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POST
/
token
/
approve
Approve ERC20 allowance (EVM)
curl --request POST \
  --url https://api.afkcrypto.com/v1/token/approve \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "chain": "<string>",
  "token": "<string>",
  "spender": "<string>",
  "amount": "<string>",
  "from": "<string>"
}
'
{ "id": "tx_...", "status": "SUBMITTED", "hash": "0x...", "explorerUrl": "https://basescan.org/tx/0x...", "chainName": "Base" }
EVM only. Requires Idempotency-Key header.
{ "id": "tx_...", "status": "SUBMITTED", "hash": "0x...", "explorerUrl": "https://basescan.org/tx/0x...", "chainName": "Base" }

Authorizations

​
x-api-key
string
header
required

Headers

​
Idempotency-Key
string<uuid>
required

Provide a unique Idempotency-Key per user to ensure single submission.

Body

application/json
​
chain
string
required

EVM chain slug.

​
token
string
required

ERC20 token address to approve.

​
spender
string
required

Spender (router) address to approve.

​
amount
string
required

Allowance amount in token units (uint256 string).

​
from
string | null

Optional sender wallet; defaults to user's default wallet for the chain.

Response

Submission accepted

​
id
string
required

AFK transaction id for the submitted action.

​
status
enum<string>
required

Submission status.

Available options:
SUBMITTED
​
hash
string | null
required

On-chain transaction hash/signature (may be null at submission time).

​
explorerUrl
string | null
required

Direct link to the transaction on a chain explorer. Null until a hash/signature exists.

​
chainName
string
required

Human-readable chain name for display (e.g., Base, Ethereum, Solana).