second-brain skillA
second-brain is agent-read markdown (skill) from calebnewtonusc/chewbacca: Read from and write to the user's personal context repo, the private markdown store holding who they are, what they are working on, who they work with, and how their systems are wired. Use when the user asks what you know about something, states a durable fact worth persisting (new role, project shipped or died, collaborator joined, preference, infrastructure change), says "remember this", asks for a context review, or when substantial work just changed something that context should reflect. Als.
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.
How to install
mdr add calebnewtonusc/chewbacca/second-brain@git:20260811.a4a16ebmdr add calebnewtonusc/chewbacca/second-brain@sha256:35db47d5f51a7f30Pin 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_fnyqebzcldkwkagh)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260811.a4a16eb latest | 2026-08-11 | a4a16eb | 5,186 B | A | view · diff |
| git:20260810.59f1e90 | 2026-08-10 | 59f1e90 | 4,906 B | A | view |
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 (5186 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
calebnewtonusc/chewbacca · 4 stars · license MIT · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fnyqebzcldkwkagh GET https://markdownregistry.com/api/v1/resolve?ref=calebnewtonusc/chewbacca/second-brain GET https://markdownregistry.com/api/v1/blob/35db47d5f51a7f308e54fb37e23d60dd4ce780b8f43ce54fd4981ed5c2bed380