{"uid":"cap_UNnyJqz4yZSBCgzxurmHY","slug":"chainverdict-portfolio-balance-lookup-400efadf","name":"ChainVerdict Portfolio Balance Lookup","description":"Native ETH and ERC-20 token balances for a Base address in one call, read live from chain at a stated block height.","url":"https://chainverdict.xyz/v1/data/portfolio/:addr","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"},"pathParams":{"type":"object","required":["addr"],"properties":{"addr":{"type":"string","description":"Base address to read balances for"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_igfATTwTDwDmTh15EFret","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns native ETH and ERC-20 token balances for a given Base address in a single call, read live from chain at a specified block height.","exampleAgentPrompt":"What are all the ETH and ERC-20 token balances currently held by the Base address 0x1234abcd... — pull it live from chain right now.","exampleUseCases":[{"title":"DeFi portfolio snapshot for user","prompt":"Can you check all the token balances — ETH and any ERC-20s — for my Base wallet 0xAbCd1234... and show me what I'm currently holding on chain?"},{"title":"Pre-payment balance verification","prompt":"Before I send that USDC transfer, check whether the sender address 0x9f8e7d6c... actually has enough ETH and USDC on Base right now to cover it."},{"title":"Monitoring a whale wallet","prompt":"Look up the full on-chain portfolio of Base address 0xDeFi5678... — I want to see all their native ETH and ERC-20 token holdings as of the latest block."}],"resultDescription":"Returns a structured response containing the native ETH balance and a list of ERC-20 token balances held by the specified Base address, read live from the blockchain at a stated block height. Each entry typically includes token symbol, contract address, and balance with decimals applied.","failureModes":["Invalid or malformed Base address returns an error or empty result","Address with no token holdings returns zero balances","Network or RPC unavailability may cause timeout or 503","Querying at a very old block height may not be supported","Rate limiting if called excessively beyond the per-call pricing model"],"whenToPreferThis":"Choose this endpoint when you need a combined snapshot of both native ETH and ERC-20 balances for a Base address in a single API call, avoiding the need to make separate requests per token. Ideal for portfolio views, pre-transfer checks, and agent workflows that need to reason about a wallet's full holdings on Base at a specific block.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:37:37.183Z","isFirstParty":false}