second-brain-review SKILL.md skillA
second-brain-review from undefined-ui/second-brain-os is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add undefined-ui/second-brain-os/second-brain-review@git:20260907.8c47c65Pins git:20260907.8c47c65 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- undefined-ui/second-brain-os
- Path
skills/second-brain-review/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260907.8c47c65, committed Sep 7, 2026
- Size
- 2,200 bytes
- Repository stars
- 1,499
- License
- MIT
Produce a periodic review of a second-brain vault: what was added, which topics are growing, what contradicts what, which questions are still open, and what is worth reading next. Use this skill whenever the user asks for a weekly or monthly review, asks what changed in their vault, what they have been learning about lately, or what they should look at next, and when a scheduled review task fires. Do NOT use for structural linting, for ingesting sources, or for answering a specific factual…
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
# Review the vault Capture systems fail at the point where nothing comes back out. A review is the loop that closes: it turns a week of ingestion into something the owner reads and acts on, and it is what makes the vault feel alive rather than archival. ## Core rule A review reports on the vault, not on the agent's activity. Nobody needs to know how many tool calls ran; they need to know what they now know. ## Workflow 1. **Diff the period.** New and updated pages since the last review, from `log.md` and frontmatter dates. 2. **Find the clusters.** Which concepts gained the most links. That is where the owner's attention actually went, which is often not where they think it went. 3. **Surface contradictions** recorded during the period and still unresolved. 4. **List open questions** from concept and synthesis pages. 5. **Find the neglected.** Pages linked often but thin, or gaps in `index.md` that keep getting referenced. 6. **Recommend three things to read or write next**, each tied to a specific page. ## Output format ``` ## Week of <date> Added: <n> pages, <n> sources ingested ### Where your attention went <two or three sentences on the clusters> …
Read the whole file at its exact version.
How to install
mdr add undefined-ui/second-brain-os/second-brain-review@sha256:da3299a53949d27aThe line at the top of this page pins the label git:20260907.8c47c65, 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_eji3kpom5yhxp4ft)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 7, 2026.
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 (2200 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
undefined-ui/second-brain-os · 1,499 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_eji3kpom5yhxp4ft GET https://markdownregistry.com/api/v1/resolve?ref=undefined-ui/second-brain-os/second-brain-review GET https://markdownregistry.com/api/v1/blob/da3299a53949d27a58262b542773cfb5571e2e8d3b056d5b47ad52617097fa15
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.