2️⃣Get Allowance

If source quoting asset is an ERC20 token, you should ensure that source token owner has approved sufficient token amount to spender before proceed swap operation. This endpoint provide convenient way to check ERC20 allowance amount.

Get Allowance

get

Query parameters

chainIdintegerRequired

Chain ID.

tokenAddressstringRequired

ERC20 token address.

ownerstringRequired

Owner of ERC20 token.

spenderstringRequired

Spender of ERC20 token.

Responses

200

Successful Response

application/json

Responseany of

or

get

HTTPcURLJavaScriptPython

GET /v1/allowance HTTP/1.1
Host: aggregator-api.xy.finance
Accept: */*

200

Successful Response

{
  "success": true,
  "chainId": 56,
  "tokenAddress": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
  "owner": "0x314c71ff355F9f525334526f339D84a57E664A1f",
  "spender": "0x7D26F09d4e2d032Efa0729fC31a4c2Db8a2394b1",
  "allowance": "25993637666075620961"
}

NOTE : The spender should be the contractAddress in the response of Get Quote. e.g. routes[{ROUTE_INDEX}]["contractAddress"]

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