Category: Development

Parallel Debugging

Debugs with Analysis of Competing Hypotheses, investigating several root-cause candidates in parallel and arbitrating with evidence.

Works with

Generates hypotheses across six failure modes such as logic, data, state, and integration
Investigates hypotheses in parallel with separate agents
Arbitrates the root cause from evidence, avoiding confirmation bias

Use it when a bug has several plausible causes and early debugging attempts failed.

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/wshobson/agents --skill parallel-debugging

To install manually, download the parallel-debugging skill folder from the GitHub repository and copy it into your agent's skills folder, such as ~/.claude/skills/ or .cursor/skills/.
Ask your agent for a related task and the skill is used automatically.

Development
Karpathy Coding Guidelines
Reduces common LLM coding mistakes Andrej Karpathy pointed out by enforcing explicit assumptions, simplicity, and surgical changes.
Development
Security Audit (Cloudflare)
Cloudflare's skill for finding vulnerabilities that cross real trust boundaries, with evidence, safe repro, priority, and minimal fixes.
Development
API and Interface Design
From Addy Osmani of Google Chrome: design stable APIs and module boundaries that are hard to misuse.
Development
Browser Testing with DevTools
Gives agents eyes into a real browser via Chrome DevTools MCP to inspect the DOM, console, network, and performance.