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GET
/
swap
/
v1
/
{chainId}
/
approve
/
allowance
Check token allowance
curl --request GET \
  --url https://api.akka.finance/swap/v1/{chainId}/approve/allowance \
  --header 'apikey: <api-key>'
{
  "allowance": "0"
}

​
When to use

Call this before swapping an ERC-20 token to check if the AKKA Router already has sufficient spending approval: 
const { allowance } = await response.json();
const swapAmount = BigInt('1000000000000000000');

if (BigInt(allowance) < swapAmount) {
  // Need to approve first — call /approve/transaction
} else {
  // Allowance sufficient — proceed to /swap
}
For native tokens (HYPE), allowance is always unlimited. You can skip the allowance check and go directly to the swap.

Authorizations

​
apikey
string
header
required

API key for authentication. Contact AKKA on Telegram to obtain your key.

Path Parameters

​
chainId
enum<integer>
required

Blockchain chain ID

Available options:
999
Example:

999

Query Parameters

​
tokenAddress
string
required

Contract address of the token to check allowance for.

Pattern: ^0x[a-fA-F0-9]{40}$
Example:

"0xB8CE59FC3717ada4C02eaDF9682A9e934F625ebb"

​
walletAddress
string
required

Wallet address to check the allowance for.

Pattern: ^0x[a-fA-F0-9]{40}$
Example:

"0xD3C0F471488523b378F2D9C21939c97300c510F5"

Response

Allowance retrieved successfully

​
allowance
string
required

Number of tokens the AKKA Router is allowed to spend (in wei)

Example:

"0"