Code Cannibalizer

"Copy from one, it's theft. Copy from a thousand, it's creation."

Surgically extract proven code patterns from existing repositories and synthesize them into new projects. Works with Claude Code, OpenCode, Cursor, and any agent that supports the Agent Skills spec.

Installation

Option 1: skills.sh (Recommended)

npx skills add michielhdoteth/code-cannibalizer

Option 2: Clone and Copy

git clone https://github.com/michielhdoteth/code-cannibalizer.git
cp -r code-cannibalizer/skills/* .agents/skills/

Option 3: Git Submodule

git submodule add https://github.com/michielhdoteth/code-cannibalizer.git .agents/code-cannibalizer

What It Does

• Discovers relevant open-source repos for any product/startup idea
• Maps codebases into structured knowledge graphs (graph.json + Graph.html + GRAPH_REPORT.md)
• Extracts patterns, architecture, and code from multiple sources
• Synthesizes a working, runnable application from the best patterns
• Generates a SYNTHESIS_REPORT.md documenting all sources and decisions

Usage

Describe what you want to build and the skill will:

1. Find relevant open-source repos
2. Map their structure into knowledge graphs
3. Extract patterns and architecture
4. Build a working application
5. Document everything in SYNTHESIS_REPORT.md

Examples

I want to build a real-time collaborative editor like Notion

Find open source alternatives to Stripe and build a payment integration

I'm building a CLI tool in Rust - look at clap and extract subcommand patterns

Features

Targeted Extraction (Default)

Search for specific patterns using ripgrep, then parse only matched files + imports. Full-repo mapping is opt-in.

Cache System

Graphs persist across sessions. Skip clone+map if graph.json already exists.

Fast Mode

Top 1-2 repos, skip code-simplifier, tests after build. Default for prototypes/spikes.

Parallel Execution

All explore subagents run concurrently for speed.

Workflow

Phase 0: Find repos that solved the problem
Phase 1: Clone and map them (graph.json + Graph.html + GRAPH_REPORT.md)
Phase 2: Extract the good parts
Phase 3: Build from proven pieces
Phase 4: Cleanup

Scripts

Script	Purpose	Run
scripts/pattern_analyzer.py	Analyze patterns from graph.json	python3 scripts/pattern_analyzer.py <paths> -o output.json [--fast] [--full-graph]
scripts/security_scanner.py	Scan for security issues	python3 scripts/security_scanner.py <repo_path> -o report.json [--scan-git]

License

GPL-3.0 - see LICENSE