Trading Intelligence

Token Approval Manager

Check current ERC-20 allowances and generate unsigned approve() calldata for any spender on any EVM chain. Required pre-step before DEX swaps or DeFi protocol interactions.

post/x402/approval-manager

Request

  • Base URL: https://coinrailz.com
  • URL: https://coinrailz.com/x402/approval-manager
  • Auth: API key in header X-API-KEY

Request body

tokenAddressstring required

Token contract address

spenderAddressstring required

Spender address to approve

ownerAddressstring required

Token owner address

chainstring required

Blockchain network

amountstring

Amount to approve (optional, default: max)

Response

Approval transaction data

Changes

No recorded changes to this operation across all 1 revision of this API.