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DevTool MCP Server

local only

DevTool MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 67 installs a week from pypi. Last commit 2 Nov 2026.

Development tooling MCP server with process management, proxy, and frontend diagnostics

Installs per day peak 16 · avg 4 · +46% w/w
a month agotoday
67
Installs / week
npm · @standardbeagle/devtool-mcp
22
Stars
0 open issues
2 Nov 2026
Last commit
no releases in 90 days
Apache-2.0
License
Go

What the code does

We read the source, 4 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.

Package points at a different repository standardbeagle/devtool-mcp
пакет @standardbeagle/devtool-mcp ссылается на standardbeagle/agnt
Runs an external command python/agnt/src/agnt/__init__.py:151
    return subprocess.run([str(binary_path)] + (args or []))
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.

    target := filepath.Join(projectPath, config.AgntConfigFileName)
Runs an external command integrations/opencode/src/index.ts:56
    child = spawn(bin, ["incidents", "watch"], { cwd: directory, env, windowsHide: true, stdio: ["ignore", "pipe", "pipe"] });
Builds a database query by concatenation internal/overlay/overlay.go:855
            select {
            case <-stop:
                return
            case <-ticker.C:
                i = (i + 1) % len(spinnerFrames)
Touches key and credential files cmd/agnt/ssh.go:37, internal/sshclient/auth.go:56
    Long: `Connect to <host> over SSH (resolving ~/.ssh/config for HostName,
Touches key and credential files cmd/agnt/ssh.go:37, internal/sshclient/auth.go:56
    Long: `Connect to <host> over SSH (resolving ~/.ssh/config for HostName,
Sends data to a third-party sink internal/proxy/ws_handler.go:587
    TunnelKindCloudflareQuick: {".trycloudflare.com"},

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

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answering

DevTool MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for DevTool MCP?
DevTool 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 @standardbeagle/devtool-mcp was installed 67 times last week.
How do I connect DevTool MCP?
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 @standardbeagle/devtool-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use DevTool MCP?
The npm package @standardbeagle/devtool-mcp was installed 67 times in the last week. Week over week that is +46%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is DevTool MCP open source?
Yes — it is published under the Apache-2.0 licence, written in Go and 22 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.