{"method":"POST","priceUsd":0.001,"network":"eip155:8453","description":"Check the current ERC-20 allowance from an owner wallet to a spender contract on Base or Ethereum. Returns the exact raw allowance for USDC and arbitrary ERC-20 tokens. Use before swaps, recurring payments and autonomous contract execution.","example":{"owner":"0x0000000000000000000000000000000000000000","spender":"0x0000000000000000000000000000000000000000","contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"base"}}