sepia skillA
sepia is agent-read markdown (skill) from nanako0129/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 comments, incident postmortems, tickets, work orders, technical articles, blog posts, and long-form journalism. Four operations - write, review (diagnose AI tells without editing), refactor (minimal i.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Sepia — de-AI writing This skill combines measured findings with marked editorial heuristics. In fiction, StoryScope's narrative-only classifier reached 93.2% macro-F1, while its Core Only 30-feature XGBoost held-out classifier reached 84.8% macro-F1 (AUPRC .828); the manual rubric is neither classifier. In professional prose the same structure-level result has been replicated once on company blog posts, where 187 structural features alone reached 98.0 macro-F1 on held-out companies (`SLOPSHAPE-2026`, a preprint with LLM-scored features and a pre-ChatGPT human corpus). The professional path combines measured studies with editorial heuristics, and its prescriptions are Sepia inferences unless a source explicitly tested the intervention; that replication tested detection, not any fix. Route first, then operate. Sepia writes for expert human readers and is tuned to pass no automated AI-text detector. ## Security boundary …
Read the whole file at its exact version.
How to install
mdr add nanako0129/sepia/sepia@v0.12.2mdr add nanako0129/sepia/sepia@sha256:b04e1eb2c58228bfPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_sjykabozg4afj6ua)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.12.2 latest | 2026-09-22 | 3414c31 | 13,642 B | A | view · diff |
| v0.12.1 | 2026-09-22 | 4c97036 | 13,642 B | A | view · diff |
| v0.12.1 | 2026-09-22 | 65280c8 | 13,495 B | A | view · diff |
| v0.12.0 | 2026-09-20 | 89d6490 | 13,495 B | A | view · diff |
| v0.11.0 | 2026-09-20 | 2cbb841 | 13,495 B | A | view · diff |
| v0.11.0 | 2026-09-19 | e5cbdeb | 13,506 B | A | view · diff |
| v0.11.0 | 2026-09-18 | f6cca9c | 13,188 B | A | view · diff |
| v0.10.0 | 2026-09-18 | 115018c | 13,188 B | A | view · diff |
| v0.10.0 | 2026-09-17 | d7c66a5 | 13,013 B | A | view · diff |
| v0.10.0 | 2026-09-16 | e50ebc3 | 12,907 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13642 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nanako0129/sepia · 2,832 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_sjykabozg4afj6ua GET https://markdownregistry.com/api/v1/resolve?ref=nanako0129/sepia/sepia GET https://markdownregistry.com/api/v1/blob/b04e1eb2c58228bfefad356f4d891d3624ed575a2028ba19095608cdabc1fbcf
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.