HTTP Toolkit Interceptors API

openapi: 3.2.0
info:
  title: HTTP Toolkit Server client Interceptors API
  description: The backend REST API exposed by the HTTP Toolkit server, used to start and manage the local HTTP/HTTPS proxy, launch intercepted applications, manage interception rules, handle certificate operations, and send requests through the proxy. The server listens on localhost (default port 45456) and uses token-based authentication via the Authorization header.
  version: 1.0.0
  contact:
    name: HTTP Toolkit
    url: https://httptoolkit.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:45456
  description: Local HTTP Toolkit server (default port)
security:
- bearerAuth: []
tags:
- name: Interceptors
  description: Interceptor management for various environments and applications
paths:
  /interceptors:
    get:
      summary: List interceptors
      description: Returns top-level state of all available interceptors, including whether each is activable and currently active. Supports Docker, Android, Python, Ruby, Java, Electron, and JavaScript environments.
      operationId: getInterceptors
      tags:
      - Interceptors
      parameters:
      - $ref: '#/components/parameters/ProxyPort'
      responses:
        '200':
          description: List of interceptors with state
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InterceptorsResponse'
  /interceptors/{id}/metadata:
    get:
      summary: Get detailed interceptor metadata
      description: Returns the complete detailed metadata for a specific interceptor, including all available targets and full configuration details beyond what is returned by the list endpoint.
      operationId: getInterceptorMetadata
      tags:
      - Interceptors
      parameters:
      - $ref: '#/components/parameters/InterceptorId'
      responses:
        '200':
          description: Detailed interceptor metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InterceptorMetadataResponse'
        '404':
          $ref: '#/components/responses/NotFound'
  /interceptors/{id}/metadata/{subId}:
    get:
      summary: Get sub-interceptor metadata
      description: Returns even more detailed metadata about a specific sub-target within a multi-target interceptor (e.g., a specific browser profile or Android device).
      operationId: getInterceptorSubMetadata
      tags:
      - Interceptors
      parameters:
      - $ref: '#/components/parameters/InterceptorId'
      - name: subId
        in: path
        required: true
        description: Sub-identifier for a specific target within the interceptor
        schema:
          type: string
      responses:
        '200':
          description: Sub-interceptor metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InterceptorMetadataResponse'
        '404':
          $ref: '#/components/responses/NotFound'
  /interceptors/{id}/activate/{proxyPort}:
    post:
      summary: Activate an interceptor
      description: Activates a specific interceptor for the given proxy port, injecting the proxy configuration into the target application or environment. The result may include success:false for non-critical failures (e.g., Chrome prompt-to-quit scenarios) without throwing an error.
      operationId: activateInterceptor
      tags:
      - Interceptors
      parameters:
      - $ref: '#/components/parameters/InterceptorId'
      - name: proxyPort
        in: path
        required: true
        description: Port number that the proxy is listening on
        schema:
          type: integer
          minimum: 1
          maximum: 65535
      requestBody:
        description: Optional interceptor-specific activation options
        required: false
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
              description: Interceptor-specific activation options (varies by interceptor)
      responses:
        '200':
          description: Activation result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ActivationResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    ErrorResponse:
      type: object
      required:
      - error
      properties:
        error:
          type: string
          description: Human-readable error message
    InterceptorMetadataResponse:
      type: object
      required:
      - interceptorMetadata
      properties:
        interceptorMetadata:
          type: object
          additionalProperties: true
          description: Detailed metadata for the interceptor, structure varies by interceptor type
    Interceptor:
      type: object
      required:
      - id
      - version
      - isActivable
      - isActive
      properties:
        id:
          type: string
          description: Unique identifier of the interceptor
          example: fresh-chrome
        version:
          type: string
          description: Version of the interceptor
          example: 1.0.0
        isActivable:
          type: boolean
          description: Whether this interceptor can be activated on this system
        isActive:
          type: boolean
          description: Whether this interceptor is currently active
        metadata:
          type: object
          additionalProperties: true
          description: Summary metadata specific to this interceptor type
    InterceptorsResponse:
      type: object
      required:
      - interceptors
      properties:
        interceptors:
          type: array
          items:
            $ref: '#/components/schemas/Interceptor'
    ActivationResponse:
      type: object
      required:
      - result
      properties:
        result:
          type: object
          additionalProperties: true
          description: 'Activation result. May contain success:false for non-critical failures (e.g., Chrome confirmation dialogs) without an HTTP error.

            '
  parameters:
    ProxyPort:
      name: proxyPort
      in: query
      required: false
      description: 'The port number the Mockttp proxy is listening on. Optional — omit to query data before the proxy has started for potentially faster setup.

        '
      schema:
        type: integer
        minimum: 1
        maximum: 65535
    InterceptorId:
      name: id
      in: path
      required: true
      description: Unique identifier of the interceptor
      schema:
        type: string
  responses:
    BadRequest:
      description: Bad request — missing or invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Token-based authentication using a server-generated bearer token