---
title: "Emit a custom event."
method: POST
path: "/ai_assistants/{assistant_id}/emit_event"
tags: ["AI Assistants"]
---

# Emit a custom event.

`POST /ai_assistants/{assistant_id}/emit_event`

## Request

- Base URL: `https://h2ogpte.genai.h2o.ai/api/v1`
- URL: `https://h2ogpte.genai.h2o.ai/api/v1/ai_assistants/{assistant_id}/emit_event`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/h2o/apis/h2ogpte-rest-api/docs/ai_assistants/:assistant_id/emit_event/post.ts> (a function with typed inputs; its response is checked against the schema)

Emits a custom event that wakes subscribed sleeping assistants. Optionally target specific assistants.

## Path parameters

- `assistant_id` string, required

## Request body

- EmitEventRequest
  - `event_type_name` string, required: Name of the event type to emit.
  - `payload` object: Optional event payload data.
  - `target_assistant_ids` string[]: Optional list of specific assistant IDs to target.

## Response `200`

Successful operation

- EmitEventResponse
  - `status` string
  - `woken_count` integer

## Other responses

- `401`: Unauthorized - Invalid or missing API key
- `default`: Unexpected error

## Changes

- **2026-11-06** `a82a117320f4`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/h2o/apis/h2ogpte-rest-api/changes/ai_assistants/:assistant_id/emit_event/post.md)

---

[API](https://skmtc.dev/h2o/apis/h2ogpte-rest-api.md) - [All operations](https://skmtc.dev/h2o/apis/h2ogpte-rest-api/llms.txt) - [OpenAPI document](https://skmtc.dev/h2o/apis/h2ogpte-rest-api/revisions/a82a117320f4?raw)