> ## 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.

# Exchange

Example code snippets to query the exchange module on the chain.

## Using gRPC

### Fetch parameters such as the default spot and derivatives fees/trading rewards

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const moduleParams = await chainGrpcExchangeApi.fetchModuleParams();

console.log(moduleParams);
```

### Fetch the fee discount schedules

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const feeDiscountSchedule =
  await chainGrpcExchangeApi.fetchFeeDiscountSchedule();

console.log(feeDiscountSchedule);
```

### Fetch the fee discounts associated with an injective address

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const injectiveAddress = "inj...";

const feeDiscountAccountInfo =
  await chainGrpcExchangeApi.fetchFeeDiscountAccountInfo(injectiveAddress);

console.log(feeDiscountAccountInfo);
```

### Fetch the details regarding the trading reward campaign, such as the total reward points

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const tradingRewardsCampaign =
  await chainGrpcExchangeApi.fetchTradingRewardsCampaign();

console.log(tradingRewardsCampaign);
```

### Fetch the trading rewards points for an injective address

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const injectiveAddress = "inj...";

const tradeRewardsPoints = await chainGrpcExchangeApi.fetchTradeRewardsPoints(
  injectiveAddress
);

console.log(tradeRewardsPoints);
```

### Fetch the pending trading rewards points for injective addresses

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const injectiveAddresses = ["inj..."];

const pendingTradeRewardsPoints =
  await chainGrpcExchangeApi.fetchPendingTradeRewardPoints(injectiveAddresses);

console.log(pendingTradeRewardsPoints);
```

#### Fetch the current positions, such as subaccountId, marketId, and position

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

// Replace with your own Injective address(es)
const injectiveAddresses = ["inj1..."];

const positions = await chainGrpcExchangeApi.fetchPositions(injectiveAddresses);

console.log(positions);
```

### Fetch the subaccount trade nonce

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

const endpoints = getNetworkEndpoints(Network.Testnet);
const chainGrpcExchangeApi = new ChainGrpcExchangeApi(endpoints.grpc);

const subaccountId = "0x...";

const subaccountTradeNonce =
  await chainGrpcExchangeApi.fetchSubaccountTradeNonce(subaccountId);

console.log(subaccountTradeNonce);
```