pin skillA
pin is agent-read markdown (skill) from mubit-ai/plugins: Pin a constraint for the rest of this run, shown on every prompt; use when a rule ends with the task, and remember for anything durable..
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
**This skill never installs anything.** It runs one Node process from the plugin directory,
which writes a run-scoped variable to the user's own Mubit instance. No packages, no services,
no changes to the shell.
## Step 0 — resolve the binary
No environment variable carries this plugin's path under Codex. Codex lists each skill with the
absolute path of its `SKILL.md`; **this file** is at `<plugin-root>/skills/pin/SKILL.md`, so
the binary is two directories above it:
```
<plugin-root>/bin/pin.mjs
```
Resolve that to an absolute path from this file's own location and use it in every command
below. Do not write `${CLAUDE_PLUGIN_ROOT}`: Codex sets no plugin-root variable of any
spelling, so the shell expands it to nothing and `node /bin/pin.mjs` fails with ENOENT.
## What a pin is
A pin is a sentence that is true for **this run and this task**, injected in full above the
recalled memory on every prompt until it is cleared.
> for the rest of this, don't touch the vendored server
You are who notices a sentence like that. Before pinning existed, the only place to put it was
memory — so it was written as a *lesson*, and a lesson is durable and cross-session. It would
…Read the whole file at its exact version.
How to install
mdr add mubit-ai/plugins/pin@git:20260903.008c305mdr add mubit-ai/plugins/pin@sha256:12a66cfad452b16cPin 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_4qkj3xccp4cufw2p)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260903.008c305 latest | 2026-09-03 | 008c305 | 5,034 B | A | view · diff |
| git:20260824.aeea6b7 | 2026-08-24 | aeea6b7 | 5,370 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 (5034 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
mubit-ai/plugins · 3 stars · license Apache-2.0 · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4qkj3xccp4cufw2p GET https://markdownregistry.com/api/v1/resolve?ref=mubit-ai/plugins/pin GET https://markdownregistry.com/api/v1/blob/12a66cfad452b16cbbd81720588d17165bf098e49c4b952382e4cc3326267081
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.
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