Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

MidOS - MCP Community Library

by MidOSresearchversion 2026.2.27i★ –iRuns on your computer
Registry nameio.github.MidOSresearch/midos

Install

Overview

Description from the maker (original English)

Curated knowledge for AI agents — 19K chunks, 121 skills, semantic search via MCP

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Search & AI memory
  • You need to fill in: MIDOS_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: MIDOS_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • PyPIPython’s uv installed (for the uvx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "midos": {
      "command": "uvx",
      "args": [
        "midos-mcp"
      ],
      "env": {
        "MIDOS_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add midos --env MIDOS_API_KEY=your-value -- uvx midos-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "midos": {
      "command": "uvx",
      "args": [
        "midos-mcp"
      ],
      "env": {
        "MIDOS_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "midos": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "midos-mcp"
      ],
      "env": {
        "MIDOS_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • MIDOS_API_KEY secret env
    MidOS API key for authenticated access (optional for community tier)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account MidOSresearch, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

  • More stars than 0% of the other 7251 servers in this category
  • Published to the registry more recently than 4% of the other 7251 servers in this category
  • Basic checks equal to or better than 100% of the other 7251 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is MidOS - MCP Community Library safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: MIDOS_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (2026.2.27) reached the registry 8 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated today
Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago
Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

midos-mcp

MidOS MCP Community Library — Knowledge, Skills, and Research as MCP tools.

Install once, connect to any AI client.

Install

pip install midos-mcp

Requirement: MidOS knowledge base must be available locally. Set the MIDOS_ROOT environment variable to point to your MidOS installation directory (the one containing knowledge/ and modules/).

export MIDOS_ROOT=/path/to/midos

Quick Start

# Start server (stdio — default for Claude Code, Cursor, etc.)

midos-mcp serve

Start with HTTP transport

midos-mcp serve --http

Generate config for your AI client

midos-mcp config --generate claude midos-mcp config --generate cursor

Check health

midos-mcp health

Commands

midos-mcp serve

Start the MCP server with your preferred transport.

midos-mcp serve              # stdio (default)

midos-mcp serve --http # Streamable HTTP on 127.0.0.1:8419 midos-mcp serve --sse # Legacy SSE transport midos-mcp serve --http --host 0.0.0.0 --port 9000

FlagTransportUse Case
--stdiostdioClaude Code, Cursor, Cline (default)
--httpStreamable HTTPWeb clients, remote access
--sseServer-Sent EventsLegacy clients
midos-mcp config

Generate ready-to-paste JSON config for any supported MCP client.

midos-mcp config --generate claude    # Claude Desktop / Claude Code

midos-mcp config --generate cursor # Cursor IDE midos-mcp config --generate cline # Cline (VS Code) midos-mcp config --generate windsurf # Windsurf IDE midos-mcp config --generate continue # Continue.dev midos-mcp config --generate zed # Zed Editor midos-mcp config --generate opencode # OpenCode midos-mcp config --generate http # Generic HTTP client

Write to file

midos-mcp config --generate claude -o mcp-config.json

midos-mcp health

Check server health: knowledge base stats, vector store status, dependencies.

midos-mcp health          # Human-readable output

midos-mcp health --json # JSON output for scripts

midos-mcp keys

Manage API keys for tiered access control.

midos-mcp keys generate --name "my-app" --tier dev

midos-mcp keys list midos-mcp keys revoke midos_sk_abc

Tiers: dev (free), pro ($10/mo), admin.

Configuration

Environment Variables
VariableDefaultDescription
MIDOS_ROOTauto-detectPath to MidOS installation (required)
MIDOS_HOST127.0.0.1HTTP server bind host
MIDOS_PORT8419HTTP server bind port
MIDOS_TRANSPORTstdioDefault transport
Root Detection

The server locates the MidOS knowledge base:

  1. MIDOS_ROOT environment variable (recommended)
  2. Auto-detect: walks up from package location looking for CLAUDE.md + knowledge/
  3. Fallback: current working directory

If you installed via pip, auto-detect won't find the knowledge base. Either:

# Option A: Clone the repo and point to it

git clone https://github.com/MidOSresearch/midos.git export MIDOS_ROOT=./midos

Option B: Point to an existing MidOS directory

export MIDOS_ROOT=/path/to/your/midos

Verify with midos-mcp health — it shows the detected root and knowledge counts.

Supported Clients

ClientConfig FileTransport
Claude Desktopclaude_desktop_config.jsonstdio
Claude Code.mcp.jsonstdio
Cursor.cursor/mcp.jsonstdio
Clinecline_mcp_settings.jsonstdio
Windsurf~/.codeium/windsurf/mcp_config.jsonstdio
Continue.dev~/.continue/config.jsonstdio
Zed~/.config/zed/settings.jsonstdio
OpenCodeopencode.jsonSSE

Optional Dependencies

# Vector store support (LanceDB + embeddings)

pip install midos-mcp[vector]

Development tools

pip install midos-mcp[dev]

What's Inside

MidOS exposes 68 MCP tools across 2 tiers:

TierToolsAccess
Dev34 toolsFree — no API key needed, full content, 500 queries/month
Pro68 tools$10/mo — security ops, AOTC, orchestration, maker write ops
Capabilities
  • Knowledge — Search 46K+ curated chunks across all domains (full content, no truncation)
  • Skills — 119 reusable patterns across 16+ technology stacks
  • EUREKA — 383 validated improvements with measured ROI
  • Truth — 50 verified patches and corrections
  • SOTA — 140 state-of-the-art convergence ceilings
  • Vector Search — Semantic search via LanceDB + Gemini embeddings (3072-d)

Rate Limits

TierQueries/monthContent
Dev500Full content (no truncation)
Pro100,000Full content + AOTC + ops packs

Invalid or expired API keys silently fall back to Dev tier.

Requirements

  • Python 3.10+
  • FastMCP 2.x
  • MidOS knowledge base (local)

License

MIT

Ask PopNx