Real AI agent use cases, with sources and setup prompts

Keep a Karpathy-style LLM wiki your agents maintain in Git

Built a Markdown-and-Git wiki in the Karpathy style that coding agents maintain for you.

Free tier2-4 hoursIntermediateSource linked

Source

najmuzzaman on Hacker News · 2026-04-25 · Project link

Written in our own words. Credit to the original author. Link checked 2026-10-15.

What they did

Built a Markdown-and-Git wiki in the Karpathy style that coding agents maintain for you.

Result (as claimed)

Open-sourced as a Show HN project.

Tools they used

Claude CodeOpenAI CodexCursor

Cost: Claude Code: free plan, paid from $17/mo; OpenAI Codex: free plan, paid from $8/mo; Cursor: free plan, paid from $8/mo. Checked 2026-10-14.

Set it up

  1. Gather your sources

    Collect the papers, notes, links or files you want to work from in one place.

  2. Load them into the tool

    Open Claude Code, OpenAI Codex, Cursor and add your sources. Keep the original files so you can check claims later.

  3. Ask focused questions

    Ask for summaries, comparisons or connections with citations to the source passages.

  4. Verify and save

    Spot check claims against the sources, then save the output as notes you can reuse.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Keep a Karpathy-style LLM wiki your agents maintain in Git
What the original author did: Built a Markdown-and-Git wiki in the Karpathy style that coding agents maintain for you.
Reported result (as claimed by the author): Open-sourced as a Show HN project.
Source: https://news.ycombinator.com/item?id=47899844
Tools they used: Claude Code, OpenAI Codex, Cursor
Category: Research & learning

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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