{"uid":"cap_qvbSBf0Y1EZ_uRxiHE0LT","slug":"nomos-counterparty-intelligence-api-d1318a66","name":"Nomos Counterparty Intelligence API","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/wallet/counterparty-intelligence","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"queryParams":{"type":"object","required":["chain","address","lookback_days","limit"],"properties":{"chain":{"enum":["ethereum","base"],"type":"string","description":"Supported EVM chain for the counterparty summary."},"limit":{"type":"integer","maximum":10,"minimum":1,"description":"Maximum material counterparty categories to return."},"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Wallet address to summarize."},"lookback_days":{"type":"integer","maximum":30,"minimum":1,"description":"Lookback window for the bounded summary. Maximum 30 days."},"idempotency_key":{"type":"string","maxLength":128,"description":"Optional caller-supplied idempotency key."}}}},"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-counterparty-intelligence","assessment":{"flags":[],"risk_level":"low","risk_score":0}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BuxVOvpD2wPGwW8TkY9O1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns identity, risk score, and behavioral summary for a wallet address based on its on-chain counterparty activity over a specified lookback window.","exampleAgentPrompt":"Before I send payment to 0x742d35Cc6634C0532925a3b8D4C9B0F3e5aA1234, can you run a counterparty intelligence check on that Base wallet for the last 14 days and flag any risk concerns?","exampleUseCases":[{"title":"Pre-payment wallet risk check","prompt":"I'm about to pay 0xAbCd1234567890abcdef1234567890abcdef1234 on Base — can you pull a counterparty risk profile for the last 7 days and tell me if there are any red flags before I proceed?"},{"title":"DeFi counterparty due diligence","prompt":"We're onboarding a new liquidity partner at 0x9f2aB3C4d5E6f7a8B9c0D1e2F3a4B5c6D7e8F901 on Ethereum — run a 30-day counterparty intelligence report and summarize their risk level and main activity categories, top 5 please."},{"title":"Agent autonomous payment guard","prompt":"Before my agent sends any USDC payout, check the recipient wallet 0x1A2b3C4d5E6f7A8B9c0D1E2f3A4b5C6d7E8F9a0 on Base against the last 10 days of on-chain counterparty data to make sure it scores low risk."}],"resultDescription":"A JSON object containing the network identifier, product name, a risk assessment with risk_level (e.g. 'low', 'medium', 'high'), a numeric risk_score, and a flags array listing any specific risk signals. Additional fields may include identity, activity, and provenance objects summarizing behavioral context for the queried wallet.","failureModes":["Invalid wallet address format (must match 0x + 40 hex chars) returns validation error","Unsupported chain value (only 'ethereum' and 'base' accepted) returns enum error","lookback_days exceeding 30 or limit exceeding 10 returns schema validation failure","Insufficient USDC payment (x402 payment not included or underpaid) returns 402 Payment Required","Wallet with no transaction history in the window may return empty or minimal response","Network timeouts or upstream data unavailability may result in 5xx errors"],"whenToPreferThis":"Use this endpoint when an autonomous agent needs a fast, pay-per-request risk and identity preflight check on a wallet address before executing a transaction, approving a payment, or onboarding a counterparty. It is specifically suited for Base and Ethereum wallets, offers bounded lookback windows (1–30 days), and returns structured risk scores with flags — ideal for programmatic go/no-go decisions without requiring a full KYC integration or ongoing subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:02:24.921Z","isFirstParty":false}