book-mirror SKILL.md skillA
book-mirror from garrytan/gbrain is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add garrytan/gbrain/book-mirror@v0.5.0Pins v0.5.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- garrytan/gbrain
- Path
skills/book-mirror/SKILL.md- Versions recorded
- 5
- Latest version
- v0.5.0, committed Oct 7, 2026
- First version recorded
- May 2, 2026
- Size
- 26,719 bytes
- Repository stars
- 31,587
- License
- MIT
Take any book (EPUB/PDF), produce a personalized chapter-by-chapter analysis. Each chapter is preserved in detail (The Chapter) and mirrored back to the reader's actual life (The Mirror) using brain context. The mirror observes and resonates — a friend pointing out parallels, NOT a consultant rearranging the reader's life, NOT a therapist assigning homework. The reader decides what to do about it. Layout is a top-aligned HTML table or stacked sections, never a bare markdown pipe table…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# book-mirror — Personalized Chapter-by-Chapter Book Analysis
> **Convention:** see [_brain-filing-rules.md](../_brain-filing-rules.md) for the
> sanctioned `media/<format>/<slug>` exception this skill files under.
>
> **Convention:** see [conventions/quality.md](../conventions/quality.md) for
> citation rules, back-link enforcement, and output quality bars.
>
> **Convention:** see [conventions/brain-first.md](../conventions/brain-first.md)
> for the lookup chain (brain → search → external) the context-gathering
> phase follows.
## What this does
Given a book (EPUB or PDF), produce a brain page where every chapter is
summarized in detail on one side ("The Chapter") and mirrored back to the
reader's actual life on the other ("The Mirror"), using their own words,
situations, people, and patterns from the brain. Output is a brain page at
`media/books/<slug>-personalized.md`.
This is NOT a generic book summary. The mirror is the value: it makes the
book read like a smart friend who happens to know the reader's life deeply
is pointing things out in the margins. The mirror's job is recognition —
"that's exactly me" — and then getting out of the way. If the user wants a
…Read the whole file at its exact version.
How to install
mdr add garrytan/gbrain/book-mirror@sha256:a173777133e85483The line at the top of this page pins the label v0.5.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_v3yleuaxmzos732o)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 2, 2026 and Oct 7, 2026, about one every 39 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.5.0 latest | 2026-10-07 | 590bb9a | 26,719 B | A | view · diff |
| v0.5.0 | 2026-10-04 | 739e5cc | 26,718 B | A | view · diff |
| v0.5.0 | 2026-08-12 | 3f22f51 | 25,916 B | A | view · diff |
| v0.1.0 | 2026-07-31 | 298b6b0 | 13,241 B | A | view · diff |
| v0.1.0 | 2026-05-02 | c2ae4db | 13,246 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 (26719 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
garrytan/gbrain · 31,587 stars · license MIT · pushed 2026-11-06 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_v3yleuaxmzos732o GET https://markdownregistry.com/api/v1/resolve?ref=garrytan/gbrain/book-mirror GET https://markdownregistry.com/api/v1/blob/a173777133e85483f6e41eb7c5b64bac0ba5a872aba5664dbdd535b658b2c5bf
Your AI assistant 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.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.