---
title: "ToolPiper MCP Server — 300+ Tools, Install Only What You Need"
description: "Local MCP server for macOS. 300+ tools for AI coding assistants — LLM inference, browser automation, testing, system actions, video, and more. Filter by category to save context window tokens. Works with Claude Code, Cursor, Windsurf."
canonical: "https://modelpiper.com/mcp"
---

# ToolPiper MCP Server — 300+ Tools, Install Only What You Need

> Local MCP server for macOS. 300+ tools for AI coding assistants — LLM inference, browser automation, testing, system actions, video, and more. Filter by category to save context window tokens. Works with Claude Code, Cursor, Windsurf.

Offline

# One install. Only the tools you need.

ToolPiper is a local MCP server for macOS with 300+ tools across 9 categories. Load all of them, or filter to just the ones you need — saving up to 90% of context window overhead.

## Get started

Two steps. Under 60 seconds.

1

### Download ToolPiper

Free DMG download. [modelpiper.com/download →](https://modelpiper.com/download)

2

### Connect to your AI client

Claude Code

```
claude mcp add toolpiper -- ~/.toolpiper/mcp
```

Cursor / Windsurf / Gemini Code — add to `.mcp.json`

```
{
  "mcpServers": {
    "toolpiper": {
      "type": "stdio",
      "command": "~/.toolpiper/mcp"
    }
  }
}
```

HTTP Transport — no CLI middleman

```
{
  "mcpServers": {
    "toolpiper": {
      "type": "http",
      "url": "http://localhost:9998/mcp"
    }
  }
}
```

## Pick your categories

Every tool definition costs tokens in the AI's context window. 300+ tools = ~2,000 tokens/message. Select only what you need.

Core

11 tools

LLM inference, TTS, STT, embeddings, OCR

Analysis

8 tools

Image/text analysis, RAG, upscaling

Browser

17 tools

AX-native browser automation, scraping, assertions

Testing

6 tools

PiperTest CRUD and execution

Motion

5 tools

Pose estimation, real-time skeleton streaming

Outreach

12 tools

GitHub, HN, Reddit, X, content queue

System

29 tools

macOS system actions — built into ToolPiper

Video

12 tools

Automated video creation pipeline

OAuth

4 tools

OAuth connection management

Your install command~2257 tokens/msg

```
claude mcp add toolpiper -- ~/.toolpiper/mcp
```

### 29 system tools built in

The `system` category (29 tools) controls audio, display, Bluetooth, windows, Finder, Dock, notifications, contacts, calendar, and more — all integrated directly into ToolPiper. No extra apps or configuration needed.

## How it works

The MCP binary ships inside ToolPiper.app — nothing else to install.

```
AI Client (Claude Code, Cursor, Windsurf, Gemini Code, etc.)
    ↓ JSON-RPC (stdio or HTTP)
~/.toolpiper/mcp [--category | --profile]    OR    POST localhost:9998/mcp
    ↓
ToolPiper.app (macOS, running)
    ↓
Backends (llama.cpp, FluidAudio, MLX Audio, Apple Intelligence, Vision, NLP, Pose, CDP, System Actions)
```

### Auth

The MCP binary reads ToolPiper's session key from disk on every request. Zero configuration.

### Errors

If ToolPiper isn't running, every tool returns an install message pointing to modelpiper.com.

### Annotations

Every tool has `readOnlyHint` and `openWorldHint` so AI clients make informed decisions.

### Filtering

Pass `--category` or `--profile` to serve only the tools you need.

## All tools 300+

Grouped by category. Click to expand.

Core11

Analysis8

Browser17

Testing6

Motion5

Outreach12

System29

Video12

OAuth4

## Ready?

```
claude mcp add toolpiper -- ~/.toolpiper/mcp
```

[Full MCP documentation →](/docs/mcp)