second-brain-merge SKILL.md skillA
second-brain-merge 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-merge@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-merge/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260908.1615b29, committed Sep 8, 2026
- Size
- 1,879 bytes
- Repository stars
- 1,499
- License
- MIT
Merge two pages that describe the same thing, preserving every distinct claim, redirecting inbound links, and recording the merge. Use this skill when the user approves a duplicate merge, says "these are the same page", "merge X into Y", or asks to clean up near-duplicates that a lint run proposed. Do NOT use to merge pages on your own judgement, to delete a page outright, or to split one page into several.
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
# Merge duplicate pages A merge is irreversible in the way that matters: afterwards you cannot tell which claim came from which page. Two ideas that look identical from their summaries are often a general case and a specific one. ## Core rule Never merge unprompted. Propose, wait for approval, then follow the procedure exactly. ## Workflow 1. **Pick the survivor** by canonical name, not by which page is longer. 2. **Merge content.** Every distinct claim survives with its source. Overlapping claims collapse; differing ones both stay, following the contradiction rules. 3. **Merge aliases,** including the dead page's title as an alias on the survivor. This is what keeps old links and the user's memory working. 4. **Redirect inbound links** to the survivor. Check every backlink. 5. **Delete the old page,** or leave a stub only if it was linked from outside the vault. 6. **Record in `log.md`:** both names, the date, and why. ## Output format ``` Merged: [[old]] -> [[survivor]] Claims kept from old page: <n> Aliases added: <list> Inbound links redirected: <n> Conflicts recorded: <none | description> ``` ## Calibration …
Read the whole file at its exact version.
How to install
mdr add undefined-ui/second-brain-os/second-brain-merge@sha256:9d5aa76e507a49faThe 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_3enpviplokf5nhgw)
5 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 (1879 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_3enpviplokf5nhgw GET https://markdownregistry.com/api/v1/resolve?ref=undefined-ui/second-brain-os/second-brain-merge GET https://markdownregistry.com/api/v1/blob/9d5aa76e507a49fa7b173adb07298252105eef147472894862c6fb623af3cc79
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.