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Docs MCP Server
Grounded Docs MCP Server: Open-Source Alternative to Context7, Nia, and Ref.Tools
Install
$
npx @arabold/docs-mcp-server@latest scrape react https://react.dev/reference/reactClaude Code
claude mcp add docs-mcp-server -- npx @arabold/docs-mcp-server@latest scrape react https://react.dev/reference/reactCursor / Claude Desktop (mcp.json)
{
"mcpServers": {
"docs-mcp-server": {
"command": "npx",
"args": [
"@arabold/docs-mcp-server@latest",
"scrape",
"react",
"https://react.dev/reference/react"
]
}
}
}Install command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →Grounded Docs: Your AI's Up-to-Date Documentation Expert
Docs MCP Server solves the problem of AI hallucinations and outdated knowledge by providing a personal, always-current documentation index for your AI coding assistant. It fetches official docs from websites, GitHub, npm, PyPI, and local files, allowing your AI to query the exact version you are using.
✨ Why Grounded Docs MCP Server?
The open-source alternative to Context7, Nia, and Ref.Tools.
- ✅ Up-to-Date Context: Fetches documentation directly from official sources on demand.
- 🎯 Version-Specific: Queries target the exact library versions in your project.
- 💡 Reduces Hallucinations: Grounds LLMs in real documentation.
- 🔒 Private & Local: Runs entirely on your machine; your code never leaves your network.
- 🧩 Broad Compatibility: Works with any MCP-compatible client (Claude, Cline, etc.).
- 📁 Multiple Sources: Index websites, GitHub repositories, local folders, and zip archives.
- 📄 Rich File Support: Processes HTML, Markdown, PDF, Office documents (Word, Excel, PowerPoint), OpenDocument, RTF, EPUB, Jupyter Notebooks, and 90+ source code languages.
📄 Supported Formats
| Category | Formats |
|---|---|
| Documents | PDF, Word (.docx/.doc), Excel (.xlsx/.xls), PowerPoint (.pptx/.ppt), OpenDocument (.odt/.ods/.odp), RTF, EPUB, FictionBook, Jupyter Notebooks |
| Archives | ZIP, TAR, gzipped TAR (contents are extracted and processed individually) |
| Web | HTML, XHTML |
| Markup | Markdown, MDX, reStructuredText, AsciiDoc, Org Mode, Textile, R Markdown |
| Source Code | TypeScript, JavaScript, Python, Go, Rust, C/C++, Java, Kotlin, Ruby, PHP, Swift, C#, and many more |
| Data | JSON, YAML, TOML, CSV, XML, SQL, GraphQL, Protocol Buffers |
| Config | Dockerfile, Makefile, Terraform/HCL, INI, dotenv, Bazel |
See Supported Formats for the complete reference including MIME types and processing details.
🚀 Quick Start
CLI First
For agents and scripts, the CLI is usually the simplest way to use Grounded Docs.
1. Index documentation (requires Node.js 22+):
npx @arabold/docs-mcp-server@latest scrape react https://react.dev/reference/react
Scraping a library version that already exists fails rather than overwriting it. Re-index it with --replace, or update it in place with refresh:
npx @arabold/docs-mcp-server@latest scrape react https://react.dev/reference/react --replace
For hash-routed SPA docs sites, enable hash preservation explicitly:
npx @arabold/docs-mcp-server@latest scrape my-spa https://docs.example.com/#/guide --preserve-hashes
2. Query the index:
npx @arabold/docs-mcp-server@latest search react "useEffect cleanup" --output yaml
3. Fetch a single page as Markdown:
npx @arabold/docs-mcp-server@latest fetch-url https://react.dev/reference/react/useEffect
Output Behavior
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