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Practonaut MCP Server

local only

Practonaut runs on your own machine — the client starts it, so there is no endpoint to ping. 54 installs a week from npm. Last commit 27 Oct 2026.

Local practice gym for AI agents on real apps: practice Excalidraw tasks, get a reproducible score.

Installs per day peak 185 · avg 6
a month agotoday
54
Installs / week
npm · practonaut
0
Stars
12 open issues
27 Oct 2026
Last commit
3 releases in 90 days
Apache-2.0
License
TypeScript

What the code does

We read the source, 7 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

  const r = spawnSync(process.execPath, [join(REPO, 'src/cli/main.ts'), 'pack', join(REPO, 'tasks/excalidraw/world'), '--out', WORLD_PKG], { cwd: REPO, encoding: 'utf8' });
Page executes code built at runtime design/reference/player.html:1064
  function setHTML(el, html) { if (el.innerHTML !== html) { el.innerHTML = html; } }

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add practonaut -- npx -y practonaut
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "practonaut": {
      "command": "npx",
      "args": [
        "-y",
        "practonaut"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.practonaut]
command = "npx"
args = ["-y", "practonaut"]
.cursor/mcp.json
{
  "mcpServers": {
    "practonaut": {
      "command": "npx",
      "args": [
        "-y",
        "practonaut"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "practonaut": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "practonaut"
      ]
    }
  }
}

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Practonaut — questions

Answers built from our own checks of this server.

Why is there no uptime for Practonaut?
Practonaut runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package practonaut was installed 54 times last week.
How do I connect Practonaut?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls practonaut straight from npm; nothing to host, nothing to sign up for.
How many people use Practonaut?
The npm package practonaut was installed 54 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Practonaut open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 0 stars on GitHub and 12 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.