x402-chainlink
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    Function getPermitDomain

    • Get permit domain for a token

      Returns the EIP-712 domain parameters needed for signing a permit. These parameters must match what the token contract expects.

      Parameters

      • tokenAddress: `0x${string}`

        Token contract address

      • chainId: number

        Chain ID

      Returns PermitDomain | undefined

      PermitDomain or undefined if token doesn't support permit

      const domain = getPermitDomain(
        '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913', // USDC on Base
        8453
      );
      // Returns:
      // {
      //   name: 'USD Coin',
      //   version: '2',
      //   chainId: 8453,
      //   verifyingContract: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      // }

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