POST
/
api
/
v1
/
erc20
/
permit
curl 'https://groupos.xyz/api/v1/erc20/permit' \
--request POST \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <token>' \
--data-raw '{
    "chainId": 5,
    "contractAddress": "0x67F4732266C7300cca593C814d46bee72e40659F",
    "recipientAddress": "0xc517c83f417b73dA98647dad0FCB80af9f3b9531",
    "amount": 1.5
}'

{
  "success": true,
  "permitId": "8493b65e-e0a1-4b13-90ec-7af3a923f8b9",
  "signature": "0xecb043a2da3a1c5e9a0a00cea8ffabb5815b12a9e1f91b97005c8d92b41b19cea8ffabb5815b12a9e1f91b97005c8d92b41b19ce",
  "preparedCall": {
    "to": "0xfb7b7f2d7ecef20a3a7a8ff4b3ae4a66d06a8df7",
    "value": "0",
    "data": "0x23b872dd000000000000000000000000c517c83f417b73da98647dad0fcb80af9f3b9531000000000000..."
  }
}

​
Permiting vs. Minting

Permiting enables you to permit an address to mint tokens on their own time and does not itself produce a blockchain transaction. This makes permiting free for your application as users will be paying with their own gas at the time of mint, which can take place on your own interface or use a default experience provided by Station.

When you permit an token, our cloud-wallets sign an approval for the recipient that is used to authenticate their mint call within the smart contract. Each signature can optionally be set with an expiration as well.

​
Body

chainId
number
required

The id of the chain supporting the token. This cannot be changed after creation.

contractAddress
string
required

The token smart contract address to permit with.

recipientAddress
string
required

The address to permit an token to.

amount
number
required

The amount of tokens to mint to recipient in human-readable form, decimals supported.

expiration
date

The datetime for when this permit expires.

​
Response

success
boolean

Indicates whether the call was successful.

permitId
string

ID for the newly created permit.

signature
string

Raw bytes signature of approval for the newly created permit.

preparedCall
object

A call object prepared to be used in a new transaction.

Mint TokensBatch Permits