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Hal MCP Server

local only

Hal runs on your own machine — the client starts it, so there is no endpoint to ping. 76 installs a week from npm. Last commit 22 Oct 2025.

HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models

Installs per day peak 62 · avg 15 · -14% w/w
a month agotoday
76
Installs / week
npm · hal-mcp
38
Stars
0 open issues
22 Oct 2025
Last commit
0 releases in 90 days
MIT
License
JavaScript

What the code does

We read the source, 21 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.

Dumps the whole environment src/index.ts:83
  for (const [key, value] of Object.entries(process.env)) {

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

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Hal — questions

Answers built from our own checks of this server.

Why is there no uptime for Hal?
Hal 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 hal-mcp was installed 76 times last week.
How do I connect Hal?
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 hal-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Hal?
The npm package hal-mcp was installed 76 times in the last week. Week over week that is -14%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Hal open source?
Yes — it is published under the MIT licence, written in JavaScript and 38 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.