{"uid":"cap_gkfrzCU4g0oZFfVc-Dsyn","slug":"8k4-protocol-erc-8004-agent-trust-score-34538355","name":"8k4 Protocol — ERC-8004 Agent Trust Score","description":"Get an ERC-8004 trust score for a specific agent and chain","url":"https://api.8k4protocol.com/agents/%7Bagent_id%7D/score?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"as_of":"2026-03-03T00:00:00+00:00","chain":"base","score":78.4,"agent_id":21480,"global_id":"eip155:8453:0x8004...:21480","risk_band":"MEDIUM","confidence_tier":"MEDIUM","validator_count_bucket":"10+"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MVHyqcirrHTL_g4R2Yyfr","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns an ERC-8004 trust score, risk band, and confidence tier for a specific on-chain agent by agent ID and chain","exampleAgentPrompt":"What's the ERC-8004 trust score and risk band for agent ID 21480 on the Base chain — I want to know if it's safe to interact with before delegating anything.","exampleUseCases":null,"resultDescription":"A JSON object containing the agent's numeric trust score (0-100), risk band (e.g. MEDIUM), confidence tier, validator count bucket, global EIP-155 identifier, chain name, and the timestamp the score was last computed.","failureModes":["Unknown agent_id returns 404 not found","Unsupported chain name returns 400 bad request","Agent has insufficient validator data, returning low confidence tier","API key or x402 payment missing returns 402 payment required","Rate limit exceeded returns 429 too many requests"],"whenToPreferThis":"Use this endpoint when you need a quick, single-agent trust score and risk classification for a specific ERC-8004 agent on a known chain, especially before delegating tasks or interacting with an unknown agent. Prefer this over the score explanation endpoint when you need only the numeric verdict, not the reasoning behind it.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-07T06:49:56.263Z","isFirstParty":false,"canonicalSlug":"8k4-protocol-erc-8004-agent-trust-score-34538355"}