E2B Sandbox MCP Server

MCP server for E2B sandbox. MaaS mode uses MaaS E2B proxy and tenant API key.

Config

Environment:

E2B_API_KEY=e2b_xxx
E2B_API_URL=https://maas.example.com/api/e2b

Optional:

E2B_TEMPLATE=code-interpreter
E2B_TIMEOUT=300
E2B_REQUEST_TIMEOUT=60
E2B_VERIFY_SSL=true

Full env list: ENV.md. OpenClaw and Hermes config: INTEGRATION.md.

The SDK derives MaaS data-plane URLs from E2B_API_URL:

• HTTP: {E2B_API_URL}/sandbox-proxy/{sandbox_id}/ports/{port}
• WebSocket: {E2B_API_URL}/ws/sandbox-proxy/{sandbox_id}/ports/{port}

No MaaS /config endpoint is required.

Run

python3.11 -m venv .venv
source .venv/bin/activate
pip install -e .

export E2B_API_KEY=e2b_xxx
export E2B_API_URL=https://maas.example.com/api/e2b

python tests/test_mcp_create_delete.py
python tests/test_mcp_client.py

After install, the server command is maas-e2b-sandbox. For normal installation, use pipx install maas-e2b-sandbox or install with pip inside a virtual environment.

MCP

mcp_servers:
  e2b_sandbox:
    command: maas-e2b-sandbox
    timeout: 180
    env:
      PYTHONUNBUFFERED: "1"
      E2B_API_KEY: e2b_xxx
      E2B_API_URL: https://maas.example.com/api/e2b

Tools

• code_run
• cmd_run, cmd_start, cmd_output, cmd_input, cmd_kill
• file_write, file_read, file_upload, file_download, file_inspect
• create_session, list_sessions, close_session