MCP Server

Maintained

MIT

MidOS - MCP Community Library MCP Server

io.github.MidOSresearch/midos-mcp

Curated knowledge API for AI agents—skill packs, semantic search, and validated patterns.

What is the MidOS - MCP Community Library MCP server?

The MidOS MCP Community Library is a knowledge and skills API that exposes 68 MCP tools for semantic search, reusable patterns, and validated improvements across 46K+ curated chunks. It integrates with Claude, Cursor, Cline, and other AI clients via stdio or HTTP transport, requiring a local MidOS knowledge base installation.

MidOS provides AI agents with access to a curated knowledge base of 46K+ chunks, 119 reusable skill patterns, 383 validated improvements (EUREKA), and semantic vector search. Use it to augment Claude or Cursor with domain-specific knowledge, retrieve best practices, and access state-of-the-art convergence ceilings—all locally or via HTTP.

How to install MidOS - MCP Community Library

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "midos-mcp": {
      "command": "uvx",
      "args": [
        "midos-mcp"
      ]
    }
  }
}

Tools & capabilities

Tools this server exposes to the agent.

Knowledge Search — Search 46K+ curated chunks across all domains with full content (no truncation)
Skills — Access 119 reusable patterns across 16+ technology stacks
EUREKA — Retrieve 383 validated improvements with measured ROI
Truth — Access 50 verified patches and corrections
SOTA — Query 140 state-of-the-art convergence ceilings
Vector Search — Semantic search via LanceDB + Gemini embeddings (3072-d)
API Key Management — Generate and manage tiered API keys (dev, pro, admin)
Health Check — Monitor knowledge base stats, vector store status, and dependencies

Use cases

Search a curated knowledge base of 46K+ chunks to augment Claude or Cursor with domain-specific information
Retrieve 119 reusable skill patterns and best practices across 16+ technology stacks
Access 383 validated improvements (EUREKA) with measured ROI for optimization decisions
Perform semantic search on knowledge using vector embeddings for more relevant results
Verify patches and corrections from the Truth database for security and accuracy
Query state-of-the-art convergence ceilings to understand performance limits in your domain

MidOS - MCP Community Library MCP server FAQ

What is the MidOS MCP Community Library?

MidOS is a knowledge and skills API that exposes 68 MCP tools for semantic search, reusable patterns, and validated improvements. It integrates with AI clients like Claude, Cursor, and Cline to augment them with curated domain knowledge.

Is MidOS free?

Yes, the Dev tier is free and includes 34 tools, 500 queries/month, and full content access. A Pro tier ($10/mo) offers 68 tools, 100,000 queries/month, and additional security ops and orchestration packs.

How do I install MidOS in Cursor or Claude?

Install via pip (pip install midos-mcp), set MIDOS_ROOT to your MidOS directory, then run midos-mcp config --generate cursor or midos-mcp config --generate claude to get ready-to-paste JSON config.

What transports does MidOS support?

MidOS supports stdio (default for Claude Code, Cursor, Cline), Streamable HTTP (127.0.0.1:8419), and legacy SSE. Use midos-mcp serve --http for remote access.

Do I need an API key?

No API key is required for the free Dev tier. API keys are optional and used to unlock Pro tier features; invalid or expired keys silently fall back to Dev tier.

What is the MidOS knowledge base?

The MidOS knowledge base is a local directory containing 46K+ curated chunks, 119 skill patterns, 383 validated improvements, and 140 state-of-the-art references. It must be cloned from the GitHub repo and pointed to via MIDOS_ROOT.

README (reference)

Source of truth, from the repository.

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

Flag	Transport	Use Case
`--stdio`	stdio	Claude Code, Cursor, Cline (default)
`--http`	Streamable HTTP	Web clients, remote access
`--sse`	Server-Sent Events	Legacy 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

Variable	Default	Description
`MIDOS_ROOT`	auto-detect	Path to MidOS installation (required)
`MIDOS_HOST`	`127.0.0.1`	HTTP server bind host
`MIDOS_PORT`	`8419`	HTTP server bind port
`MIDOS_TRANSPORT`	`stdio`	Default transport

Root Detection

The server locates the MidOS knowledge base:

MIDOS_ROOT environment variable (recommended)
Auto-detect: walks up from package location looking for CLAUDE.md + knowledge/
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

Client	Config File	Transport
Claude Desktop	`claude_desktop_config.json`	stdio
Claude Code	`.mcp.json`	stdio
Cursor	`.cursor/mcp.json`	stdio
Cline	`cline_mcp_settings.json`	stdio
Windsurf	`~/.codeium/windsurf/mcp_config.json`	stdio
Continue.dev	`~/.continue/config.json`	stdio
Zed	`~/.config/zed/settings.json`	stdio
OpenCode	`opencode.json`	SSE

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:

Tier	Tools	Access
Dev	34 tools	Free — no API key needed, full content, 500 queries/month
Pro	68 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

Tier	Queries/month	Content
Dev	500	Full content (no truncation)
Pro	100,000	Full 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

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