Dev Tools & GitMCP RegistrynpmA · 84

gdharness MCP server

Name: gdharness
Author: Aureliolo

io.github.Aureliolo · Updated today

A harness for driving a Godot 4 project from an agent: addons, runtime bridge, MCP server, CLI.

At a glance

gdharness is an MCP server in the Dev Tools & Git category. It runs locally over stdio via `npx -y gdharness`, and declares no required credentials. It scores A (84/100) on the MCP Skills Hub health score as of Oct 28, 2026.

Source 26

One-click install

VS Code VS Code Insiders Cursor

Opens your editor and pre-fills the config. Your editor will ask before adding it.

How to install gdharness in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install gdharness in Claude CodeAnthropic's agentic CLI

Add the server

bash

claude mcp add gdharness -- npx -y gdharness

2
Verify it's connected
bash
```
claude mcp list
```
Sharing it with your team?
Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).
Use it in a session
Ask Claude to use the tools this server exposes. It discovers them automatically.

How to install gdharness in Claude DesktopDesktop app (MCP config)

Open your MCP config
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

Add this server

json

{
  "mcpServers": {
    "gdharness": {
      "command": "npx",
      "args": [
        "-y",
        "gdharness"
      ]
    }
  }
}

Restart Claude Desktop
The tools appear under the 🔌 menu once the app reloads.

How to install gdharness in CursorAI-first code editor

Create / edit .cursor/mcp.json in your project

json

{
  "mcpServers": {
    "gdharness": {
      "command": "npx",
      "args": [
        "-y",
        "gdharness"
      ]
    }
  }
}

Enable it
Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.

How to install gdharness in Codex CLIOpenAI coding agent

Add to ~/.codex/config.toml

toml

[mcp_servers.gdharness]
command = "npx"
args = ["-y", "gdharness"]

Run Codex
Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.

How to install gdharness in WindsurfCodeium's agentic IDE

Edit ~/.codeium/windsurf/mcp_config.json

json

{
  "mcpServers": {
    "gdharness": {
      "command": "npx",
      "args": [
        "-y",
        "gdharness"
      ]
    }
  }
}

Reload
Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.

How to install gdharness in ClineVS Code autonomous agent

Open Cline → MCP Servers → Configure
Adds to cline_mcp_settings.json.

Add the server

json

{
  "mcpServers": {
    "gdharness": {
      "command": "npx",
      "args": [
        "-y",
        "gdharness"
      ]
    }
  }
}

How to install gdharness in VS CodeCopilot / MCP support

Create .vscode/mcp.json

json

{
  "servers": {
    "gdharness": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "gdharness"
      ]
    }
  }
}

Start it
VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.

What does gdharness need from you?

Configuration only — Declares config values but no credentials.

GODOT_PATHoptionalEnvironment variable
Absolute path to the Godot 4.7 or newer executable. Without it, the usual install locations are searched.

Pass secrets through your shell environment rather than committing them into a config file.

What tools does gdharness expose?

This server runs as a local package. We only query remote servers for their tool list — asking this one would mean executing it, so its tools are listed in the documentation below.

What the code can do

Read from the published package source — never executed. Parsed 1 of 1 source file.

This server can run other programs on your machine, read and write files and make network requests.

How it was published

Published by a verified CI identity (github trusted publishing) rather than a personal token.
Has a provenance attestation tying this artifact to the commit it was built from.
1 npm maintainer — a single point of compromise · last published by GitHub Actions.

Maintainer of this package and think something here is wrong? Tell us and we'll correct it.

Before you install

Signals gathered from the source repo and package registry — not a safety verdict.

What it can reach

Runs code on your machine — Executes as a local process with your user's permissions, including filesystem access.
Downloads at launch — The package is fetched from its registry each run unless you pin a version.

Last commit today — Actively maintained.
Repository created 1 month ago — Very new project with little track record yet.
26 GitHub stars — Community adoption signal.

Client compatibility

Claude Code: NativeClaude Desktop: NativeCursor: NativeCodex CLI: NativeWindsurf: NativeCline: NativeVS Code: Native

Health score

A · 84

Maintenance, adoption, transparency and packaging — not a safety audit. How this is calculated

Maintenance30%100%
Last commit 0 days ago.
Adoption20%43%
26 stars.
Transparency20%75%
3/4: ✓ public source repo, ✓ declared license, ✓ documentation, ✗ discoverable tool list.
Provenance15%100%
Package and registry entry point at the same repository.
Packaging15%100%
Publishes a pinned version (1.3.46).

Documentation

Full README

gdharness

An agent cannot see a running game. It reads your scripts and guesses at the rest: whether the button is on screen, whether the panel updated, whether that error mattered.

gdharness makes the engine answerable instead. What the screen says, where a control is, what a property reads right now, what the console printed, what broke and on which line.

Install

Hand this to your agent:

text

Install gdharness here by following https://aureliolo.github.io/gdharness/agent.md,
then tell me what it asked you to recommend back to me.

Or do it yourself, and pick your harness: aureliolo.github.io/gdharness.

The loop it exists for

jsonc

editor_run      { "op": "start", "projectPath": "C:/games/hall" }
runtime_inspect { "op": "find", "says": "Buy" }              // the button, by the word on it
runtime_input   { "op": "click", "nodePath": "/root/Hall/Ledger/BuyButton" }
runtime_inspect { "op": "text", "nodePath": "/root/Hall/Ledger" }   // what the panel says now
editor_output   { "projectPath": "C:/games/hall" }           // errors and warnings, with backtraces

The open editor plays the game, so its debugger holds it, which is what lets you set a breakpoint and read the variables in scope when it stops.

Every answer is read back out of the engine after the fact, never echoed from the request. A tool that cannot answer says which state it is in and what would change it, rather than answering emptily, so a call that succeeded is a call that was understood.

At a glance

| | | | --------- | ------------------------------------------------------------------------------------ | | Needs | Godot 4.7 or newer, Node 22 or newer. Runs under Bun 1.4 too. | | Surface | 30 tools named domain_verb, 4 godot:// resources and 3 prompts | | Reaches | The editor that is open, a game it is playing, and the project on disk | | Harnesses | 35, written inside the project wherever the harness has a project config | | Skill | Written to .agents/skills, which every major harness reads | | Install | npm, or a Sigstore-signed archive with an SBOM, SLSA Build Level 3 | | Proven | Every tool driven against Godot 4.7.2 in CI, on Windows, Linux and macOS | | Status | 1.0: every release is a patch. What a bump means |

Older 4.x is likely to work and is not tested.

Alternatives to gdharness

Maintain gdharness? Add a badge to your README

Shows its health grade, and links readers to install steps for every client.

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