gen-system Understand

Name: gen-system Understand
Author: hpdkhoa

by hpdkhoaversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.hpdkhoa/gen-understand

Install

Overview

Description from the maker (original English)

Parser facts about a codebase: architecture, call graphs, control flow, effects, beliefs

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Developer tools

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: UNDERSTAND_MCP_BINARY, UNDERSTAND_MCP_CACHE

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "gen-understand": {
      "command": "npx",
      "args": [
        "-y",
        "gen-understand",
        "--root",
        "."
      ],
      "env": {
        "UNDERSTAND_MCP_BINARY": "your-value",
        "UNDERSTAND_MCP_CACHE": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add gen-understand --env UNDERSTAND_MCP_BINARY=your-value --env UNDERSTAND_MCP_CACHE=your-value -- npx -y gen-understand --root .

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "gen-understand": {
      "command": "npx",
      "args": [
        "-y",
        "gen-understand",
        "--root",
        "."
      ],
      "env": {
        "UNDERSTAND_MCP_BINARY": "your-value",
        "UNDERSTAND_MCP_CACHE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "gen-understand": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "gen-understand",
        "--root",
        "."
      ],
      "env": {
        "UNDERSTAND_MCP_BINARY": "your-value",
        "UNDERSTAND_MCP_CACHE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

UNDERSTAND_MCP_BINARY env
Path of a local understand-mcp binary; skips the download, for offline machines
UNDERSTAND_MCP_CACHE env
Folder for the downloaded binary; defaults to the user cache folder

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account hpdkhoa, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Developer toolsi

More stars than 0% of the other 1395 servers in this category
Published to the registry more recently than 65% of the other 1395 servers in this category
Basic checks equal to or better than 100% of the other 1395 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is gen-system Understand safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 26 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Cloudflare MCP

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

gen-understand

gen-system's Understand engine as an MCP server. It gives an AI agent parser facts about a codebase: the architecture, symbols, call graphs, control flow graphs, effects, source and the beliefs gen-system holds about each routine. No model writes these answers; deterministic parsers for Go, COBOL with copybooks, CA Gen, Java, TypeScript and Python do.

The server is read only. It runs locally and sends nothing anywhere.

Use it

Claude Code

claude mcp add gen-understand -- npx -y gen-understand --root /path/to/your-repo

Codex (~/.codex/config.toml)

[mcp_servers.gen-understand]

command = "npx" args = ["-y", "gen-understand", "--root", "/path/to/your-repo"]

Cursor (.cursor/mcp.json)

"mcpServers": { "gen-understand": { "command": "npx", "args": ["-y", "gen-understand", "--root", "."] } } }

Tools

architecture, search_symbols, call_graph, control_flow, source, file_symbols, effects and beliefs. With --allow-corrections, also correct_belief. The full list, the flags and the protocol details are in docs/mcp.md.

How this package works

The server is a Go binary. On first run this package downloads the binary for your platform from the gen-system release of the same version, checks its SHA-256 against the release's checksums.txt, and caches it. Later runs start at once and work offline. Builds exist for Linux, macOS and Windows, on x64 and arm64.

Variable	Use
`UNDERSTAND_MCP_BINARY`	Path of a local `understand-mcp` binary. Skips the download, for offline machines
`UNDERSTAND_MCP_CACHE`	Folder for the downloaded binary. Default: the user cache folder

Without npm, install the binary with Go: go install github.com/hpdkhoa/gen-system/generator/cmd/understand-mcp@latest.

License

Apache-2.0.

gen-system Understand

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

gen-understand

Use it

Tools

How this package works

License