second-brain-metrics skillA
second-brain-metrics is agent-read markdown (skill) from undefined-ui/second-brain-os: Record a dated snapshot of the vault's health numbers and compare against previous snapshots so trends are visible. Use this skill for a monthly or quarterly check, when the user asks whether the vault is improving, or asks to track its numbers over time. Do NOT use for a one-off graph analysis, which is second-brain-graph, or for structural repairs..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Record metrics A single reading tells you almost nothing. Direction over months is the information, and nobody remembers what last quarter's orphan rate was. ## Core rule Four numbers, appended to a dated log, compared against the last entry. Never page count or word count. ## Workflow 1. **Run** `scripts/vault_stats.py` and `scripts/link_check.py`. 2. **Record:** orphan rate, average degree, component count, stale-concept rate, with the date and total pages for context. 3. **Append** to the metrics note. Never overwrite previous entries. 4. **Compare** against the last snapshot and name what moved. 5. **Interpret only what changed.** A stable number needs no commentary. ## Output format ``` <date> | pages <n> orphan rate <n>% (<+/-n> since <date>) avg degree <n> (<+/-n>) components <n> (main <n>%) stale concepts <n>% (<+/-n>) Moved: <what changed and the likely cause> Watch: <the one number to fix, or none> ``` ## Calibration A rising orphan rate with a rising page count means ingestion has stopped linking. That is the single most important pattern in this report and it should be called out explicitly, not left in the numbers. …
Read the whole file at its exact version.
How to install
mdr add undefined-ui/second-brain-os/second-brain-metrics@git:20260908.1615b29mdr add undefined-ui/second-brain-os/second-brain-metrics@sha256:8fa637b5d5b17e20Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_up7kai446hlknxdj)
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Versions
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 (1697 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 · 296 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_up7kai446hlknxdj GET https://markdownregistry.com/api/v1/resolve?ref=undefined-ui/second-brain-os/second-brain-metrics GET https://markdownregistry.com/api/v1/blob/8fa637b5d5b17e2057c0639783898092d8917838bf50f1d6e2904d5af6cc7483
Your agent 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.