---
title: Event subscriptions
description: Subscribe to Workers AI events using Cloudflare Queues for asynchronous processing.
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://edgetunnel-b2h.pages.dev/workers-ai/llms.txt  
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# Event subscriptions

[Event subscriptions](https://edgetunnel-b2h.pages.dev/queues/event-subscriptions/) allow you to receive messages when events occur across your Cloudflare account. Cloudflare products (e.g., [KV](https://edgetunnel-b2h.pages.dev/kv/), [Workers AI](https://edgetunnel-b2h.pages.dev/workers-ai/), [Workers](https://edgetunnel-b2h.pages.dev/workers/)) can publish structured events to a [queue](https://edgetunnel-b2h.pages.dev/queues/), which you can then consume with Workers or [HTTP pull consumers](https://edgetunnel-b2h.pages.dev/queues/configuration/pull-consumers/) to build custom workflows, integrations, or logic.

For more information on [Event Subscriptions](https://edgetunnel-b2h.pages.dev/queues/event-subscriptions/), refer to the [management guide](https://edgetunnel-b2h.pages.dev/queues/event-subscriptions/manage-event-subscriptions/).

## Available Workers AI events

#### `batch.queued`

Triggered when a batch request is queued.

**Example:**

```json
{
  "type": "cf.workersAi.model.batch.queued",
  "source": {
    "type": "workersAi.model",
    "modelName": "@cf/baai/bge-base-en-v1.5"
  },
  "payload": {
    "requestId": "req-12345678-90ab-cdef-1234-567890abcdef"
  },
  "metadata": {
    "accountId": "f9f79265f388666de8122cfb508d7776",
    "eventSubscriptionId": "1830c4bb612e43c3af7f4cada31fbf3f",
    "eventSchemaVersion": 1,
    "eventTimestamp": "2025-05-01T02:48:57.132Z"
  }
}
```

#### `batch.succeeded`

Triggered when a batch request has completed.

**Example:**

```json
{
  "type": "cf.workersAi.model.batch.succeeded",
  "source": {
    "type": "workersAi.model",
    "modelName": "@cf/baai/bge-base-en-v1.5"
  },
  "payload": {
    "requestId": "req-12345678-90ab-cdef-1234-567890abcdef"
  },
  "metadata": {
    "accountId": "f9f79265f388666de8122cfb508d7776",
    "eventSubscriptionId": "1830c4bb612e43c3af7f4cada31fbf3f",
    "eventSchemaVersion": 1,
    "eventTimestamp": "2025-05-01T02:48:57.132Z"
  }
}
```

#### `batch.failed`

Triggered when a batch request has failed.

**Example:**

```json
{
  "type": "cf.workersAi.model.batch.failed",
  "source": {
    "type": "workersAi.model",
    "modelName": "@cf/baai/bge-base-en-v1.5"
  },
  "payload": {
    "requestId": "req-12345678-90ab-cdef-1234-567890abcdef",
    "message": "Model execution failed",
    "internalCode": 5001,
    "httpCode": 500
  },
  "metadata": {
    "accountId": "f9f79265f388666de8122cfb508d7776",
    "eventSubscriptionId": "1830c4bb612e43c3af7f4cada31fbf3f",
    "eventSchemaVersion": 1,
    "eventTimestamp": "2025-05-01T02:48:57.132Z"
  }
}
```

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```