{"uid":"cap_K11awMmp12uN96zl-VUb7","slug":"blockchain-chain-id-reference-lookup-f7666765","name":"Blockchain Chain ID Reference Lookup","description":"Reference data for a blockchain by its chainId: name, gas/native token, block explorers, number of public RPCs and website. Utility for multi-chain agents. Live from chainid.network (ethereum-lists, open data).","url":"https://api.vextorium.com/info-red-pago?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["chain_id"],"properties":{"chain_id":{"type":"integer","description":"Chain id, e.g. 1 (Ethereum), 8453 (Base), 42161 (Arbitrum)"}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":["object","null"],"properties":{"web":{"type":["string","null"]},"nota":{"type":["string","null"]},"fuente":{"type":["string","null"]},"nombre":{"type":["string","null"]},"testnet":{"type":["boolean","null"]},"chain_id":{"type":["number","null"]},"moneda_gas":{"type":["string","null"]},"abreviatura":{"type":["string","null"]},"exploradores":{"type":["array","null"],"items":{"type":["null","string"]}},"decimales_gas":{"type":["number","null"]},"num_rpc_publicos":{"type":["number","null"]}}}}}}},"responseSchema":{"type":"json","example":{"web":"https://base.org","nota":"Datos de referencia de la red. Fuente: chainid.network (ethereum-lists, datos abiertos).","fuente":"chainid.network","nombre":"Base","testnet":false,"chain_id":8453,"moneda_gas":"ETH","abreviatura":"ETH","exploradores":["https://basescan.org","https://base.blockscout.com","https://base.dex.guru"],"decimales_gas":18,"num_rpc_publicos":10}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TD6xEE83yxNHX3vNQFftQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns reference metadata for a blockchain given its chainId: name, native gas token, block explorers, public RPC count, and website.","exampleAgentPrompt":"What's the name, native gas token, and block explorer URL for the blockchain with chain ID 42161?","exampleUseCases":[{"title":"Identify unknown chain in transaction","prompt":"I got a transaction from chain ID 10 — what blockchain is that, what's its native token, and is there a block explorer I can use to look it up?"},{"title":"Check if chain is a testnet","prompt":"Is chain ID 80001 a testnet or mainnet? Give me its full name and any relevant details."},{"title":"Build multi-chain agent config","prompt":"I need the name, gas token symbol, decimals, and number of public RPCs for chain ID 8453 so I can configure my agent to support it."}],"resultDescription":"A JSON object containing the blockchain's full name, abbreviation, native gas token symbol and decimals, list of block explorer URLs, count of public RPCs, official website, testnet boolean flag, and optional notes. Returns null fields where data is unavailable.","failureModes":["Unknown chain_id returns null or empty fields","Chain ID not in ethereum-lists results in incomplete data","Stale data if upstream chainid.network has not updated recently","Missing chain_id in request body causes validation error"],"whenToPreferThis":"Use this endpoint when an agent needs to resolve a raw EVM chain ID integer into human-readable blockchain metadata (name, token, explorers) for display, routing, or configuration — especially in multi-chain workflows where the chain is only known by its numeric ID. Prefer this over hardcoding chain data, as it pulls live from the open ethereum-lists dataset.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:46:29.887Z","isFirstParty":false,"canonicalSlug":"blockchain-chain-id-reference-lookup-f7666765"}