{"uid":"cap_8NST0UMnm1lAC7p38K1CI","slug":"toolbelt402-token-info-lookup-47d4deb0","name":"Toolbelt402 Token Info Lookup","description":"Pay-per-call utility API for AI agents — x402, USDC on Base, no API key.","url":"https://toolbelt402.catalystdesk.workers.dev/v1/token?utm_source=zero.xyz","method":"GET","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":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"address":{"type":"string"}}}}},"output":{"type":"object"}}},"responseSchema":{"type":"json","example":{"symbol":"USDC","decimals":6,"heuristic_flags":["upgradeable_proxy_eip1967"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tVpW3lSkQD5EpcUmhuCRO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns on-chain metadata for an ERC-20 token contract address on Base, including symbol, decimals, and heuristic flags like upgradeable proxy detection.","exampleAgentPrompt":"What token is at the contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — give me the symbol, decimals, and any proxy flags.","exampleUseCases":[{"title":"Identify unknown token contract","prompt":"I found this contract address 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA on Base in a transaction — can you tell me what token it is, its symbol, and how many decimals it uses?"},{"title":"Check for upgradeable proxy risk","prompt":"Before I interact with this DeFi contract at 0x4200000000000000000000000000000000000006, can you check if it's an upgradeable proxy and give me its token metadata?"},{"title":"Enrich token data for portfolio app","prompt":"I need the symbol and decimals for the token at address 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb on Base so I can display balances correctly in my app."}],"resultDescription":"Returns a JSON object with the token's symbol (e.g. 'USDC'), decimals (e.g. 6), and an array of heuristic_flags (e.g. ['upgradeable_proxy_eip1967']) describing smart contract patterns detected on-chain.","failureModes":["Invalid or non-ERC-20 contract address returns empty or error response","Address not found on Base network returns null metadata","Payment failure via x402 protocol results in 402 response before data is returned","Non-checksummed or malformed address may cause lookup failure"],"whenToPreferThis":"Choose this endpoint when you need lightweight, no-auth ERC-20 token metadata — symbol, decimals, and proxy heuristics — for contracts deployed on Base, and you want pay-per-call pricing via x402 USDC micropayments without managing API keys. Prefer it over general blockchain explorers when you want programmatic, structured JSON output with heuristic contract analysis baked in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:30:15.756Z","isFirstParty":false,"canonicalSlug":"toolbelt402-token-info-lookup-47d4deb0"}