Toonify MCP — Development skill for Claude Code

Toonify MCP

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Context compression plugin for Claude Code. Automatically trims large tool output—JSON, YAML, stack traces, and logs—before it enters the context window.

Works as a Claude Code plugin (automatic, zero-config) or as an MCP server (on-demand).

Features

• Compresses large JSON, YAML, and API responses
• Reduces long test failures and stack traces
• Runs automatically in the background—no change to your Claude Code workflow required

Limitations

Skipped for short text, very small files, and content where exact original formatting must be preserved.

Installation

git clone https://github.com/PCIRCLE-AI/toonify-mcp.git
cd toonify-mcp
npm install
npm run build
npm install -g .
toonify-mcp setup
toonify-mcp doctor

`toonify-mcp setup` adds the local marketplace and installs, updates, or re-enables the plugin automatically.

Check status

toonify-mcp status

MCP mode (optional)

toonify-mcp setup mcp
claude mcp list

`claude mcp list` should show `toonify: toonify-mcp - ✓ Connected`.

Pipe filter (any agent CLI)

`toonify-mcp compress` reads stdin, compresses what's safe to compress (JSON/YAML → TOON, repetitive logs collapsed; source code, prose, and precision-sensitive numbers pass through untouched), and writes to stdout. It never breaks a pipe — when compression doesn't apply, the input comes out byte-for-byte.

curl -s https://api.example.com/users | toonify-mcp compress

This works with any agent CLI, because output is compressed *before* it enters the model's context. To have an agent adopt it, add a ru