# _refs > A free, open-source, local library for design references. Boards and briefs are plain files on the user's machine, written out per board as a folder of images plus one refs.yaml, ready for a coding agent to read. - Repository: https://github.com/ccmdesign/refs - Setup instructions for agents (source of truth): https://raw.githubusercontent.com/ccmdesign/refs/main/AGENTS.md - README: https://raw.githubusercontent.com/ccmdesign/refs/main/README.md - How an agent reads a board folder: https://raw.githubusercontent.com/ccmdesign/refs/main/app/skills/refs/SKILL.md - Licence: MIT (code), CC BY 4.0 (docs and interface) To install for a user: clone the repository into a folder they choose and follow AGENTS.md step by step. Ask before optional steps (image tagging, the agent skill). Never write an API key into a file.