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Real Linux and Windows desktop VMs for AI agents: exec, files, computer-use and snapshots via MCP.
About
Real Linux and Windows desktop VMs for AI agents: exec, files, computer-use and snapshots via MCP.
Security Report
Valid MCP server (2 strong, 3 medium validity signals). 1 code issue detected. No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 2 finding(s) downgraded by scanner intelligence.
11 files analyzed · 2 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: CAPSULATE_API_KEY
Environment variable: CAPSULATE_BASE_URL
Environment variable: CAPSULATE_TEAM_ID
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-capsulatedev-capsulate": {
"env": {
"CAPSULATE_API_KEY": "your-capsulate-api-key-here",
"CAPSULATE_TEAM_ID": "your-capsulate-team-id-here",
"CAPSULATE_BASE_URL": "your-capsulate-base-url-here"
},
"args": [
"-y",
"@capsulate/mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Capsulate
Real computers for AI agents. A capsule is a full KVM virtual machine, Linux headless, Linux desktop, or Windows Server desktop for invited testers, taken from a warm pool in about two seconds. Your agent gets exec, files, screenshots, the OS accessibility tree (AT-SPI on Linux, UIAutomation on Windows), checkpoint and rollback of the whole machine, and session replay.
This repository is the doorway: everything a developer installs to talk to Capsulate. It is MIT licensed. The engine (the control plane and the node agent) runs on our metal in Helsinki and is not in this repository.
| Package | What it is | Install |
|---|---|---|
@capsulate/sdk | TypeScript client, zero dependencies | npm i @capsulate/sdk |
@capsulate/cli | The cap command line | npm i -g @capsulate/cli |
@capsulate/mcp | MCP server for Claude Desktop, Cursor and any MCP client | npx -y @capsulate/mcp |
@capsulate/ai-tools | Tool packs for the Vercel AI SDK and LangChain | npm i @capsulate/ai-tools |
run-action | GitHub Action: run a step inside a capsule | uses: capsulatedev/run-action@v1 |
Quickstart
You need an API key from the dashboard (Settings, API and Keys). Capsulate is in a private beta; request access at capsulate.dev.
npm i -g @capsulate/cli
cap login --api-key cap_live_...
cap launch -t ubuntu-desktop -s 1c2g --wait
cap exec <id> -- python3 -c "print(6 * 7)"
cap shot <id> -o frame.png
cap capsule destroy <id>
Or from TypeScript:
import { Capsulate } from "@capsulate/sdk";
const cap = new Capsulate({ apiKey: process.env.CAPSULATE_API_KEY });
const box = await cap.capsules.launch({ template: "ubuntu-desktop", size: "1c2g" });
await box.waitUntilActive();
await box.exec(["python3", "main.py"]);
await box.findAndClick({ name: "Save" }); // find the control by name, act, verify
const cp = await box.checkpoint("before-submit"); // whole machine, under a second
await box.destroy();
More in examples/ and at docs.capsulate.dev.
Sizes and pricing
Machines are metered per second. The beta is free; the published rates are on the pricing page. Limits and known issues are listed honestly at docs.capsulate.dev/limits: one compute node in Helsinki today, about ten to fifteen capsules active at the same time, Windows for invited testers only.
Developing
npm ci
npm run build:sdk # the CLI, MCP server and tool packs typecheck against the built SDK types
npm run typecheck
npm run build
npm run build builds the SDK first, then the tool packs, the CLI and the MCP server.
Security
Report vulnerabilities to security@capsulate.dev (see SECURITY.md). Never put a real cap_live_ key in an issue.
License
MIT. Copyright 2026 Milad Djahandide.
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