computer-mcp

Shell-box MCP for context_agent: create a Docker session and run commands in it.

Tools

Tool	Args	Behavior
computer_create	image (optional)	Start a long-running container; return session_id
computer_exec	session_id, command, optional workdir	docker exec in that container

Call computer_create once per chat (or again if computer_exec reports the session is dead). Pass the returned session_id to every computer_exec. Idle sessions are removed after 24 hours.

Setup with Nextcloud

Requires the external Docker network nextcloud_docker (nextcloud-docker-dev).

cp .env.example .env
# set COMPUTER_MCP_TOKEN to a long random secret

docker compose up -d --build

In Context Agent admin settings, enable the MCP Server tool category and set MCP Config to the same secret:

{
  "computer": {
    "url": "http://computer-mcp-dind:8765/mcp",
    "transport": "streamable_http",
    "headers": {
      "Authorization": "Bearer YOUR_LONG_RANDOM_SECRET"
    }
  }
}