{"uid":"cap_izjcjG-RYyxCyQebTc0lJ","slug":"agent402-uk-caip-19-asset-id-validator-23673912","name":"Agent402 UK — CAIP-19 Asset ID Validator","description":"Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.","url":"https://agent402.co.uk/v1/chain/caip19","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"id":{"type":"string","description":"CAIP-19 asset id"}}},"responseSchema":{"type":"json","example":{"caip2":"eip155:8453","valid":true,"asset_namespace":"erc20"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/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_IsHyIxO3Ql_OKpImzlj1I","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and parses a CAIP-19 asset identifier, returning the CAIP-2 chain reference, asset namespace, and validity flag","exampleAgentPrompt":"Can you validate this CAIP-19 asset ID for me — 'eip155:8453/erc20:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913' — and tell me if it's valid and what chain and namespace it maps to?","exampleUseCases":[{"title":"Pre-payout asset ID verification","prompt":"Before I send out this USDC payout, validate the CAIP-19 ID 'eip155:8453/erc20:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913' — I need to confirm it's a valid erc20 asset on Base."},{"title":"Agent DeFi pipeline asset check","prompt":"My agent is about to interact with a token — can you parse 'eip155:1/erc20:0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' and confirm what chain and asset namespace it belongs to before we proceed?"},{"title":"CAIP-19 format debugging","prompt":"I've got this asset identifier 'eip155:137/erc20:0x2791bca1f2de4661ed88a30c99a7a9449aa84174' and I'm not sure if it's correctly formatted — validate it and tell me if there are any issues."}],"resultDescription":"Returns a JSON object with three fields: 'valid' (boolean indicating whether the CAIP-19 ID is well-formed and recognized), 'caip2' (the CAIP-2 chain reference extracted from the ID, e.g. 'eip155:8453'), and 'asset_namespace' (the asset type such as 'erc20'). Costs $0.001 USDC per call, paid via x402 on Base. No API key required.","failureModes":["Malformed CAIP-19 string returns valid:false with no caip2 or asset_namespace","Unrecognized chain or namespace may return valid:false","Missing 'id' field in request body causes a 400 error","Payment failure via x402 returns a 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when an agent needs to deterministically validate or parse a CAIP-19 asset identifier before executing a blockchain operation, payout, or DeFi workflow — avoiding wasting LLM tokens on a lookup that is pure string parsing. Ideal for pre-flight checks in payment pipelines, asset routing logic, or any workflow that must confirm a token's chain and namespace cheaply and reliably. No API key needed; pay $0.001 USDC per call via x402 on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:37:47.579Z","isFirstParty":false}