> ## Documentation Index
> Fetch the complete documentation index at: https://tbd-6fc993ce-hypeship-changelog-august-13.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Execute a command asynchronously



## OpenAPI

````yaml https://api.onkernel.com/spec.json post /browsers/{id}/process/spawn
openapi: 3.1.0
info:
  description: Developer tools and cloud infrastructure for AI agents to use web browsers
  title: Kernel API
  version: 0.1.0
servers:
  - description: API Server
    url: https://api.onkernel.com
security:
  - bearerAuth: []
tags:
  - description: Create and manage browser sessions.
    name: Browsers
  - description: Control mouse, keyboard, and screen on the browser instance.
    name: Browser Computer Controls
  - description: Execute Playwright code against the browser instance.
    name: Browser Playwright
  - description: Read, write, and manage files on the browser instance.
    name: Browser Filesystem
  - description: Execute and manage processes on the browser instance.
    name: Browser Processes
  - description: Record and manage browser session video replays.
    name: Browser Replays
  - description: Stream logs from the browser instance.
    name: Browser Logs
  - description: Stream live telemetry events from a browser session.
    name: Browser Telemetry
  - description: Create, list, retrieve, and delete browser profiles.
    name: Profiles
  - description: Create and manage proxy configurations for routing browser traffic.
    name: Proxies
  - description: Create, list, retrieve, and delete browser extensions.
    name: Extensions
  - description: Create and manage browser pools for acquiring and releasing browsers.
    name: Browser Pools
  - description: Inspect the identity and authorization context for the current request.
    name: Authentication
  - description: >-
      Create and manage auth connections for automated credential capture and
      login.
    name: Managed Auth
  - description: Create and manage credentials for authentication.
    name: Credentials
  - description: Configure external credential providers like 1Password.
    name: Credential Providers
  - description: List applications and versions.
    name: Apps
  - description: Create and manage app deployments and stream deployment events.
    name: Deployments
  - description: Invoke actions and stream or query invocation status and events.
    name: Invocations
  - description: Read and manage organization-level limits.
    name: Organization
  - description: |
      Create and manage projects for resource isolation within an organization.
      When projects are disabled for the organization, project operations return
      `404` with code `projects_disabled`.
    name: Projects
  - description: Create and manage API keys for organization and project-scoped access.
    name: API Keys
  - description: Read audit log records for the authenticated organization.
    name: Audit Logs
  - description: Resolve browser and proxy recommendations for bot-protected sites.
    name: Site Configs
paths:
  /browsers/{id}/process/spawn:
    post:
      tags:
        - Browser Processes
      summary: Execute a command asynchronously
      operationId: processSpawn
      parameters:
        - description: Browser session ID
          in: path
          name: id
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ProcessSpawnRequest'
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProcessSpawnResult'
          description: Spawned
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalError'
      security:
        - bearerAuth: []
components:
  schemas:
    ProcessSpawnRequest:
      allOf:
        - $ref: '#/components/schemas/ProcessExecRequest'
        - properties:
            allocate_tty:
              default: false
              description: Allocate a pseudo-terminal (PTY) for interactive shells.
              type: boolean
            cols:
              description: Initial terminal columns. Only used when allocate_tty is true.
              maximum: 65535
              minimum: 1
              type: integer
            rows:
              description: Initial terminal rows. Only used when allocate_tty is true.
              maximum: 65535
              minimum: 1
              type: integer
          type: object
    ProcessSpawnResult:
      additionalProperties: false
      description: Information about a spawned process.
      properties:
        pid:
          description: OS process ID.
          type: integer
        process_id:
          description: Server-assigned identifier for the process.
          format: uuid
          type: string
        started_at:
          description: Timestamp when the process started.
          format: date-time
          type: string
      type: object
    ProcessExecRequest:
      additionalProperties: false
      description: Request to execute a command synchronously.
      properties:
        args:
          default: []
          description: Command arguments.
          items:
            type: string
          type: array
        as_root:
          default: false
          description: Run the process with root privileges.
          type: boolean
        as_user:
          description: Run the process as this user.
          nullable: true
          type: string
        command:
          description: Executable or shell command to run.
          type: string
        cwd:
          description: Working directory (absolute path) to run the command in.
          nullable: true
          pattern: ^/.*
          type: string
        env:
          additionalProperties:
            type: string
          default: {}
          description: Environment variables to set for the process.
          type: object
        timeout_sec:
          description: Maximum execution time in seconds.
          nullable: true
          type: integer
      required:
        - command
      type: object
    Error:
      properties:
        code:
          description: Application-specific error code (machine-readable)
          example: bad_request
          type: string
        details:
          description: Additional error details (for multiple errors)
          items:
            $ref: '#/components/schemas/ErrorDetail'
          type: array
        inner_error:
          $ref: '#/components/schemas/ErrorDetail'
        message:
          description: Human-readable error description for debugging
          example: 'Missing required field: app_name'
          type: string
      required:
        - code
        - message
      type: object
    ErrorDetail:
      properties:
        code:
          description: Lower-level error code providing more specific detail
          example: invalid_input
          type: string
        message:
          description: Further detail about the error
          example: Provided version string is not semver compliant
          type: string
      type: object
  responses:
    BadRequest:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Bad Request – invalid input
    NotFound:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Resource not found
    InternalError:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Internal Server Error
  securitySchemes:
    bearerAuth:
      scheme: bearer
      type: http

````