> ## Documentation Index
> Fetch the complete documentation index at: https://injectivelabs-docs-ai-sdk.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Fee Grant

`feegrant` 模块允许账户（授权者）向其他账户（被授权者）授予费用配额。这允许被授权者使用授权者的资金支付交易费用。

## 消息

### MsgGrantAllowance

使用 `MsgGrantAllowance` 消息创建费用配额授权。如果 (granter, grantee) 对已存在授权，则新授权将覆盖之前的授权。

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";
import { MsgGrantAllowance } from "@injectivelabs/sdk-ts/core/modules";

const privateKeyOfGranter = "0x...";

const date = new Date("2023-10-02T00:00:00Z");
const expiration = date.getTime() / 1000;
const granter = "inj...";
const grantee = "inj...";
const allowance = {
  spendLimit: [
    {
      denom: "inj",
      amount: "10000",
    },
  ],
  expiration,
};

const msg = MsgGrantAllowance.fromJSON({
  granter,
  grantee,
  allowance,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey: privateKeyOfGranter,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgRevokeAllowance

可以使用 MsgRevokeAllowance 消息撤销授权。被授权者将无法再使用授权者的资金支付交易费用。

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";
import { MsgRevokeAllowance } from "@injectivelabs/sdk-ts/core/modules";

const privateKey = "0x...";
const granteeAddress = "inj...";
const granterAddress = "inj...";

const params = {
  grantee: granteeAddress,
  granter: granterAddress,
};

const msg = MsgRevokeAllowance.fromJSON(params);

const txHash = await new MsgBroadcasterWithPk({
  privateKey,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```