LexGraph

Built for Built with Opus 4.7: a Claude Code hackathon (Apr 21–26, 2026)

A knowledge graph for Peru's Tribunal Constitucional sentencias. Ask legal questions in Spanish, get cited answers synthesized across rulings by Claude Opus 4.7.

Status

🚧 In active development. This README will be expanded as features land.

Quick start

# Clone
git clone https://github.com/mbarrueto/lexgraph.git
cd lexgraph

# Install
python -m venv .venv
.venv\Scripts\activate     # Windows
# source .venv/bin/activate  # macOS/Linux
pip install -r requirements.txt

# Configure
cp .env.example .env
# Edit .env with your Anthropic and OpenAI API keys

# Run
python -m lexgraph.api

Stack

• Claude Opus 4.7 (claude-opus-4-7) — visible reasoning engine
• LightRAG — knowledge graph framework
• PyMuPDF — PDF extraction
• OpenAI text-embedding-3-large — embeddings
• FastAPI — backend
• Next.js + Tailwind — frontend (planned)

License

MIT — see LICENSE.

Author

Marco Barrueto — Peruvian-American founder building tools for legal research.