# understand-quickly

MCP server connecting agents to code-knowledge graphs and git drift details from the understand-quickly index.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 48
- Author: looptech-ai
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/looptech-ai/understand-quickly/tree/HEAD/mcp
- Updated: 2026-09-17
- HTML: https://affpapa.org/en/nevibecode/mcp/understand-quickly

## What it does

The server exposes the understand-quickly index to MCP clients through four tools: `list_repos`, `find_graph_for_repo`, `get_graph`, and `search_concepts`. An agent can inspect cataloged repositories, read raw parsed graphs, and locate concept terms across projects via cached aggregate stats.

When querying a GitHub URL or project identifier, the server checks drift against repository commits. It returns commit hashes, sync timestamps, and human-readable drift notes. If an exact match fails, it supplies up to five fuzzy suggestions using Levenshtein distance.

Running this package requires Node 20+ due to native `fetch`. It communicates over stdio. There is no auth or streaming. In-memory caching runs on a 60-second timer, and upstream network failures yield empty payloads rather than throwing errors.

## Requirements
- Needs: Node.js (commands run via npx)

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add understand-quickly -- npx -y @looptech-ai/understand-quickly-mcp
```

### Codex

**Platform CLI**
```bash
codex mcp add mcp -- npx -y @looptech-ai/understand-quickly-mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@looptech-ai/understand-quickly-mcp"
            ]
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "mcp": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@looptech-ai/understand-quickly-mcp"
            ]
        }
    }
}
```

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add mcp npx -y @looptech-ai/understand-quickly-mcp
```

## When to use it
- retrieve knowledge graphs for GitHub repositories directly in the agent
- inspect commit drift between indexed graphs and current branches
- search conceptual terms across cataloged codebases
- browse available project graphs filtered by tags or status

## Example prompts
- Check if there is a knowledge graph for https://github.com/looptech-ai/understand-quickly
- List all repositories in the registry with status ok using list_repos
- Search for authentication concepts across graphs using search_concepts

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md