> ## Documentation Index
> Fetch the complete documentation index at: https://vastai-80aa3a82-auto-openapi-preview-pr-5002.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Update User Webhook

> Update an existing webhook for the authenticated user, changing its URL, event subscriptions, or display name.



## OpenAPI

````yaml /api-reference/openapi.yaml put /api/v0/webhooks/{id}
openapi: 3.1.0
info:
  title: Vast.ai API
  description: >-
    Vast.ai REST API for managing GPU cloud instances, machine operations, and
    AI/ML workflows.


    ## AI Agent Quick-Start


    Install the CLI skill for your agent (Claude Code, Cursor, Windsurf, etc.):
      npx skills add vast-ai/vast-cli

    CLI reference:
    https://raw.githubusercontent.com/vast-ai/vast-cli/master/vastai/SKILL.md

    SDK reference:
    https://raw.githubusercontent.com/vast-ai/vast-cli/master/vastai_sdk/SKILL.md


    ## Auth

    All endpoints require `Authorization: Bearer $VAST_API_KEY`.

    Get your key at: https://cloud.vast.ai/manage-keys/


    ## Key Quirks

    - `gpu_ram` in CLI = GB; in REST API = MB (CLI auto-converts)

    - SSH keys must be registered BEFORE creating an instance (VM: no recovery;
    Docker: can add post-create)

    - `onstart` field is limited to 4048 characters -- gzip+base64 for longer
    scripts

    - `POST /api/v0/asks/{id}/` (create instance) returns `new_contract` as the
    instance ID, not `id`

    - Poll trap: if `actual_status` becomes `exited`, `unknown`, or `offline` it
    will never reach `running` -- destroy and retry
  version: 1.0.0
  contact:
    name: Vast.ai Support
    url: https://discord.gg/vast
  license:
    name: Vast.ai Terms of Service
    url: https://vast.ai/terms/
servers:
  - url: https://console.vast.ai
    description: Production server
security:
  - BearerAuth: []
paths:
  /api/v0/webhooks/{id}:
    put:
      tags:
        - Accounts
      summary: Update User Webhook
      description: >-
        Update an existing webhook for the authenticated user, changing its URL,
        event subscriptions, or display name.
      operationId: updateUserWebhook
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: integer
          description: Unique identifier of the webhook to update.
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                webhook_url:
                  type: string
                  description: >-
                    New HTTPS destination URL for event delivery; must satisfy
                    the same validation rules as creation. Optional if
                    event_types or name is provided.
                  example: https://example.com/new-hook
                event_types:
                  type: array
                  description: >-
                    Replacement list of event slug subscriptions; must be
                    non-empty if provided.
                  example:
                    - low_disk_space
                name:
                  type: string
                  description: >-
                    New optional display label for the webhook (max 120
                    characters).
                  example: Updated name
      responses:
        '200':
          description: >-
            Success; returns {success: true, webhook: object,
            enabled_notification_preferences: list}
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    description: Always true on success.
                  webhook:
                    type: object
                    description: >-
                      Updated webhook object with id, user_id, name,
                      webhook_url, event_types, created_at, and updated_at.
                    properties:
                      id:
                        type: integer
                        description: Webhook ID.
                      user_id:
                        type: integer
                        description: Owning user ID.
                      name:
                        type: string
                        description: Optional display name.
                      webhook_url:
                        type: string
                        description: The HTTPS endpoint URL.
                      event_types:
                        type: array
                        items:
                          type: string
                        description: Subscribed event type slugs.
                      created_at:
                        type: number
                        description: Unix timestamp of creation.
                      updated_at:
                        type: number
                        description: Unix timestamp of last update.
                  enabled_notification_preferences:
                    type: array
                    items:
                      type: string
                    description: >-
                      Preference keys auto-enabled for webhook delivery as a
                      result of this update.
        '400':
          description: >-
            Bad request; possible messages: 'At least one of webhook_url,
            event_types, or name is required', URL/event_types validation
            errors, 'This webhook URL is already registered'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: >-
            Webhook not found; returns {success: false, msg: 'Webhook not
            found'}
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - BearerAuth: []
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
        msg:
          type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: API key must be provided in the Authorization header

````