second-brain-write SKILL.md skillA
second-brain-write 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-write@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-write/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260908.1615b29, committed Sep 8, 2026
- Size
- 1,919 bytes
- Repository stars
- 1,499
- License
- MIT
Draft from the vault: outline from concept pages, keep citations to the user's own sources, and surface where their material disagrees. Use this skill when the user wants to write an article, post, essay or newsletter based on what they have collected, or asks what they could write about a topic. Do NOT use for research reports, for writing with no grounding in the vault, or for editing text the user wrote themselves unless asked.
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
# Write from the vault The research is already done, cited and connected. What is left is the argument, and that is the part the user should keep. ## Core rule Assemble structure and evidence. Do not hand back finished prose as if it were theirs. ## Workflow 1. **Find the relevant concept pages** and say what they collectively argue. 2. **Surface the disagreements.** These are where the user has something to say that is not the consensus view, and they are the most useful part of the outline. 3. **Build the outline** from pages, each point tied to the page behind it. 4. **Mark the weak points:** claims resting on one source, self-reported figures, anything the vault flags as unverified. 5. **Draft only if asked,** and say plainly that the phrasing is a first pass to be rewritten in their voice. 6. **Offer to ingest the finished piece** back as a source once published. ## Output format ``` Angle: <what this piece argues that the sources do not individually> Outline: 1. <point> - [[page]], [[page]] Weak points: <claims with thin support> Missing: <what would strengthen it> ``` ## Calibration …
Read the whole file at its exact version.
How to install
mdr add undefined-ui/second-brain-os/second-brain-write@sha256:223b87fc891396a3The 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_7xwqq4iuz52ziprr)
3 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 (1919 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_7xwqq4iuz52ziprr GET https://markdownregistry.com/api/v1/resolve?ref=undefined-ui/second-brain-os/second-brain-write GET https://markdownregistry.com/api/v1/blob/223b87fc891396a3a35425fa7e6f43fe7ab47ce1ca3f6dc372f41de2b8ac531c
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.