{"uid":"cap_kJ8Y5Eita9eJcZgFkLdav","slug":"evm-wallet-token-balances-on-base-d9e93caf","name":"EVM Wallet Token Balances on Base","description":"Full wallet portfolio: native ETH + all ERC-20 token balances for an address on Base, with amounts. Send { address }. Let agents read any wallet's holdings.","url":"https://x402-services-production.up.railway.app/api/crypto/balances","method":"POST","headers":{},"bodySchema":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"0x EVM wallet address on Base"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/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_urKJ3T-LcDyuM2tIFtCpo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches all token balances for a given 0x EVM wallet address on the Base chain","exampleAgentPrompt":"Can you pull all the token balances for my wallet 0x4f3A2b1c... on Base so I can see what I'm holding right now?","exampleUseCases":[{"title":"Portfolio snapshot for a DeFi trader","prompt":"What tokens am I holding in my Base wallet 0xAbC123...? I want to see every asset and its balance before I decide what to swap."},{"title":"Wallet audit before bridging funds","prompt":"Check all the token balances in the wallet 0xDef456... on Base — I need to know exactly what's there before I bridge anything over."},{"title":"On-chain due diligence on a counterparty","prompt":"Can you look up the full token holdings of wallet address 0x789Ghi... on Base? I want to see what they actually own on-chain."}],"resultDescription":"A list of all token balances held by the specified 0x EVM wallet on the Base chain, including token symbols, contract addresses, and amounts for each asset.","failureModes":["Invalid or malformed 0x address returns a validation error","Address with no token activity may return an empty balance list","Non-Base EVM addresses (e.g. Ethereum mainnet) may return empty or incorrect results since the endpoint is scoped to Base","Payment failure or insufficient USDC results in a 402 response and no data returned","Rate limiting or infrastructure issues on Railway may cause timeouts"],"whenToPreferThis":"Use this endpoint when you need a quick, keyless, pay-per-call lookup of all token balances for a specific EVM wallet on Base. It is ideal for AI agents that need on-chain portfolio snapshots without managing API subscriptions or credentials. Prefer this over centralized exchange balance APIs when the user's assets are on-chain on Base specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:02:24.921Z","isFirstParty":false}