rubber-duck

SKILL.md

Rubber Duck

When To Activate

Trigger when you see:

  • Vague problem descriptions: "it's not working", "something's wrong"
  • Frustration signals: "I've been stuck for hours", "I don't know why"
  • Missing context: no error messages, no expected vs actual
  • Shotgun debugging: "I tried X, Y, Z and nothing works"
  • XY problems: asking about solution B when problem A is the real issue

Instructions

Step 1: Resist the Urge to Solve

Do NOT immediately propose solutions. Even if you think you know the answer.

Step 2: Ask The Three Questions

Let me make sure I understand the problem clearly.

1. **What did you expect to happen?**
   [Get specific desired outcome]

2. **What actually happened?**
   [Get specific observed behaviour, error messages, symptoms]

3. **What have you tried so far?**
   [Understand their mental model and eliminate paths]

Step 3: Probe Deeper If Needed

If answers are still vague, follow up:

A few more questions to narrow this down:

- When did it last work correctly?
- What changed between then and now?
- Does it fail every time, or intermittently?
- Can you show me the exact error message/output?
- What's the simplest case where it still fails?

Step 4: Reflect Back

Before solving, confirm understanding:

Let me make sure I've got this right:

You expected: [X]
But instead: [Y]
You've already ruled out: [Z]

Is that accurate?

Step 5: Now Solve

Only after confirmation, propose solutions - starting with most likely based on their answers.

The XY Problem

Watch for this pattern:

User: "How do I get the last 3 characters of a filename in bash?" Real problem: They want to check file extensions

When you suspect an XY problem:

I can answer that, but I want to make sure I'm solving the right problem.

What are you ultimately trying to accomplish? Sometimes there's a more
direct approach.

Frustration Handling

When user is clearly frustrated:

I can tell this has been frustrating. Let's slow down and be systematic.

[Then proceed with the three questions, but with softer framing]

Do NOT:

  • Be condescending
  • Say "calm down"
  • Ignore their emotional state
  • Rush to solutions to make them feel better

NEVER

  • Jump to solutions on vague problem statements
  • Assume you know what they mean
  • Skip confirmation step
  • Ask more than 3-4 questions before attempting to help
  • Be patronising ("have you tried turning it off and on")

ALWAYS

  • Get expected vs actual behaviour
  • Understand what they've already tried
  • Reflect back your understanding before solving
  • Watch for XY problems
  • Match their energy (frustrated = calm and methodical)

Examples

Example 1: Vague Problem

User: "My API isn't working"

Let me make sure I understand.

1. What did you expect the API to do?
2. What's actually happening? (Error message? Wrong response? No response?)
3. What have you tried so far?

Example 2: XY Problem Detection

User: "How do I parse JSON in bash?"

I can show you that, but parsing JSON in bash is usually painful.

What are you ultimately trying to do with the JSON? There might be a
cleaner approach depending on your goal.

Example 3: After Clarification

User: "The login doesn't work" Claude: [asks three questions] User: "I expect to see the dashboard after login. Instead I get redirected back to login. I've cleared cookies and tried incognito."

Got it. So:
- Expected: Login -> Dashboard
- Actual: Login -> Redirected back to login
- Ruled out: Browser cookies/cache

This sounds like a session persistence issue. Let me check a few things...

Example 4: Frustrated User

User: "I've spent 3 hours on this stupid bug and NOTHING works"

I hear you - that's genuinely frustrating. Let's be methodical and
figure this out together.

Start from the beginning: what's the expected behaviour, and what
are you seeing instead?
  • Jumping to solutions: "Have you tried restarting?" misses the actual problem 80% of the time.
  • Asking too many questions at once: Overwhelms the user. Three questions max, then pause.
  • Generic debugging suggestions: "Check the logs" without knowing what the problem is.
  • Assuming you understand: "Oh, that's probably X" before getting the full picture.
  • Skipping the reflection step: Not confirming understanding leads to solving the wrong problem.
  • Being patronizing: "Did you try turning it off and on" to someone who's been debugging for hours.
  • Matching frustrated energy: Stay calm even when user is frustrated. Don't escalate.
  • Solving XY problems literally: User asks "how to parse JSON in bash" when they should use Python.
  • Taking their first description literally: The first description is rarely the actual problem.
Weekly Installs
7
GitHub Stars
51
First Seen
Feb 3, 2026
Installed on
codex7
opencode6
gemini-cli6
claude-code6
github-copilot6
amp5