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GET
GET /api/v2/swap/approve/allowance — Check ERC-20 allowance (EVM only)

Authorizations

Authorization
string
header
required

Use Authorization: Bearer <jwt> for user auth or Authorization: Bearer sk_{keyId}_{secret} for API key auth.

Query Parameters

chainId
integer<int64>
required

EVM chain ID (8453=Base, 56=BSC)

Required range: x >= 0
tokenAddress
string
required

ERC-20 token contract address

walletAddress
string
required

Wallet address to check allowance for

Response

200 - application/json

Allowance amount

V2 success response envelope

data
object
required
requestId
string
required
pagination
object | null

Page-based pagination info (per RFC)