second-brain-project SKILL.md skillA
second-brain-project 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-project@git:20260908.1615b29Pins git:20260908.1615b29 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-project/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260908.1615b29, committed Sep 8, 2026
- Size
- 2,007 bytes
- Repository stars
- 1,499
- License
- MIT
Set up or update a project in the vault: the four-stage folder pipeline, a project-scoped CLAUDE.md with one goal, and links to the concept pages it depends on. Use this skill when the user starts something new they will work on over time, says "create a project", "set up a folder for X", or asks to define the goal and structure of ongoing work. Do NOT use for one-off tasks, for wiki pages about a topic, or for scoping an existing project down to work in it.
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
# Set up a project The knowledge layer answers what you know. The project layer answers what you are doing this week. Merging them fills a wiki with dead task lists and buries working files under conceptual notes. ## Core rule One goal per project, stated in its own `CLAUDE.md`. A project with three goals is three projects. ## Workflow 1. **Interview if needed.** What this produces, for whom, by when, and what the agent's role is. Vague answers produce a file that makes every future session worse. 2. **Create the folders:** `Inputs/`, `Process/`, `Outputs/`, `Feedback/`. 3. **Write the project `CLAUDE.md`:** what this is, the one goal with a date, your role, working rules, current state. Name what the agent should not do here as well. 4. **Link the knowledge layer.** Find concept pages the project depends on and reference them from the project file. Copy into `Inputs/` only the few that genuinely matter. 5. **Register it** in the root `CLAUDE.md` project list. ## Output format ``` Project: <name> Goal: <one measurable outcome with a date> Folders created: Inputs, Process, Outputs, Feedback Concept pages linked: <list> Agent role: <one line> ``` …
Read the whole file at its exact version.
How to install
mdr add undefined-ui/second-brain-os/second-brain-project@sha256:5acef2d659a866bdThe line at the top of this page pins the label git:20260908.1615b29, 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_qypzlsgmezufr3l5)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 8, 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 (2007 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_qypzlsgmezufr3l5 GET https://markdownregistry.com/api/v1/resolve?ref=undefined-ui/second-brain-os/second-brain-project GET https://markdownregistry.com/api/v1/blob/5acef2d659a866bd11c886eb72c1e80affcd387f5b2c4291103ff57966c614d1
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.