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sepia

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).

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skill-packagent-skillsai-writingantigravitygrokclaude-codellmhumanizercodexdeveloper-toolsfictionprompt-engineeringwriting-toolsPython

Sepia is a skill pack that adds de-AI writing behavior to any Agent Skills-compatible agent, with native plugins for Claude Code, Codex, Grok Build, and Antigravity. It targets two modes: narrative-architecture repair for fiction and venue-matched rules for professional prose, based on the StoryScope paper (arXiv:2604.03136).

Reach for it when your agent's output reads as AI-generated and you want writing that fits fiction structure or a specific publication venue.

Use it to

  • Install the skill into an Agent Skills-compatible agent via the Skills CLI
  • Use the Claude Code, Codex, Grok Build, or Antigravity plugin
  • Repair narrative architecture in fiction drafts
  • Apply venue-matched rules to professional prose

For Writers and developers using LLM agents for prose

Role
skill-pack
Language
Python
Licence
MIT
Forks
172
Open issues
6
Last push
2026-09-16
Latest release
v0.2.0 · 2026-08-28
Skills shipped
6
topicsai-writingagent-skillsfictionhumanizerprompt-engineeringwriting-tools