Is l4-ide open source?

Yes, licensed under NOASSERTION.

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l4-ide

Active·★ 37·NOASSERTION·Updated 2026-07-15

L4 is a domain-specific programming language for law that treats legal rules as executable specifications. It provides a comprehensive toolchain including a compiler, IDE extension, REPL, and decision service. L4 enables formal verification, automated testing, and web app generation from legal specifications.

#contracts#l4#legal#legislation#mcp#mcp-server#mcp-servers

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$ Install

$ git clone https://github.com/smucclaw/l4-ide.git

↗ Visit site ★ GitHub

Features

01Formalize legal rules with mathematical precision

02Automated testing of contracts against scenarios

03Automatic detection of logical contradictions and loopholes

04Generate user-facing web applications from legal specifications

05Enterprise integration via REST APIs

Compatibility

VS Code

VS Code Extension

Verified via docs

Web

Web Editor

Verified via docs

CLI

Command Line Tool

Verified via docs

REPL

Interactive REPL

Verified via docs

LSP

Language Server

Verified via docs

Quick start

$ git clone https://github.com/smucclaw/l4-ide.git

Use cases

↳Government regulatory compliance

↳Insurance policy analysis

↳Commercial agreement analysis

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smucclaw /

l4-ide

↗

L4 - Rules-as-code - is an open-source functional specification language for business rules, legal contracts, and legislation/regulation, with a CNL syntax for isomorphism.

Last commit3mo ago

StatusActive

CategoryDev Tooling

Links

Documentation↗Discussion↗Issues↗Releases↗

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