langextract

by google · Miscellaneous · ★ 39,020

langextract is an MCP server by google. A Python library for extracting structured information from unstructured text using LLMs with precise source grounding and interactive visualization. It has 39,020 GitHub stars and ranks #9 of 11627 in Miscellaneous by stars.

Category: Miscellaneous
Author: google
GitHub stars: 39,020
This week: Tracking since 24 Oct 2026
Language: Python
License: Apache-2.0 (open source)
Last update: 2026-10-17 (7 days ago)
Links: Source Website PyPI

llm
nlp
python
gemini-ai
information-extration
large-language-models
structured-data
gemini
gemini-api
gemini-flash
gemini-pro

How to install langextract

langextract is published on PyPI as iflow-mcp_langextract, and it depends on mcp. These steps assume it runs as a local stdio server, which is the usual setup.

Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need uv for uvx.

Add it to Claude Code from a terminal:

claude mcp add langextract -- uvx iflow-mcp_langextract

Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

{
  "mcpServers": {
    "langextract": {
      "command": "uvx",
      "args": [
        "iflow-mcp_langextract"
      ]
    }
  }
}

Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm langextract and its tools are listed. The install guide covers VS Code and Codex.

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Frequently asked questions

What is langextract?

langextract is an MCP server by google in the Miscellaneous category. A Python library for extracting structured information from unstructured text using LLMs with precise source grounding and interactive visualization. It has 39,020 GitHub stars and ranks #9 of 11627 in Miscellaneous by stars. It is written in Python. It is licensed under Apache-2.0. It was last updated 7 days ago.

Is langextract free and open source?

Yes. langextract is published under the Apache-2.0 license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

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Data last updated 25 October 2026. Stars and downloads are refreshed every day from GitHub and npm.