Real Agent Cases

Diagnose why your Mac is running slow with Claude Code

Source date:
Last verified:
Method:
How we verify

Evidence: Article or interviewA newsletter, journalist or interview account of what happened.

Outcome

Anthony Roux uses Claude Code to check load, memory pressure, disk space, stuck processes and swap, dig into causes like caches, Docker and Time Machine snapshots, explain the results and suggest fixes with risk notes.

Agent

Claude Code

Prompt Recreated prompt

The source did not publish its exact prompt. This one is our reconstruction from what the source describes.

Not sure how to start? Tell me what you're trying to get done and I'll help you turn it into a clear request.

Goal: Find out why my Mac is running slow and tell me how to fix it.

Quick check first: When did it start, and is it slow all the time or only sometimes?

What I need from you:
- Your Mac, with permission for me to run read-only checks

Rules:
- Check load, memory, disk space, stuck processes and swap first.
- Explain what the numbers mean in plain language.
- For each fix, give the exact command and how risky it is.
- Don't delete or change anything without my OK.

Output: What's slowing it down, why, and a list of fixes from safest to riskiest.

If any of this is unclear, tell me what you have and I'll help fill the gaps.

You'll know it worked when: you know the cause and have a safe fix to try first.

Source

https://www.lennysnewsletter.com/p/everyone-should-be-using-claude-code

By Anthony Roux (via Lenny's Newsletter) · Published Oct 14, 2025 · Added Oct 16, 2026 · Last verified Oct 16, 2026

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