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

# Flush Application Queue

> Flushes all pending requests from an application's queue.

**Authentication:** Required via API key

**Idempotency:**
- Optional `Idempotency-Key` header prevents duplicate flushes on retries
- Responses cached for 10 minutes per unique key

**Use Cases:**
- Clear stuck or outdated requests from the queue
- Reset queue state during development or testing
- Cancel all pending requests for an application

**Important:**
- This operation is irreversible
- All pending requests in the queue will be cancelled
- Requests already being processed will not be affected



## OpenAPI

````yaml /api-reference/platform-apis/openapi/v1.json delete /serverless/apps/{owner}/{name}/queue
openapi: 3.1.0
info:
  title: Platform APIs
  version: v1
  description: fal REST API for programmatic access to platform resources.
servers:
  - url: https://api.fal.ai/v1
    description: Production server
security: []
paths:
  /serverless/apps/{owner}/{name}/queue:
    delete:
      tags:
        - Serverless
        - Apps
      summary: Flush Application Queue
      description: >-
        Flushes all pending requests from an application's queue.


        **Authentication:** Required via API key


        **Idempotency:**

        - Optional `Idempotency-Key` header prevents duplicate flushes on
        retries

        - Responses cached for 10 minutes per unique key


        **Use Cases:**

        - Clear stuck or outdated requests from the queue

        - Reset queue state during development or testing

        - Cancel all pending requests for an application


        **Important:**

        - This operation is irreversible

        - All pending requests in the queue will be cancelled

        - Requests already being processed will not be affected
      operationId: serverlessFlushAppQueue
      parameters:
        - schema:
            type: string
            description: Username of the app owner
            example: user_123
          required: true
          description: Username of the app owner
          name: owner
          in: path
        - schema:
            type: string
            description: Application name
            example: my-app
          required: true
          description: Application name
          name: name
          in: path
        - schema:
            type: string
            description: Optional idempotency key for safe request retries
            example: 550e8400-e29b-41d4-a716-446655440000
          required: false
          description: Optional idempotency key for safe request retries
          name: Idempotency-Key
          in: header
      responses:
        '204':
          description: Queue flushed successfully
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: validation_error
                  message: Invalid request parameters
        '401':
          description: Authentication required
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: authorization_error
                  message: Authentication required
        '403':
          description: Access denied
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: authorization_error
                  message: Access denied
        '404':
          description: Resource not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: not_found
                  message: Resource not found
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: rate_limited
                  message: Rate limit exceeded
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      type:
                        type: string
                        enum:
                          - authorization_error
                          - validation_error
                          - not_found
                          - rate_limited
                          - server_error
                          - not_implemented
                        description: The category of error that occurred
                      message:
                        type: string
                        description: Human-readable error message
                      docs_url:
                        type: string
                        format: uri
                        description: Link to relevant documentation
                      request_id:
                        type: string
                        description: Unique request identifier for debugging
                    required:
                      - type
                      - message
                    description: Error details
                required:
                  - error
                description: Standard error response format
              example:
                error:
                  type: server_error
                  message: An unexpected error occurred
      security:
        - apiKey: []
components:
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: Authorization
      description: >-
        API key must be prefixed with "Key ", e.g. Authorization: Key
        YOUR_API_KEY

````