Rulesync

Rulesync is a Node.js command line tool that generates configuration files for many AI development tools from a single set of unified rule files. Instead of copying the same instructions into separate formats for each assistant, a team writes its rules once in a .rulesync directory and generates the files each tool expects. The workflow starts with an init command that creates sample rule files and a configuration file. Existing setups can be imported from tool specific files such as CLAUDE.md, Cursor rules or GitHub Copilot instructions, and the generate command then produces output for chosen targets and features. Supported features include rules, MCP configuration, commands, subagents and skills, and the documentation lists the supported tools, file formats and a programmatic API. Further options include global mode, simulated features for tools that lack native support, declarative skill sources fetched from other repositories, a dry run mode and an MCP server. Generated files are plain configuration that can be committed and reviewed, and they continue to work without Rulesync installed. It is intended for developers and teams who want consistent conventions, context and guardrails across assistants, faster onboarding for new members, and the freedom to switch tools without rewriting standards. It installs from npm. Rulesync is released under the MIT license and is free to use. The vendor publishes no paid plans.