For agents and apps: one HTTP call returns the native coin plus a fixed list of verified major tokens (USDC, USDT, DAI, EURC, bridged USDC, WETH, WBTC/cbBTC, wrapped native) for any 0x address on Base, Ethereum, Arbitrum, Optimism, Polygon, Avalanche and BNB Chain, SOL + USDC/USDT on Solana and TRX + USDT on Tron. Pass up to three addresses (one EVM, one Solana, one Tron) and up to 10 custom tokens. Live reads at the latest block, block numbers included; identical calls within 20 s may be served from cache. 0.002 USDC per call, paid with x402 on Base (v1 and v2 clients). No key, no signup.
GET /v1/balances?address=0x...,<solana>,T...&chains=base,ethereum,solana,tron&tokens=base:0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed
Limits, honestly: it does not discover arbitrary tokens (pass them via tokens=), and the stablecoin total is face value, not a market price; on Solana it reads associated token accounts (where wallets normally hold tokens). Data from public RPC nodes; failed chains are listed, and if all fail you are not charged.
OpenAPI · token list · llms.txt · MCP · Terms · by Made by DevX