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Agent Toolbelt MCP Server

local only

Agent Toolbelt MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 63 installs a week from npm. Last commit 21 Aug 2026.

19 focused API tools for AI agents: contract review, prompt optimizer, context packing, and more.

Installs per day peak 189 · avg 18 · -66% w/w
a month agotoday
63
Installs / week
npm · agent-toolbelt-mcp
1
Stars
0 open issues
21 Aug 2026
Last commit
0 releases in 90 days
License
TypeScript

What the code does

We read the source, 20 h ago · rules 3dff92dd89df

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.

A line of code looks encrypted src/tools/text-extractor.ts:52
      /\b\d{1,6}\s+[A-Z][a-zA-Z\s]+(?:St|Street|Ave|Avenue|Blvd|Boulevard|Rd|Road|Dr|Drive|Ln|Lane|Way|Ct|Court|Pl|Place)\b\.?(?:\s*(?:#|Apt|Suite|Ste|Unit)\s*\w+)?(?:\s*,\s*[A-Z][a-zA-Z\s]+)?(?:\s*,\s*[A-Z]{2}\s+\d{5}(?:-\d{4})?)?/g,
Runs a command on install [пакет] package.json:1
postinstall: node scripts/postinstall.js
Page executes code built at runtime public/index.html:1220
        grid.innerHTML = data.tools.map(tool => {
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

CI pipeline leaks secrets outward .github/workflows/db-backup.yml:70
          BASE_URL: ${{ secrets.BACKUP_BASE_URL || 'https://www.agenttoolbelt.live' }}

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

This one needs environment variables set before it will start: AGENT_TOOLBELT_KEY (Your Agent Toolbelt API key. Get one free at https://agent-toolbelt-production.up.railway.app). The author declared them in the registry entry; get the values from the project itself.

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Agent Toolbelt MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Agent Toolbelt MCP?
Agent Toolbelt MCP 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 agent-toolbelt-mcp was installed 63 times last week.
How do I connect Agent Toolbelt MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls agent-toolbelt-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Agent Toolbelt MCP?
The npm package agent-toolbelt-mcp was installed 63 times in the last week. Week over week that is -66%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Agent Toolbelt MCP open source?
We cannot say either way: written in TypeScript and 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.