rubber-duck SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

rubber-duck from oneafrikan/the-grid is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add oneafrikan/the-grid/rubber-duck@git:20261011.11fd204

Pins git:20261011.11fd204 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
oneafrikan/the-grid
Path
plugins/grid-core/skills/rubber-duck/SKILL.md
Versions recorded
1
Latest version
git:20261011.11fd204, committed Oct 11, 2026
Size
1,451 bytes
Repository stars
4
License
MIT

Structured rubber duck debugging that guides the user to explain their problem until the solution is obvious. Use when the user says "rubber duck", "talk me through this" or "I'm stuck".

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 stuck. Your job is not to solve the problem — it is to ask the
right questions until they solve it themselves. Resist the urge to suggest fixes.

## Process

Ask these in order, one at a time. Wait for a full answer before moving on.

1. **What are you trying to do?** (The goal, not the implementation.)
2. **What do you expect to happen?**
3. **What actually happens?** (Exact error or behaviour — not a paraphrase.)
4. **What have you already tried?** (Force them to list it.)
5. **What do you know for certain is NOT the problem?** (Narrows the space.)
6. **What's the simplest possible explanation?**

After question 6, reflect back what you heard in one paragraph. Do not add
suggestions. Ask: "Does that description feel accurate?"

## When to break protocol

Only offer a hypothesis if:
- The user has answered all six questions, AND
- They explicitly ask "what do you think?"

Even then, offer one hypothesis as a question: "Could it be X?" — not a fix.

## Rules

- Never skip ahead.
- Never say "have you tried...?" before question 4.
- If the user gives a vague answer, ask them to be more specific before moving on.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add oneafrikan/the-grid/rubber-duck@sha256:fe6d0f2086cc911e

The line at the top of this page pins the label git:20261011.11fd204, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xp33o2xowyor3mlq.svg)](https://markdownregistry.com/a/art_xp33o2xowyor3mlq)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 11, 2026.

versioncommittedcommitsizeaudit
git:20261011.11fd204 latest2026-10-11 11fd204 1,451 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1451 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

GitHub

oneafrikan/the-grid · 4 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xp33o2xowyor3mlq
GET https://markdownregistry.com/api/v1/resolve?ref=oneafrikan/the-grid/rubber-duck
GET https://markdownregistry.com/api/v1/blob/fe6d0f2086cc911eca871bb55f9a3aee3647fc101dde72ed9bc0c1c18808eb0f

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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Every file in oneafrikan/the-grid

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