mac-runtime skillA
mac-runtime is agent-read markdown (skill) from calebnewtonusc/chewbacca: Run a multi-step task on the Mac as a formal plan that is type-checked, executed, verified, and logged - instead of improvising bash step by step. Use for any task with more than two or three steps, anything that ends in an irreversible action (send, pay, post, submit), or anything the user will want to debug afterward. This is Chewbacca's agent runtime..
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/mac-runtime@git:20260904.ee0eb1bmdr add calebnewtonusc/chewbacca/mac-runtime@sha256:8dc1bee64b0d376ePin 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_4nkihsy3difnc6fe)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.ee0eb1b latest | 2026-09-04 | ee0eb1b | 3,531 B | A | view · diff |
| git:20260904.25a1d94 | 2026-09-04 | 25a1d94 | 3,512 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 (3531 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_4nkihsy3difnc6fe GET https://markdownregistry.com/api/v1/resolve?ref=calebnewtonusc/chewbacca/mac-runtime GET https://markdownregistry.com/api/v1/blob/8dc1bee64b0d376e7eb79c6ddd555a06a2bdc12cc718e55244864c51b21eb2af