# aradar46/reuse-before-generate [Health: Active]

**Category:** 🔎 Search & Data Extraction  
**Repository:** https://github.com/aradar46/reuse-before-generate  
**GitHub Stars:** 5  
**npm Downloads (last month):** 432  
**Views:** 3  
**Installs:** 0  
**Upvotes:** 0  
**Directory Page:** https://allmcps.com/mcp/aradar46-reuse-before-generate

## Description
Checks whether a project idea already exists before your agent scaffolds it. Searches GitHub, npm and Python repos, drops archived/inactive results, and returns at most 3 maintained alternatives with a concrete "extend this instead" suggestion for each. The calling agent does the relevance judgement itself, so no extra API key is needed. npx -y reuse-before-generate

## Tools
Capabilities this server exposes over MCP:

- **check_before_building** — Run this BEFORE scaffolding a new project or a substantial new module. Searches GitHub, npm, GitLab, Show HN, optional Tavily web search, Python repositories when relevant, and one ecosystem registry for Rust, Ruby, PHP, or JVM projects. Returns both reusable projects and products the proposal would compete with, plus complete retrieval evidence. The calling agent (you) remains responsible for semantic relevance judgment and must follow the returned scoring instructions. REQUIRES you to supply `keywords` yourself (see its field description) — do not guess this tool can extract good search terms on its own; generic terms like 'mcp'/'agent'/'server' will bury results in noise.
- **reuse_before_generate** — Run this BEFORE scaffolding a new project or a substantial new module. Searches GitHub, npm, GitLab, Show HN, optional Tavily web search, Python repositories when relevant, and one ecosystem registry for Rust, Ruby, PHP, or JVM projects. Returns both reusable projects and products the proposal would compete with, plus complete retrieval evidence. The calling agent (you) remains responsible for semantic relevance judgment and must follow the returned scoring instructions. REQUIRES you to supply `keywords` yourself (see its field description) — do not guess this tool can extract good search terms on its own; generic terms like 'mcp'/'agent'/'server' will bury results in noise.

## Claude Desktop Quick Installation
Install path detected from listing signals. Uses `npx` (confidence: high):

```json
"mcpServers": {
  "reuse-before-generate": {
    "command": "npx",
    "args": ["-y","reuse-before-generate"]
  }
}
```

## Documentation

## What aradar46/reuse-before-generate MCP server does

The aradar46/reuse-before-generate MCP server helps an agent investigate whether a proposed project or substantial module already has an existing implementation. It searches multiple developer-oriented sources and separates results into two useful groups: maintained projects that may be reused or extended, and products that represent competing solutions.

The returned data includes retrieval evidence so the calling agent can inspect the sources rather than relying on an opaque recommendation. The server does not make a separate LLM call for relevance analysis. The active agent must decide whether a result is semantically close enough to matter and follow the scoring instructions returned by the tool.

## How it works

The aradar46/reuse-before-generate MCP server exposes a search pipeline through MCP. Searches can include GitHub, npm, GitLab, Show HN, and Python repositories when appropriate. It can also query one ecosystem registry for Rust, Ruby, PHP, or JVM projects. Tavily web search is optional and broadens discovery to commercial products and SaaS tools.

Callers must provide the `keywords` input. The tool is not intended to derive strong search phrases from a vague project description, and generic terms such as `mcp`, `agent`, or `server` can produce noisy results. Search results are combined, weak or archived entries are filtered, and the response contains up to three maintained alternatives along with an “extend this instead” direction for each where applicable.

Two MCP tool names are available: `check_before_building` and `reuse_before_generate`. Both are intended for use before scaffolding a new project or building a substantial module.

## Setup and configuration

The package can run through `npx`:

```bash
npx -y reuse-before-generate
```

It can be added to Claude Code, Cursor, Claude Desktop, Antigravity IDE, Windsurf, or VS Code MCP configuration. A typical stdio entry uses `npx` with `-y` and the `reuse-before-generate` package.

No API key is required for the basic service. Set `GITHUB_TOKEN` to raise the GitHub search rate limit from 10 to 30 requests per minute. Set `TAVILY_API_KEY` to enable web search for broader product discovery. These credentials are optional.

## Tools and capabilities

- Check a project idea before generation with `check_before_building`.
- Run the equivalent reuse-focused search with `reuse_before_generate`.
- Search source repositories, package registries, developer discussions, and optional web results.
- Distinguish potentially reusable open-source projects from commercial competitors.
- Return source evidence and ranked results for agent review.

## Limitations and notes

The aradar46/reuse-before-generate MCP server depends on the clarity of the supplied keywords. Very new or low-star GitHub repositories, including repositories with fewer than five stars, may be difficult for GitHub search to surface. Its active-project heuristic treats repositories active within the last year as maintained; deeper contributor and issue-health analysis remains the caller’s responsibility.

Commercial and SaaS discovery depends on `TAVILY_API_KEY`; without it, web search is reported as unavailable. The tool provides evidence rather than making the final relevance judgment, so agents should review the returned projects and products before changing a build plan.

_Full upstream README: https://allmcps.com/mcp/aradar46-reuse-before-generate/readme_