7JyB8h5rcY2NBRNyeCJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.2","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Evaluates the risk and trustworthiness of a merchant for a given payment or transaction context, returning a risk score, risk level, and flags.","exampleAgentPrompt":"Before my agent pays 50 USDC to merchant ID 'acme-store-001' from origin 'https://acme.store' for 'software subscription', can you run a Nomos merchant trust assessment and tell me the risk level and any flags?","exampleUseCases":[{"title":"Pre-payment merchant risk check","prompt":"My agent is about to pay 200 USDC to merchant 'globalparts-supplier' from 'https://globalparts.io' for 'hardware procurement' — can you check their trust level and risk score before we proceed?"},{"title":"Flagging unknown merchants in agent workflows","prompt":"I have an autonomous agent that pays vendors automatically. Before it sends 15 USDC to merchant ID 'new-vendor-xyz' at origin 'https://newvendor.example.com' for 'API access', assess whether this merchant is low, medium, or high risk."},{"title":"Verifying known merchant trust before large transfer","prompt":"We're about to authorize a 500 USDC payment to our recurring merchant 'enterprise-saas-42' from 'https://saas42.com' for 'annual license renewal' — run a Nomos trust preflight and confirm the risk score is acceptable before my agent executes."}],"resultDescription":"Returns a JSON object with the network (e.g. 'eip155:8453' for Base), product name ('nomos-merchant-trust'), and an assessment object containing risk_level ('low', 'medium', or 'high'), a numeric risk_score, and a flags array listing any specific risk signals. May also include identity, activity, and provenance sub-objects with enriched merchant context.","failureModes":["Missing required query params (merchant_id, origin, amount_usdc, purpose) returns a 400 validation error","Invalid amount_usdc format (non-numeric or wrong precision) causes schema rejection","Payment of 0.2 USDC required via x402 protocol; missing or failed payment returns 402","Unknown merchant_id with no data may return risk_level 'unknown' with zero score and no flags","Network or Cloudflare Worker outage returns 5xx; retry with idempotency_key to avoid double-charge"],"whenToPreferThis":"Use this endpoint when an autonomous agent needs a fast, pay-per-request preflight trust signal for a specific merchant before executing a USDC payment on Base. Prefer it over generic fraud APIs when you need blockchain-native risk scoring tied to merchant identity and on-chain provenance, and when operating in agentic pipelines that already use x402 micropayment infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:44:05.424Z","isFirstParty":false}