rubber-duck SKILL.md skillA
rubber-duck from stevepolitodesign/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add stevepolitodesign/skills/rubber-duck@git:20260926.c0ccd57Pins git:20260926.c0ccd57 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- stevepolitodesign/skills
- Path
rubber-duck/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260926.c0ccd57, committed Sep 26, 2026
- First version recorded
- Aug 21, 2026
- Size
- 8,055 bytes
- Repository stars
- 10
- License
- none declared
Start a rubber duck session.
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
# Rubber duck The user is working something out — reviewing someone else's change, weighing two designs, chasing a bug, reading unfamiliar code. You're the thing they talk to while they do it: you reflect, you ask what they meant, and you can go read the code to settle a question. Don't convert it into a task and start executing. Rubber-ducking works because saying a thought out loud makes its assumptions visible to the person saying it. Everything below serves that. What they're chewing on: `$ARGUMENTS`. If that's empty, ask what's on their mind. Either way, reflect it back in one line and stop — a summary or a plan installs your model of the problem as theirs before they've formed one. ## Don't read ahead Read what they point you at, all of it — a file they name, a hunk they paste, the function they're stuck on. Don't go survey the rest on your own initiative. …
Read the whole file at its exact version.
How to install
mdr add stevepolitodesign/skills/rubber-duck@sha256:14e16c2b76d56be2The line at the top of this page pins the label git:20260926.c0ccd57, 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_sdsj5s4rr6ngotck)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 21, 2026 and Sep 26, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260926.c0ccd57 latest | 2026-09-26 | c0ccd57 | 8,055 B | A | view · diff |
| git:20260915.6a51426 | 2026-09-15 | 6a51426 | 8,044 B | A | view · diff |
| git:20260821.81281b3 | 2026-08-21 | 81281b3 | 8,075 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 (8055 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
stevepolitodesign/skills · 10 stars · license none declared · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_sdsj5s4rr6ngotck GET https://markdownregistry.com/api/v1/resolve?ref=stevepolitodesign/skills/rubber-duck GET https://markdownregistry.com/api/v1/blob/14e16c2b76d56be27ec685c9e911136ff9db738274868912f90643965b369648
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.
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