Sourcebook

Sourcebook is a code safety and completeness tool for developers and AI agents. It scans git diffs to identify files that should have been changed but weren't, using a combination of rules-based structural analysis and AI-powered semantic detection. Sourcebook is designed to catch common oversights like missed test files, config updates, and companion files. It integrates via CLI, Claude Code pre-commit hooks, and as an MCP server, making it suitable for both manual and autonomous agent-driven workflows in multi-language repositories.