> ## Documentation Index
> Fetch the complete documentation index at: https://trigger-v3-fix-additional-files.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# io.registerTrigger()

> `io.registerTrigger()` allows you to register a [DynamicTrigger](/sdk/dynamictrigger) with the specified trigger data.

<Warning>
  This has been deprecated in favor of [DynamicTrigger.register](/sdk/dynamictrigger/register)
</Warning>

## Parameters

<Snippet file="stable-key-param.mdx" />

<ResponseField name="dynamicTrigger" type="DynamicTrigger" required>
  A [DynamicTrigger](/sdk/dynamictrigger) that will trigger any Jobs it's attached.
</ResponseField>

<ResponseField name="id" type="string" required>
  A unique id for the registration. This is used to identify and unregister later.
</ResponseField>

<ResponseField name="params" type="object" required>
  The params for the DynamicTrigger. These will vary depending on the type of the DynamicTrigger.
</ResponseField>

## Returns

A Promise that resolves to an object with the following fields:

<ResponseField name="id" type="string" required>
  A unique id for the registration. This is used to identify and unregister later.
</ResponseField>

<ResponseField name="key" type="string" required>
  The key of the registration.
</ResponseField>

## Example

```ts
//1. create a DynamicTrigger
const dynamicOnIssueOpenedTrigger = client.defineDynamicTrigger({
  id: "github-issue-opened",
  event: events.onIssueOpened,
  source: github.sources.repo,
});

//2. create a Job that is attached to the dynamic trigger
client.defineJob({
  id: "listen-for-dynamic-trigger",
  name: "Listen for dynamic trigger",
  version: "0.1.1",
  trigger: dynamicOnIssueOpenedTrigger,
  integrations: {
    slack,
  },
  run: async (payload, io, ctx) => {
    await io.slack.postMessage("Slack 📝", {
      text: `New Issue opened on repo: ${payload.issue.html_url}. \n\n${JSON.stringify(ctx)}`,
      channel: "C04GWUTDC3W",
    });
  },
});

client.defineJob({
  id: "new-repo",
  name: "New repo",
  version: "0.1.1",
  trigger: github.triggers.org({
    event: events.onNewRepository,
    org: "triggerdotdev",
  }),
  run: async (payload, io, ctx) => {
    //3. Register the dynamic trigger so you get notified when an issue is opened
    return await io.registerTrigger(
      "register-repo",
      dynamicOnIssueOpenedTrigger,
      payload.repository.name,
      {
        owner: payload.repository.owner.login,
        repo: payload.repository.name,
      }
    );
  },
});
```