{"slug":"api-zfinia-com-x402-v1-base-wallet-snapshot-d441c3","title":"Read a Base wallet native ETH balance and up to five ERC20 token balances at one","host":"api.zfinia.com","method":"POST","resource":"https://api.zfinia.com/x402/v1/base-wallet-snapshot","category":"market","description":"Read a Base wallet native ETH balance and up to five ERC20 token balances at one pinned block. Separate balance lookups each answer at whatever height they happened to see, so they cannot be compared; these are all read at the same block and the block is in the response. Replaces six calls with one.","price_listed":0.008,"price_asked":0.008,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":2262,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"tokens":["0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"],"wallet":"0x25e8245f07d5e4873987293dad666afbe56a9608"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"tokens":{"description":"Up to five ERC20 contract addresses to read balances for.","items":{"pattern":"^0x[0-9a-fA-F]{40}$","type":"string"},"maxItems":5,"type":"array"},"wallet":{"description":"Wallet address to read.","pattern":"^0x[0-9a-fA-F]{40}$","type":"string"}},"required":["wallet"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"additionalProperties":false,"properties":{"block_hash":{"description":"Hash of that block.","type":"string"},"block_number":{"description":"Decimal block height every value in this response was read at.","type":"string"},"chain":{"const":"base"},"chain_id":{"const":8453},"native_balance_wei":{"type":"string"},"request_id":{"description":"Delivery request identifier; also returned in x-foundry-request-id.","type":"string"},"rpc_calls":{"description":"Upstream RPC calls this response cost.","type":"integer"},"service_id":{"description":"Canonical service identifier.","type":"string"},"service_version":{"description":"Version of the invoked service.","type":"string"},"tokens":{"items":{"additionalProperties":false,"properties":{"balance_raw":{"description":"Raw balance in the token smallest unit; apply decimals yourself.","type":"string"},"token":{"type":"string"}},"required":["token","balance_raw"],"type":"object"},"type":"array"},"wallet":{"type":"string"}},"required":["request_id","service_id","service_version","chain","chain_id","block_number","block_hash","rpc_calls","wallet","native_balance_wei","tokens"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-02","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.008,"price_match":true,"latency_ms":2262,"error":null}],"description_full":"Read a Base wallet native ETH balance and up to five ERC20 token balances at one pinned block. Separate balance lookups each answer at whatever height they happened to see, so they cannot be compared; these are all read at the same block and the block is in the response. Replaces six calls with one.","last_updated":"2026-10-02T07:28:12.756Z","schemes":["exact"]}