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Rounder tools MCP Server

by adam-sari Your server? Claim it
local only

Rounder tools runs on your own machine — the client starts it, so there is no endpoint to ping. 194 installs a week from npm. Last commit 29 Oct 2026.

Local PDF, image, archive and video tools for AI assistants. Files never leave your computer.

Installs per day peak 194 · avg 6
a month agotoday
194
Installs / week
npm · @roundertools/mcp
0
Stars
0 open issues
29 Oct 2026
Last commit
from GitHub
MIT
License
TypeScript

What the code does

We read the source, 2 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.

execFileSync(process.execPath, [tsc, '-p', join(here, 'tsconfig.build.json')], { stdio: 'inherit' });
      delete parsed[+bold]; // let a later call retry the download
Executes code built at runtime src/engines/pdf/qpdf.worker.ts:27
    const factory = new Function(`${source}\nreturn Module;`)() as (opts: object) => Promise<Qpdf>;

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 roundertools -- npx -y @roundertools/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "roundertools": {
      "command": "npx",
      "args": [
        "-y",
        "@roundertools/mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.roundertools]
command = "npx"
args = ["-y", "@roundertools/mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "roundertools": {
      "command": "npx",
      "args": [
        "-y",
        "@roundertools/mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "roundertools": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@roundertools/mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: ROUNDERTOOLS_ALLOW (Folders the server may read, as a path list), ROUNDERTOOLS_FFMPEG (Path to ffmpeg, if it isn't on the PATH).

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Rounder tools — questions

Answers built from our own checks of this server.

Why is there no uptime for Rounder tools?
Rounder tools 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 @roundertools/mcp was installed 194 times last week.
How do I connect Rounder tools?
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 @roundertools/mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Rounder tools?
The npm package @roundertools/mcp was installed 194 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 Rounder tools open source?
Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.