library-rag SKILL.md skillA
library-rag from moonlight-lupin/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add moonlight-lupin/agent-skills/library-rag@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- moonlight-lupin/agent-skills
- Path
research/library-rag/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0.0, committed Aug 13, 2026
- First version recorded
- Jul 8, 2026
- Size
- 19,331 bytes
- Repository stars
- 119
- License
- MIT
Semantic search over a personal library using Nemotron-3-Embed-1B embeddings + sqlite-vec. Index books, documents, any text corpus; query by meaning. Includes EPUB→Markdown conversion and MCP server for auto-available search tools.
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
# Library RAG
Semantic search over `~/.hermes/library/` using Nemotron-3-Embed-1B embeddings (via NVIDIA NIM) stored in sqlite-vec. Enables meaning-based retrieval across any text corpus — books, documents, reference works — in any language.
## Architecture
```
NVIDIA NIM API (nemotron-3-embed-1b, 2048-dim)
│
▼
~/.hermes/library/rag_index.db (sqlite-vec)
├── chunks table — text + metadata (source, book, chapter, section)
├── vec_chunks table — L2-normalized vector embeddings
└── indexed_files — SHA-256 hash tracking for incremental updates
MCP Server (mcp_server.py)
├── search(query, top_k, source_type) — semantic search, auto-available
├── stats() — index statistics
└── add_book(file_path, ...) — EPUB/PDF → md → index in one call
```
## Onboarding workflow (run this the first time a user sets up the skill)
When a user wants to start using Library RAG, walk them through this sequence.
Use `AskUserQuestion` for the decisions marked **ASK** — don't assume paths or
silently create directories outside the home folder.
### Step 1 — Check prerequisites
```bash
…Read the whole file at its exact version.
How to install
mdr add moonlight-lupin/agent-skills/library-rag@sha256:5db12af0f4616564The line at the top of this page pins the label v1.0.0, 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_jktrxivz5qnpayub)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 8, 2026 and Aug 13, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-08-13 | 17f8c65 | 19,331 B | A | view · diff |
| v1.0.0 | 2026-08-13 | 5cfff30 | 18,806 B | A | view · diff |
| v1.0.0 | 2026-08-13 | 090474f | 18,486 B | A | view · diff |
| v1.0.0 | 2026-07-08 | 52f1cb9 | 18,468 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 (19331 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
moonlight-lupin/agent-skills · 119 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jktrxivz5qnpayub GET https://markdownregistry.com/api/v1/resolve?ref=moonlight-lupin/agent-skills/library-rag GET https://markdownregistry.com/api/v1/blob/5db12af0f46165642470a238b61b43aa2d4d4d973d3c544ae3fe40de5af3b2d0
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.