Agent OS is a framework for AI coding assistants to establish, discover, and inject project standards and shape specifications. It provides a set of markdown commands (commands/agent-os/) that define workflows for common tasks like discovering codebase patterns, maintaining an index of standards, injecting relevant standards into context, planning product vision, and shaping feature specs. These commands are designed to be consumed by tools like Claude Code and Cursor. The repository also includes bash scripts for installing Agent OS into a project, syncing standards back to a base profile, and shared utility functions. The core value is not executable code but a methodology encoded in instructions and shell scripts that enforce a disciplined approach to spec-driven development with AI agents. The codebase is lean, well-structured, and focused on solving the problem of keeping AI agents aligned with team conventions without heavy tooling overhead.