---
title: "Launch Sandbox Instance"
method: POST
path: "/api/v1/runtime/environments/{environment_id}/instances"
tags: ["gateway"]
---

# Launch Sandbox Instance

`POST /api/v1/runtime/environments/{environment_id}/instances`

## Request

- Base URL: `https://api.komos.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.komos.ai/api/v1/runtime/environments/{environment_id}/instances`
- Auth: none declared

## Path parameters

- `environment_id` string, uuid, required

## Request body

- SandboxLaunchRequest
  - `run_id` string, uuid, required
  - `environment_token` string, required
  - `gateway_url` string, required
  - `user_id` string, uuid, nullable
  - `timeout_seconds` number, nullable

## Response `201`

Successful Response

- SandboxHandlePayload
  - `sandbox_id` string, required
  - `kind` string, required
  - `user_id` string, nullable
  - `vnc_ws_url` string, nullable
  - `vnc_port` integer, nullable
  - `project_name` string, nullable
  - `environment_id` string, uuid, nullable
  - `issues` string[]

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/komos/apis/komos-backend.md) · [All operations](https://skmtc.dev/komos/apis/komos-backend/llms.txt) · [OpenAPI document](https://skmtc.dev/komos/apis/komos-backend/revisions/f10e153fab38?raw)