Real AI agent use cases, with sources and setup prompts

Policy enforcement for Claude Code, Cursor, and Codex

Shipped Policy enforcement for Claude Code, Cursor, and Codex and shared it as a Show HN.

Free tier1-2 hoursIntermediateSource linked

Source

carlosjimenez1 on Hacker News · 2026-07-09 · Project link

Written in our own words. Credit to the original author. Link checked 2026-10-16.

What they did

Shipped Policy enforcement for Claude Code, Cursor, and Codex and shared it as a Show HN.

Result (as claimed)

Launched publicly; listed on Show HN.

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. Pick one goal and metric

    For example replies to outreach, ad ideas per week or landing page conversion.

  2. Set up the tools

    Open Claude Code, OpenAI Codex, Cursor. Load your offer, audience and examples of what already works.

  3. Generate, then review

    Have the agent research and draft. You approve every message, post or ad before it goes out.

  4. Measure and iterate

    Track the metric for a week, keep what works and feed the results back into the prompt.

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: Policy enforcement for Claude Code, Cursor, and Codex
What the original author did: Shipped Policy enforcement for Claude Code, Cursor, and Codex and shared it as a Show HN.
Reported result (as claimed by the author): Launched publicly; listed on Show HN.
Source: https://news.ycombinator.com/item?id=48847526
Tools they used: Claude Code, OpenAI Codex, Cursor
Category: Marketing & growth

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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