sepia

sepia is a De-AI writing skill that can be used with any Agent Skills-compatible agent. It has native plugins for Claude Code, Codex, Grok Build, and Antigravity. The skill provides a three-pass writing and revision protocol for fiction and a set of rules for professional prose. It can be installed using the Skills CLI or through the native plugin installers of the supported platforms. sepia is based on the StoryScope research and provides a set of operations for writing, reviewing, refactoring, and recreating prose. The skill is designed to calibrate to the human distribution and provides a set of features for diagnosing and correcting AI-generated prose. sepia also defines an interface for stacking a voice or style skill on top of it, allowing for more flexibility in writing and revision. The skill is open-source and has a MIT license. It is available on GitHub and has been installed and tested on several platforms, including Claude Code, Codex, Grok Build, and Antigravity. sepia provides a set of commands for installing, updating, and uninstalling the skill, as well as a set of operations for working with prose. The skill is designed to be used in a variety of contexts, including fiction and professional writing. sepia is a useful tool for anyone looking to improve the quality of their writing and to make it more human-like.