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OpenAPI Specification

openapi: 3.2.0
info:
  title: smolvm Execution API
  description: OCI-native microVM runtime API for managing sandboxes, containers, images, and microvms.
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  version: 0.1.6
tags:
- name: Execution
  description: Command execution in sandboxes
paths:
  /api/v1/sandboxes/{id}/exec:
    post:
      tags:
      - Execution
      summary: Execute a command in a sandbox
      description: This executes directly in the VM (not in a container).
      operationId: exec_command
      parameters:
      - name: id
        in: path
        description: Sandbox name
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExecRequest'
        required: true
      responses:
        '200':
          description: Command executed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExecResponse'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
        '404':
          description: Sandbox not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
        '500':
          description: Execution failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
  /api/v1/sandboxes/{id}/run:
    post:
      tags:
      - Execution
      summary: Run a command in an image
      description: This creates a temporary overlay from the image and runs the command.
      operationId: run_command
      parameters:
      - name: id
        in: path
        description: Sandbox name
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RunRequest'
        required: true
      responses:
        '200':
          description: Command executed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExecResponse'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
        '404':
          description: Sandbox not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
        '500':
          description: Execution failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiErrorResponse'
components:
  schemas:
    ApiErrorResponse:
      type: object
      description: API error response.
      required:
      - error
      - code
      properties:
        code:
          type: string
          description: Error code.
          example: NOT_FOUND
        error:
          type: string
          description: Error message.
          example: sandbox 'test' not found
    ExecRequest:
      type: object
      description: Request to execute a command in a sandbox.
      required:
      - command
      properties:
        command:
          type: array
          items:
            type: string
          description: Command and arguments.
          example:
          - echo
          - hello
        env:
          type: array
          items:
            $ref: '#/components/schemas/EnvVar'
          description: Environment variables.
        timeoutSecs:
          type:
          - integer
          - 'null'
          format: int64
          description: Timeout in seconds.
          example: 30
          minimum: 0
        workdir:
          type:
          - string
          - 'null'
          description: Working directory.
          example: /workspace
    ExecResponse:
      type: object
      description: Command execution result.
      required:
      - exitCode
      - stdout
      - stderr
      properties:
        exitCode:
          type: integer
          format: int32
          description: Exit code.
          example: 0
        stderr:
          type: string
          description: Standard error.
          example: ''
        stdout:
          type: string
          description: Standard output.
          example: 'hello

            '
    RunRequest:
      type: object
      description: Request to run a command in an image.
      required:
      - image
      - command
      properties:
        command:
          type: array
          items:
            type: string
          description: Command and arguments.
          example:
          - python
          - -c
          - print('hello')
        env:
          type: array
          items:
            $ref: '#/components/schemas/EnvVar'
          description: Environment variables.
        image:
          type: string
          description: Image to run in.
          example: python:3.12-alpine
        timeoutSecs:
          type:
          - integer
          - 'null'
          format: int64
          description: Timeout in seconds.
          minimum: 0
        workdir:
          type:
          - string
          - 'null'
          description: Working directory.
    EnvVar:
      type: object
      description: Environment variable.
      required:
      - name
      - value
      properties:
        name:
          type: string
          description: Variable name.
          example: MY_VAR
        value:
          type: string
          description: Variable value.
          example: my_value