LibreAI / Local LLM / ext-apps
// local-llm · modelcontextprotocol/ext-apps

ext-apps

Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers

★ 2.9k stars⑂ 393 forksUnknownupdated 2026-09
▦ visual — this project's README ships no embeddable screenshot,
so here's a placeholder. The guide below is complete regardless.
// project facts

Project facts

ext-apps is an open-source local llm project by modelcontextprotocol (modelcontextprotocol/ext-apps on GitHub). It has 2,895 GitHub stars and 393 forks, is released under the Unknown license, and was last updated on GitHub on 25 September 2026.

GitHub stars
2,895
Forks
393
License
Unknown
Last updated on GitHub
25 September 2026
Category
Local LLM
Listing
Full install guide
Official site
Official site
// how it works

How it works

  1. Install the runtime

    One binary or app gets you a working local model setup.

  2. Download a model

    Pick a size that fits your RAM/VRAM; smaller models run on laptops.

  3. Chat or integrate

    Use the built-in UI, or point OpenAI-compatible clients at it.

  4. Go private

    Airplane mode works — your prompts never leave the device.

// features

Why people love it

100% private

Prompts and documents stay on your hardware, always.

Extensible

RAG, tools, and agents build on the same base.

Quantized efficiency

Smart compression runs big models on modest hardware.

Offline capable

Works on planes, in basements, behind firewalls.

Model choice

Swap between hundreds of open models freely.

OpenAI-compatible APIs

Existing tools plug in by changing one URL.

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// run it

Run it yourself

  1. Step 1 — Clone the repo

    Download the source and move into the project folder.

    git clone https://github.com/modelcontextprotocol/ext-apps.git
    cd ext-apps
  2. Step 2 — Check the README

    Every project documents its own setup; start with install requirements.

    cat README.md | head -60
  3. Step 3 — Run it

    Follow the project's launch command — Docker, pip, npm, or a binary release.

    # see README for the exact launch command
// use cases

What you can build

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// faq

Questions, answered

Who maintains ext-apps?

It is an open-source project at modelcontextprotocol/ext-apps with 393 forks. Check the repo's contributors and recent commits to see how active maintenance is.

Is ext-apps free for commercial use?

Licensed under Unknown — check the repo for commercial-use terms.

Are local models as good as GPT-4?

Close on many tasks now; frontier cloud models still lead on hard reasoning.

What hardware do I need?

8B models run on 16GB RAM; bigger models want a real GPU.

Which model should I start with?

A recent 8–32B instruct model is the sweet spot for most machines.

// keep exploring

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// alternatives

Alternatives in Local LLM

The most-starred other Local LLM projects in the LibreAI catalogue — the realistic shortlist if ext-apps is not the right fit.

Get ext-apps

Free and open — grab the source, star the repo, and start creating.