> ## Documentation Index
> Fetch the complete documentation index at: https://trigger-docs-batch-trigger-v2.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# React hooks

> Using the Trigger.dev v3 API from your React application.

Our react hooks package provides a set of hooks that make it easy to interact with the Trigger.dev API from your React application, using our [frontend API](/frontend/overview). You can use these hooks to fetch runs, batches, and subscribe to real-time updates.

## Installation

Install the `@trigger.dev/react-hooks` package in your project:

<CodeGroup>
  ```bash npm
  npm add @trigger.dev/react-hooks
  ```

  ```bash pnpm
  pnpm add @trigger.dev/react-hooks
  ```

  ```bash yarn
  yarn install @trigger.dev/react-hooks
  ```
</CodeGroup>

## Authentication

All hooks accept an optional last argument `options` that accepts an `accessToken` param, which should be a valid Public Access Token. Learn more about [generating tokens in the frontend guide](/frontend/overview).

```tsx
import { useRealtimeRun } from "@trigger.dev/react-hooks";

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, error } = useRealtimeRun(runId, {
    accessToken: publicAccessToken, // This is required
    baseURL: "https://your-trigger-dev-instance.com", // optional, only needed if you are self-hosting Trigger.dev
  });

  // ...
}
```

Alternatively, you can use our `TriggerAuthContext` provider

```tsx
import { TriggerAuthContext } from "@trigger.dev/react-hooks";

export function SetupTrigger({ publicAccessToken }: { publicAccessToken: string }) {
  return (
    <TriggerAuthContext.Provider value={{ accessToken: publicAccessToken }}>
      <MyComponent />
    </TriggerAuthContext.Provider>
  );
}
```

Now children components can use the hooks to interact with the Trigger.dev API. If you are self-hosting Trigger.dev, you can provide the `baseURL` to the `TriggerAuthContext` provider.

```tsx
import { TriggerAuthContext } from "@trigger.dev/react-hooks";

export function SetupTrigger({ publicAccessToken }: { publicAccessToken: string }) {
  return (
    <TriggerAuthContext.Provider
      value={{
        accessToken: publicAccessToken,
        baseURL: "https://your-trigger-dev-instance.com",
      }}
    >
      <MyComponent />
    </TriggerAuthContext.Provider>
  );
}
```

### Next.js and client components

If you are using Next.js with the App Router, you have to make sure the component that uses the `TriggerAuthContext` is a client component. So for example, the following code will not work:

```tsx app/page.tsx
import { TriggerAuthContext } from "@trigger.dev/react-hooks";

export default function Page() {
  return (
    <TriggerAuthContext.Provider value={{ accessToken: "your-access-token" }}>
      <MyComponent />
    </TriggerAuthContext.Provider>
  );
}
```

That's because `Page` is a server component and the `TriggerAuthContext.Provider` uses client-only react code. To fix this, wrap the `TriggerAuthContext.Provider` in a client component:

```ts components/TriggerProvider.tsx
"use client";

import { TriggerAuthContext } from "@trigger.dev/react-hooks";

export function TriggerProvider({
  accessToken,
  children,
}: {
  accessToken: string;
  children: React.ReactNode;
}) {
  return (
    <TriggerAuthContext.Provider
      value={{
        accessToken,
      }}
    >
      {children}
    </TriggerAuthContext.Provider>
  );
}
```

### Passing the token to the frontend

Techniques for passing the token to the frontend vary depending on your setup. Here are a few ways to do it for different setups:

#### Next.js App Router

If you are using Next.js with the App Router and you are triggering a task from a server action, you can use cookies to store and pass the token to the frontend.

```tsx actions/trigger.ts
"use server";

import { tasks } from "@trigger.dev/sdk/v3";
import type { exampleTask } from "@/trigger/example";
import { redirect } from "next/navigation";
import { cookies } from "next/headers";

export async function startRun() {
  const handle = await tasks.trigger<typeof exampleTask>("example", { foo: "bar" });

  // Set the auto-generated publicAccessToken in a cookie
  cookies().set("publicAccessToken", handle.publicAccessToken);

  redirect(`/runs/${handle.id}`);
}
```

Then in the `/runs/[id].tsx` page, you can read the token from the cookie and pass it to the `TriggerProvider`.

```tsx pages/runs/[id].tsx
import { TriggerProvider } from "@/components/TriggerProvider";

export default function RunPage({ params }: { params: { id: string } }) {
  const publicAccessToken = cookies().get("publicAccessToken");

  return (
    <TriggerProvider accessToken={publicAccessToken}>
      <RunDetails id={params.id} />
    </TriggerProvider>
  );
}
```

Instead of a cookie, you could also use a query parameter to pass the token to the frontend:

```tsx actions/trigger.ts
import { tasks } from "@trigger.dev/sdk/v3";
import type { exampleTask } from "@/trigger/example";
import { redirect } from "next/navigation";
import { cookies } from "next/headers";

export async function startRun() {
  const handle = await tasks.trigger<typeof exampleTask>("example", { foo: "bar" });

  redirect(`/runs/${handle.id}?publicAccessToken=${handle.publicAccessToken}`);
}
```

And then in the `/runs/[id].tsx` page:

```tsx pages/runs/[id].tsx
import { TriggerProvider } from "@/components/TriggerProvider";

export default function RunPage({
  params,
  searchParams,
}: {
  params: { id: string };
  searchParams: { publicAccessToken: string };
}) {
  return (
    <TriggerProvider accessToken={searchParams.publicAccessToken}>
      <RunDetails id={params.id} />
    </TriggerProvider>
  );
}
```

Another alternative would be to use a server-side rendered page to fetch the token and pass it to the frontend:

<CodeGroup>
  ```tsx pages/runs/[id].tsx
  import { TriggerProvider } from "@/components/TriggerProvider";
  import { generatePublicAccessToken } from "@/trigger/auth";

  export default async function RunPage({ params }: { params: { id: string } }) {
    // This will be executed on the server only
    const publicAccessToken = await generatePublicAccessToken(params.id);

    return (
      <TriggerProvider accessToken={publicAccessToken}>
        <RunDetails id={params.id} />
      </TriggerProvider>
    );
  }
  ```

  ```tsx trigger/auth.ts
  import { auth } from "@trigger.dev/sdk/v3";

  export async function generatePublicAccessToken(runId: string) {
    return auth.createPublicToken({
      scopes: {
        read: {
          runs: [runId],
        },
      },
      expirationTime: "1h",
    });
  }
  ```
</CodeGroup>

## SWR vs Realtime hooks

We offer two "styles" of hooks: SWR and Realtime. The SWR hooks use the [swr](https://swr.vercel.app/) library to fetch data once and cache it. The Realtime hooks use [Trigger.dev realtime](/realtime) to subscribe to updates in real-time.

<Note>
  It can be a little confusing which one to use because [swr](https://swr.vercel.app/) can also be
  configured to poll for updates. But because of rate-limits and the way the Trigger.dev API works,
  we recommend using the Realtime hooks for most use-cases.
</Note>

All hooks named `useRealtime*` are Realtime hooks, and all hooks named `use*` are SWR hooks.

## Realtime hooks

### useRealtimeRun

The `useRealtimeRun` hook allows you to subscribe to a run by its ID.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeRun } from "@trigger.dev/react-hooks";

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, error } = useRealtimeRun(runId, {
    accessToken: publicAccessToken,
  });

  if (error) return <div>Error: {error.message}</div>;

  return <div>Run: {run.id}</div>;
}
```

To correctly type the run's payload and output, you can provide the type of your task to the `useRealtimeRun` hook:

```tsx
import { useRealtimeRun } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, error } = useRealtimeRun<typeof myTask>(runId, {
    accessToken: publicAccessToken,
  });

  if (error) return <div>Error: {error.message}</div>;

  // Now run.payload and run.output are correctly typed

  return <div>Run: {run.id}</div>;
}
```

See our [Realtime documentation](/realtime) for more information about the type of the run object and more.

### useRealtimeRunsWithTag

The `useRealtimeRunsWithTag` hook allows you to subscribe to multiple runs with a specific tag.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeRunsWithTag } from "@trigger.dev/react-hooks";

export function MyComponent({ tag }: { tag: string }) {
  const { runs, error } = useRealtimeRunsWithTag(tag);

  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      {runs.map((run) => (
        <div key={run.id}>Run: {run.id}</div>
      ))}
    </div>
  );
}
```

To correctly type the runs payload and output, you can provide the type of your task to the `useRealtimeRunsWithTag` hook:

```tsx
import { useRealtimeRunsWithTag } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

export function MyComponent({ tag }: { tag: string }) {
  const { runs, error } = useRealtimeRunsWithTag<typeof myTask>(tag);

  if (error) return <div>Error: {error.message}</div>;

  // Now runs[i].payload and runs[i].output are correctly typed

  return (
    <div>
      {runs.map((run) => (
        <div key={run.id}>Run: {run.id}</div>
      ))}
    </div>
  );
}
```

If `useRealtimeRunsWithTag` could return multiple different types of tasks, you can pass a union of all the task types to the hook:

```tsx
import { useRealtimeRunsWithTag } from "@trigger.dev/react-hooks";
import type { myTask1, myTask2 } from "@/trigger/myTasks";

export function MyComponent({ tag }: { tag: string }) {
  const { runs, error } = useRealtimeRunsWithTag<typeof myTask1 | typeof myTask2>(tag);

  if (error) return <div>Error: {error.message}</div>;

  // You can narrow down the type of the run based on the taskIdentifier
  for (const run of runs) {
    if (run.taskIdentifier === "my-task-1") {
      // run is correctly typed as myTask1
    } else if (run.taskIdentifier === "my-task-2") {
      // run is correctly typed as myTask2
    }
  }

  return (
    <div>
      {runs.map((run) => (
        <div key={run.id}>Run: {run.id}</div>
      ))}
    </div>
  );
}
```

See our [Realtime documentation](/realtime) for more information.

### useRealtimeBatch

The `useRealtimeBatch` hook allows you to subscribe to a batch of runs by its the batch ID.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeBatch } from "@trigger.dev/react-hooks";

export function MyComponent({ batchId }: { batchId: string }) {
  const { runs, error } = useRealtimeBatch(batchId);

  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      {runs.map((run) => (
        <div key={run.id}>Run: {run.id}</div>
      ))}
    </div>
  );
}
```

See our [Realtime documentation](/realtime) for more information.

### useRealtimeRunWithStreams

The `useRealtimeRunWithStreams` hook allows you to subscribe to a run by its ID and also receive any streams that are emitted by the task. See our [Realtime documentation](/realtime#streams) for more information about emitting streams from a task.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeRunWithStreams } from "@trigger.dev/react-hooks";

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, streams, error } = useRealtimeRunWithStreams(runId, {
    accessToken: publicAccessToken,
  });

  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      <div>Run: {run.id}</div>
      <div>
        {Object.keys(streams).map((stream) => (
          <div key={stream}>Stream: {stream}</div>
        ))}
      </div>
    </div>
  );
}
```

You can provide the type of the streams to the `useRealtimeRunWithStreams` hook:

```tsx
import { useRealtimeRunWithStreams } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

type STREAMS = {
  openai: string; // this is the type of each "part" of the stream
};

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, streams, error } = useRealtimeRunWithStreams<typeof myTask, STREAMS>(runId, {
    accessToken: publicAccessToken,
  });

  if (error) return <div>Error: {error.message}</div>;

  const text = streams.openai?.map((part) => part).join("");

  return (
    <div>
      <div>Run: {run.id}</div>
      <div>{text}</div>
    </div>
  );
}
```

As you can see above, each stream is an array of the type you provided, keyed by the stream name. If instead of a pure text stream you have a stream of objects, you can provide the type of the object:

```tsx
import type { TextStreamPart } from "ai";
import type { myTask } from "@/trigger/myTask";

type STREAMS = { openai: TextStreamPart<{}> };

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { run, streams, error } = useRealtimeRunWithStreams<typeof myTask, STREAMS>(runId, {
    accessToken: publicAccessToken,
  });

  if (error) return <div>Error: {error.message}</div>;

  const text = streams.openai
    ?.filter((stream) => stream.type === "text-delta")
    ?.map((part) => part.text)
    .join("");

  return (
    <div>
      <div>Run: {run.id}</div>
      <div>{text}</div>
    </div>
  );
}
```

### Common options

#### enabled

You can pass the `enabled` option to the Realtime hooks to enable or disable the subscription.

```tsx
import { useRealtimeRun } from "@trigger.dev/react-hooks";

export function MyComponent({
  runId,
  publicAccessToken,
  enabled,
}: {
  runId: string;
  publicAccessToken: string;
  enabled: boolean;
}) {
  const { run, error } = useRealtimeRun(runId, {
    accessToken: publicAccessToken,
    enabled,
  });

  if (error) return <div>Error: {error.message}</div>;

  return <div>Run: {run.id}</div>;
}
```

This allows you to conditionally disable using the hook based on some state.

#### id

You can pass the `id` option to the Realtime hooks to change the ID of the subscription.

```tsx
import { useRealtimeRun } from "@trigger.dev/react-hooks";

export function MyComponent({
  id,
  runId,
  publicAccessToken,
  enabled,
}: {
  id: string;
  runId: string;
  publicAccessToken: string;
  enabled: boolean;
}) {
  const { run, error } = useRealtimeRun(runId, {
    accessToken: publicAccessToken,
    enabled,
    id,
  });

  if (error) return <div>Error: {error.message}</div>;

  return <div>Run: {run.id}</div>;
}
```

This allows you to change the ID of the subscription based on some state. Passing in a different ID will unsubscribe from the current subscription and subscribe to the new one (and remove any cached data).

#### experimental\_throttleInMs

The `*withStreams` variants of the Realtime hooks accept an `experimental_throttleInMs` option to throttle the updates from the server. This can be useful if you are getting too many updates and want to reduce the number of updates.

```tsx
import { useRealtimeRunsWithStreams } from "@trigger.dev/react-hooks";

export function MyComponent({
  runId,
  publicAccessToken,
}: {
  runId: string;
  publicAccessToken: string;
}) {
  const { runs, error } = useRealtimeRunsWithStreams(tag, {
    accessToken: publicAccessToken,
    experimental_throttleInMs: 1000, // Throttle updates to once per second
  });

  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      {runs.map((run) => (
        <div key={run.id}>Run: {run.id}</div>
      ))}
    </div>
  );
}
```

## SWR Hooks

### useRun

The `useRun` hook allows you to fetch a run by its ID.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRun } from "@trigger.dev/react-hooks";

export function MyComponent({ runId }: { runId: string }) {
  const { run, error, isLoading } = useRun(runId);

  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>Error: {error.message}</div>;

  return <div>Run: {run.id}</div>;
}
```

The `run` object returned is the same as the [run object](/management/runs/retrieve) returned by the Trigger.dev API. To correctly type the run's payload and output, you can provide the type of your task to the `useRun` hook:

```tsx
import { useRun } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

export function MyComponent({ runId }: { runId: string }) {
  const { run, error, isLoading } = useRun<typeof myTask>(runId, {
    refreshInterval: 0, // Disable polling
  });

  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>Error: {error.message}</div>;

  // Now run.payload and run.output are correctly typed

  return <div>Run: {run.id}</div>;
}
```

### Common options

You can pass the following options to the all SWR hooks:

<ParamField path="revalidateOnFocus" type="boolean">
  Revalidate the data when the window regains focus.
</ParamField>

<ParamField path="revalidateOnReconnect" type="boolean">
  Revalidate the data when the browser regains a network connection.
</ParamField>

<ParamField path="refreshInterval" type="number">
  Poll for updates at the specified interval (in milliseconds). Polling is not recommended for most
  use-cases. Use the Realtime hooks instead.
</ParamField>

### Common return values

<ResponseField name="error" type="Error">
  An error object if an error occurred while fetching the data.
</ResponseField>

<ResponseField name="isLoading" type="boolean">
  A boolean indicating if the data is currently being fetched.
</ResponseField>

<ResponseField name="isValidating" type="boolean">
  A boolean indicating if the data is currently being revalidated.
</ResponseField>

<ResponseField name="isError" type="boolean">
  A boolean indicating if an error occurred while fetching the data.
</ResponseField>

## Trigger Hooks

We provide a set of hooks that can be used to trigger tasks from your frontend application. You'll need to generate a Public Access Token with `write` permissions to use these hooks. See our [frontend guide](/frontend/overview#write-scopes) for more information.

### useTaskTrigger

The `useTaskTrigger` hook allows you to trigger a task from your frontend application.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useTaskTrigger } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

export function MyComponent({ publicAccessToken }: { publicAccessToken: string }) {
  const { submit, handle, error, isLoading } = useTaskTrigger<typeof myTask>("my-task", {
    accessToken: publicAccessToken,
  });

  if (error) {
    return <div>Error: {error.message}</div>;
  }

  if (handle) {
    return <div>Run ID: {handle.id}</div>;
  }

  return (
    <button onClick={() => submit({ foo: "bar" })} disabled={isLoading}>
      {isLoading ? "Loading..." : "Trigger Task"}
    </button>
  );
}
```

### useRealtimeTaskTrigger

The `useRealtimeTaskTrigger` hook allows you to trigger a task from your frontend application and then subscribe to the run in using Realtime:

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeTaskTrigger } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

export function MyComponent({ publicAccessToken }: { publicAccessToken: string }) {
  const { submit, run, error, isLoading } = useRealtimeTaskTrigger<typeof myTask>("my-task", {
    accessToken: publicAccessToken,
  });

  if (error) {
    return <div>Error: {error.message}</div>;
  }

  // This is the realtime run object, which will automatically update when the run changes
  if (run) {
    return <div>Run ID: {run.id}</div>;
  }

  return (
    <button onClick={() => submit({ foo: "bar" })} disabled={isLoading}>
      {isLoading ? "Loading..." : "Trigger Task"}
    </button>
  );
}
```

### useRealtimeTaskTriggerWithStreams

The `useRealtimeTaskTriggerWithStreams` hook allows you to trigger a task from your frontend application and then subscribe to the run in using Realtime, and also receive any streams that are emitted by the task.

```tsx
"use client"; // This is needed for Next.js App Router or other RSC frameworks

import { useRealtimeTaskTriggerWithStreams } from "@trigger.dev/react-hooks";
import type { myTask } from "@/trigger/myTask";

type STREAMS = {
  openai: string; // this is the type of each "part" of the stream
};

export function MyComponent({ publicAccessToken }: { publicAccessToken: string }) {
  const { submit, run, streams, error, isLoading } = useRealtimeTaskTriggerWithStreams<
    typeof myTask,
    STREAMS
  >("my-task", {
    accessToken: publicAccessToken,
  });

  if (error) {
    return <div>Error: {error.message}</div>;
  }

  if (streams && run) {
    const text = streams.openai?.map((part) => part).join("");

    return (
      <div>
        <div>Run ID: {run.id}</div>
        <div>{text}</div>
      </div>
    );
  }

  return (
    <button onClick={() => submit({ foo: "bar" })} disabled={isLoading}>
      {isLoading ? "Loading..." : "Trigger Task"}
    </button>
  );
}
```