> ## 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.

# Permissions

查询链上 permissions 模块相关数据的示例代码片段。

## 使用 gRPC

### 获取所有命名空间

```ts theme={null}
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { ChainGrpcPermissionsApi } from "@injectivelabs/sdk-ts/client/chain";

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcPermissionsApi = new ChainGrpcPermissionsApi(endpoints.grpc);

const allNamespaces = await chainGrpcPermissionsApi.fetchAllNamespaces();

console.log(allNamespaces);
```

### 根据 denom 获取命名空间

```ts theme={null}
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { ChainGrpcPermissionsApi } from "@injectivelabs/sdk-ts/client/chain";

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcPermissionsApi = new ChainGrpcPermissionsApi(endpoints.grpc);

const subdenom = "NINJA";
const includeRoles = true;

const namespace = await chainGrpcPermissionsApi.fetchNamespaceByDenom({
  subdenom,
  includeRoles: includeRoles,
});

console.log(namespace);
```

### 根据 denom 获取与地址关联的所有角色

```ts theme={null}
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { ChainGrpcPermissionsApi } from "@injectivelabs/sdk-ts/client/chain";

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcPermissionsApi = new ChainGrpcPermissionsApi(endpoints.grpc);

const injectiveAddress = "inj...";
const subdenom = "NINJA";

const addressRoles = await chainGrpcPermissionsApi.fetchAddressRoles({
  injectiveAddress,
  denom: subdenom,
});

console.log(addressRoles);
```

### 获取与给定 denom 角色关联的所有地址

```ts theme={null}
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { ChainGrpcPermissionsApi } from "@injectivelabs/sdk-ts/client/chain";

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcPermissionsApi = new ChainGrpcPermissionsApi(endpoints.grpc);

const subdenom = "NINJA";
const role = "role";

const addressesByRole = await chainGrpcPermissionsApi.fetchAddressesByRole({
  subdenom,
  role: role,
});

console.log(addressesByRole);
```

### 获取给定 injective 地址的凭证

```ts theme={null}
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { ChainGrpcPermissionsApi } from "@injectivelabs/sdk-ts/client/chain";

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcPermissionsApi = new ChainGrpcPermissionsApi(endpoints.grpc);

const injectiveAddress = "inj...";

const vouchers = await chainGrpcPermissionsApi.fetchVouchersForAddress(
  injectiveAddress
);

console.log(vouchers);
```