sepia
Nanako0129/sepia
sepia is an agent skill project by Nanako0129 on GitHub: De-AI for fiction: repairs narrative structure and matches style rules to the venue, with methods from the StoryScope paper. It covers review, and its README says it works with Claude Code and Codex. 3.2k stars, last updated 2026-10-15, MIT license.
Editor's notes
It offers four operations, write, review, refactor and recreate, plus a hemingway voice entry; review only diagnoses, and refactor lists every problem first and then fixes them from the deepest layer up. Fiction goes through three passes from narrative architecture down to surface style, with a 30-item diagnostic rubric and only 3 to 5 moves applied per piece; Chinese text also loads a Chinese calibration file. The routing table has no category for screenplays. It installs via npx skills into 77+ agents, has native plugins for Claude Code, Codex and others, and the docs come in English plus Simplified and Traditional Chinese.
- Type
- Companion: de-AI
- Stages
- Review
- Agents
- Claude Code · Codex
- Format
- Agent skill
- Language
- English
- GitHub stars
- ★ 3.2k
- Last updated
- 2026-10-15
- License
- MIT
- SKILL.md files
- 6
- Checked by hand
- 2026-10-13
In the author's words
De-AI writing skill for any Agent Skills-compatible agent (77+ via the Skills CLI), with native plugins for Claude Code, Codex, Grok Build, and Antigravity. Narrative-architecture repair for fiction, venue-matched rules for professional prose. Based on StoryScope (arXiv:2604.03136).
Skills in this repo (6)
Names and descriptions come from each SKILL.md frontmatter; Chinese descriptions are shown in our English translation.
- sepia-hemingway
Use when a user asks to write or revise fiction in the Hemingway manner, or asks for strong de-AI on a story; applies Sepia's built-in Hemingway voice profile.
- sepia-recreate
Use when a user explicitly requests Sepia recreate for a full rewrite.
- sepia-refactor
Use when a user explicitly requests Sepia refactor for minimal in-place prose revision.
- sepia-review
Use when a user explicitly requests Sepia review to diagnose prose without editing.
- sepia-write
Use when a user explicitly requests Sepia write to create new prose.
- sepia
Make AI-generated writing read as human-written, in fiction and in professional prose. Repairs the narrative architecture of fiction and stories (based on StoryScope, arXiv:2604.03136); routes professional text through domain rules for release notes, announcements, PR and issue replies, code-review…
Install
npx skills add Nanako0129/sepia
# install a single skill
npx skills add Nanako0129/sepia --skill sepia-hemingway
# pick agents (claude-code / codex / cursor / opencode / gemini-cli / openclaw)
npx skills add Nanako0129/sepia -a claude-code -a codexDefault commands use the skills CLI and were not verified one by one; follow the repo README. Read SKILL.md before installing. Install guide →
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