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Community

GitHub Organisation

All LexPons projects are hosted at github.com/lexpons.

Key repositories:

  • lexpons-spec - the canonical LexPons specification
  • lexpons-worker - Cloudflare Worker for JSON/XML transforms
  • lexpons-vps - VPS backend for Catala and OpenFisca transforms
  • lexp - the lexp CLI (macOS, Linux, Unix shell)
  • lexpons-rule-packs - community-maintained regulatory rule packs
  • lexpons.org - this website

Install lexp CLI

macOS (Homebrew)

brew install lexpons/tap/lexp

Linux / Unix (curl installer)

curl -fsSL https://install.lexpons.org/lexp.sh | sh

Manual download

Pre-built binaries for macOS (arm64, x86_64) and Linux (x86_64, arm64) are available on the lexp releases page.

Self-hosting

You can run the full LexPons transform stack on your own infrastructure. See the self-hosting guide.

Contribute

LexPons welcomes contributions to:

  • legal analysis and structured mappings
  • rule model implementations
  • conformance tests
  • documentation and translations
  • downstream tooling

Contributions are welcome. The contribution path will be documented here as it is established.

VISOP is the founding and primary contributor to the open-source efforts of LexPons.

Ecosystem

Veroberg is a commercial SaaS product built by VISOP on top of LexPons outputs. VISOP is also the founding contributor to LexPons. The two are deliberately separate: LexPons is governed by an independent non-profit association, and its outputs are open for any downstream use - commercial or otherwise.