> ## 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.sendEvent()

> `io.sendEvent()` allows you to send an event from inside a Job run. The sent event will trigger any Jobs that are listening for that event (based on the name).

If you want to send an event from outside a run (e.g. just from your backend) you should use [client.sendEvent()](/sdk/triggerclient/instancemethods/sendevent) instead.

Use [eventTrigger()](/sdk/eventtrigger) on a Job to listen for events.

For multiple events, use [io.sendEvents()](/sdk/io/sendevents) instead.

## Parameters

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

<Snippet file="send-event-params.mdx" />

## Returns

<Snippet file="send-event-return.mdx" />

<RequestExample>
  ```ts Send an event
  //this Job sends an event that triggers the second job
  client.defineJob({
    id: "job-1",
    name: "First job",
    version: "0.0.1",
    trigger: cronTrigger({
      cron: "0 9 * * *", // 9am every day (UTC)
    }),
    run: async (payload, io, ctx) => {
      //sends the "new.user" event with a userId in the payload
      await io.sendEvent("send-event", {
        name: "new.user",
        payload: {
          userId: "u_1234567890",
        },
      });
    },
  });

  client.defineJob({
    id: "job-2",
    name: "Second job",
    version: "0.0.1",
    //subscribes to the "new.user" event
    trigger: eventTrigger({
      name: "new.user",
      schema: z.object({
        userId: z.string(),
      }),
    }),
    run: async (payload, io, ctx) => {
      await io.logger.log("New user created", { userId: payload.userId });
      //do stuff with the new user
    },
  });
  ```
</RequestExample>