Agent Skills Hub

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What are agent skills?

Agent skills package instructions, scripts, and reference material into a single folder (SKILL.md) so an AI agent can perform a specific task better. Claude, ChatGPT/Codex, Cursor, Gemini CLI, and GitHub Copilot all support the same format.

About this site

We collect skills from across the web and show which agents they work with and how to install them. Each skill belongs to its original author, and we always link to the source.

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Category: Development

Diagnosing Bugs

A diagnosis loop for hard bugs and performance regressions.

Works with

What it does

  • A discipline for hard bugs. Skip phases only when explicitly justified.
  • When exploring the codebase, read GLOSSARY.md (if it exists) to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.
  • If the redacted output is not enough to diagnose the bug, say so and ask the user.
  • Phase 1: Build a feedback loop

When to use it

A diagnosis loop for hard bugs and performance regressions.

How to install

  1. Run the command below in your terminal. Pick the agents you use (Claude Code, Codex, Cursor, Gemini CLI, Copilot, and more) and it installs into the right folder.
npx skills add https://github.com/mattpocock/skills --skill diagnosing-bugs
  1. To install manually, download the diagnosing-bugs skill folder from the GitHub repository and copy it into your agent's skills folder, such as ~/.claude/skills/ or .cursor/skills/.
  2. Ask your agent for a related task and the skill is used automatically.
View source ↗

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