Ai Rules Builder

10xRules.ai is a platform for creating the rule files that steer AI coding assistants, together with a shared prompt library for teams. Instead of correcting an assistant that suggests the wrong framework patterns, developers build rules that describe their actual stack and export them in the Markdown formats that editors read. For individual developers, the Rules Builder is a visual interface covering more than 86 frameworks and libraries across six layers: frontend, backend, database, DevOps, testing and coding practices. Dropping in a package.json or requirements.txt file detects the stack automatically, rules can be exported as single or multiple Markdown files tuned to different editors or copied to the clipboard, and personal collections store rule sets for different projects. It works with GitHub Copilot, Cursor, Windsurf, Claude Code and JetBrains AI, and an MCP server lets assistants fetch rules programmatically. For teams, the Prompt Library adds multiple organizations with role based access, collections and segments to structure content, and a draft, review and publish workflow so members copy approved prompts instead of trading them through chat and notes. The site invites users to get started for free, but its pricing page sits behind a sign in and no paid plan amounts are published, so any team pricing is unpublished. The project is open source on GitHub and is built by the team behind the 10xDevs developer program.