> ## Documentation Index
> Fetch the complete documentation index at: https://help.withallo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List event types

> Returns the catalog of event topics you can subscribe a webhook to.

<Note>
  **Required scope:** `WEBHOOKS_READ_WRITE`
</Note>

Returns the catalog of event topics you can subscribe a webhook to. See the [Event Catalog](/en/v2/api-reference/webhooks/event-catalog) for payload schemas.


## OpenAPI

````yaml GET /v2/api/webhooks/event_types
openapi: 3.0.3
info:
  title: Allo API
  description: >-
    Allo API provides programmatic access to your Allo account, allowing you to
    manage webhooks, retrieve calls and contacts, and send SMS messages.


    All requests to `/v1/api/**` endpoints automatically go through quota
    checking and scope validation.
  version: 1.0.0
  contact:
    name: Allo Support
servers:
  - url: https://api.withallo.com
    description: Production server
security: []
tags:
  - name: Summary Templates
    description: >-
      Manage call summary templates that control how AI-generated call summaries
      are structured for your team.
  - name: Webhooks
    description: >-
      Manage webhook endpoints to receive real-time notifications about events
      in your Allo account. Each endpoint subscribes to one or more event topics
      and is verified with a signing secret.
  - name: Calls
    description: >-
      Retrieve and search call records with filtering and pagination. Filter
      calls by your Allo phone number.
  - name: Contacts
    description: >-
      Search and retrieve contact information with sorting and pagination.
      Includes engagement level tracking.
  - name: SMS
    description: Send SMS messages to phone numbers using your Allo numbers.
  - name: Phone Numbers
    description: Retrieve information about your Allo phone numbers.
  - name: Analytics
    description: Pre-computed call metrics, team performance, and outbound dial funnel
  - name: CRM
    description: Manage people, companies, and deals in your CRM.
paths:
  /v2/api/webhooks/event_types:
    get:
      tags:
        - Webhooks
      summary: List event types
      description: Returns the catalog of event topics you can subscribe a webhook to.
      operationId: listWebhookEventTypes
      responses:
        '200':
          description: Available event types
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/WebhookEventTypeApiResponse'
              example:
                data:
                  - name: call.received
                    description: Inbound call received
                  - name: sms.sent
                    description: Outbound sms sent
        '401':
          $ref: '#/components/responses/ApiUnauthorized'
        '429':
          $ref: '#/components/responses/ApiRateLimited'
      security:
        - ApiKeyAuth: []
components:
  schemas:
    WebhookEventTypeApiResponse:
      type: object
      properties:
        name:
          type: string
          example: call.received
        description:
          type: string
          example: Inbound call received
    ApiError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
            code:
              type: string
            message:
              type: string
            retryable:
              type: boolean
            request_id:
              type: string
            retry_after_seconds:
              type: integer
              nullable: true
  responses:
    ApiUnauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiRateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization

````