{"uid":"cap_vaPqKjjsdjl13kXx_EB98","slug":"aun-base-token-lookup-406f9132","name":"AUN Base Token Lookup","description":"Base Token Info: name, symbol, decimals, total supply and contract check for any ERC-20 on Base mainnet. $0.002 per call.","url":"https://a-upgradenet.com/x402/base-token?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","description":"ERC-20 contract address on Base."}}},"responseSchema":{"type":"json","example":{"name":"USD Coin","chain":"base","status":"completed","symbol":"USDC","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","decimals":6,"is_erc20":true,"is_contract":true,"total_supply":"4000000000.0","total_supply_raw":"4000000000000000"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_o7ySwjuJMiiiRroosyTCp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up ERC-20 token metadata on the Base blockchain by contract address, returning name, symbol, decimals, supply, and contract status.","exampleAgentPrompt":"Can you look up the token details for the contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — I need the name, symbol, decimals, and total supply?","exampleUseCases":[{"title":"Verify token before DeFi swap","prompt":"Before I swap into this token, can you check if 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base is a real ERC-20 contract and tell me its name, symbol, and decimals?"},{"title":"Enrich token data in portfolio tracker","prompt":"I'm building a portfolio tracker — can you fetch the full token metadata for the Base contract at 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb so I can display the name, symbol, and decimal precision?"},{"title":"Audit token supply for research","prompt":"I'm researching this token — what's the total supply and is 0x4200000000000000000000000000000000000006 actually a deployed ERC-20 contract on Base?"}],"resultDescription":"Returns a JSON object with the token's name, symbol, chain (base), decimals, contract address, total supply as a human-readable number and raw integer, and boolean flags confirming whether the address is an ERC-20 and a deployed contract, along with a status field indicating lookup completion.","failureModes":["Invalid or malformed contract address returns an error or empty result","Address exists but is not an ERC-20 contract — is_erc20 will be false","Address is an EOA (externally owned account), not a contract — is_contract will be false","Network unavailability or Base RPC issues may cause timeout or 5xx errors","Payment failure (x402 protocol) results in 402 response and no data returned"],"whenToPreferThis":"Use this endpoint when you need on-chain ERC-20 token metadata specifically from the Base (Coinbase L2) network, such as verifying a contract address before a swap, enriching a portfolio with token details, or auditing token supply. Prefer this over general Ethereum mainnet token lookups when the asset is on Base, and over off-chain token registries when you need authoritative on-chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T18:39:48.095Z","isFirstParty":false,"canonicalSlug":"aun-base-token-lookup-406f9132"}