How do I install Runtime Cloud?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Runtime Cloud need an API key?

No required environment variable is listed on this record.

What transport does Runtime Cloud use?

Runtime Cloud is reached over HTTP.

When was Runtime Cloud last checked?

Last checked 2026-11-08. Linux microVM sandboxes for AI agents: run commands, files, processes, pause and wake.

Runtime Cloud MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://api.withruntime.com/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http com.withruntime-runtime https://api.withruntime.com/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "com.withruntime-runtime": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://api.withruntime.com/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 0.50.0
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

Runtime

The SDKs, CLI, MCP server and agent integrations for Runtime: sandboxes for AI agents. Each sandbox is a Firecracker microVM with its own Linux kernel, started from one call.

npm install withruntime   # TypeScript SDK, the `runtime` CLI and the MCP server
pip install withruntime   # Python SDK, sync and async

import { Sandbox } from "withruntime";

await using sbx = await Sandbox.create();
const result = await sbx.exec("python3 -c 'print(6 * 7)'");
console.log(result.exitCode, result.stdout);

from withruntime import Sandbox

with Sandbox.create() as sbx:
    result = sbx.exec("python3 -c 'print(6 * 7)'")
    print(result.exit_code, result.stdout)

The client reads RUNTIME_API_KEY, or the connection npx withruntime login saved on this machine. A new account starts on a free trial with no card. The quickstart takes it from there.

What is here

Path	What it is
`packages/cloud-sdk`	The TypeScript SDK, the `runtime` CLI and the MCP server: `withruntime` on npm
`sdks/python`	The Python SDK: `withruntime` on PyPI
`sdks/python/integrations/langchain-withruntime`	LangChain and Deep Agents sandbox backend
`sdks/go`, `sdks/java`, `sdks/ruby`	The Go, Java and Ruby SDKs
`integrations/pydantic-ai`, `integrations/google-adk`	Pydantic AI and Google ADK integrations
`integrations/claude-code`, `codex`, `cursor`, `gemini-cli`, `vscode`, `windsurf`	Skills, rules and MCP settings for coding agents
`packages/cloud-guide/docs`	The guides served at withruntime.com/docs, which the SDK tests check samples against

Documentation

Start
TypeScript and Python
CLI and MCP
Frameworks, and moving from E2B or Daytona
Pricing

How Runtime compares

Pages that answer what people ask when choosing a sandbox, each with the providers' published rates and the date they were read:

Best sandbox for AI agents
Alternatives to E2B, Daytona, Modal and Vercel Sandbox
E2B vs Daytona, and every comparison
The agent sandbox price index: every provider's rates, also as CSV and JSON
Sandbox cost calculator and Runtime's pricing

Tests

bun test in packages/cloud-sdk and python3 -m unittest discover -s tests in sdks/python run here as they are. The suites that start Runtime's API server in-process, including all of the Go, Java and Ruby tests, run in Runtime's main repository before each release.

Contributing

Each release copies the SDKs here from Runtime's main repository, so each commit here is one copy, named after the versions in its source; a copy made before those versions reach npm and PyPI says so. Issues are welcome. A pull request is reviewed here and carried into the next release with its author credited.

License

Apache-2.0. See LICENSE.