json-rules

The ultimate JSON-based rule engine that turns complex business logic into declarative configurations. Built for developers who believe code should be expressive, not repetitive.

Generic Rules engine in golang

📐 A fast, general-purpose JSON Rules Engine.

Flexible JavaScript rule engine for dynamic business logic, validation, and decision-making with JSON-based rules and built-in security.

✨Extensible, declarative linter for golang!

A Kotlin library for evaluating JSON-defined conditions against arbitrary context objects, with a threshold-based alert engine

JsonLogic skill for AI coding agents: generate, validate, run and debug JsonLogic rules. Claude Code, Cursor, Copilot, Codex, Gemini CLI. JSON logic playground, editor, validator, tester and evaluator: turn business rules into JSON. Works with JSON logic engines for JavaScript/npm, Python, Java, .NET/C#, PHP, Ruby, Go. JSON rules engine examples.

A tiny (≈ 1 KB gzipped), zero-dependency TypeScript library for evaluating rule trees expressed as JSON-serializable data.

⏸ Paused — not actively maintained, not recommended for use (may be revived). Dynamic form generation with conditional field logic; pairs with json-rules.

AI-friendly TypeScript rules engine for serializable JSON business rules and deterministic workflow decisions — LLM guardrails, agent-readable docs (llms.txt), MCP-ready.

Tokenlay Rules Engine

Sample Endpoint to Play With

Headless visual rule builder for json-rules: a React hook that offers exactly the operators and fields the engine can actually run.