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Fractal Co-Design

Tools

The packages/ directory hosts TypeScript tools that implement FCD canon concepts directly. Each tool is independently installable from npm under the @fractal-co-design/* scope.

Available tools

@fractal-co-design/fca-index — v1.0

A semantic-search index over FCA-compliant codebases for token-efficient agent retrieval. Scans your project, builds a SQLite + Lance embedding store over component documentation, and exposes typed queries (context_query, context_detail, coverage_check) so agents can pull only the architectural context they need instead of re-reading whole packages.

  • Library — programmatic API with ports-injected factory for custom wiring
  • CLI — fca-index scan | query | coverage
  • MCP server — standalone fca-index-mcp consumable by any MCP client (Claude Code, etc.)
  • Polyglot scanning — built-in language profiles for TypeScript, Scala, Python, Go, and markdown-only repos

Read the docs →

Roadmap

  • v1.1+ — additional tools (port-freeze checker, surface-design-record generator, multi-repo FCA dashboard) as the methodology stabilizes.

Want to propose a tool? Open an issue on GitHub — new tools follow the FCD design lifecycle (fcd-design → fcd-plan → commissions).