Real AI agent use cases, with sources and setup prompts

Build your own cold outreach tool with Claude Code

A solo founder shipped v2 of his cold outreach tool, built entirely with Claude Code, so it sends emails for him while he works on other projects.

$17/moDaysIntermediateSource linked

Source

@promsk8er on X · 2026-10-18

Written in our own words. Credit to the original author. Link checked 2026-10-18.

What they did

A solo founder shipped v2 of his cold outreach tool, built entirely with Claude Code, so it sends emails for him while he works on other projects.

Result (as claimed)

v2 shipped.

Tools they used

Claude Code

Cost: Claude Code: from $17/mo.

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. 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: Build your own cold outreach tool with Claude Code
What the original author did: A solo founder shipped v2 of his cold outreach tool, built entirely with Claude Code, so it sends emails for him while he works on other projects.
Reported result (as claimed by the author): v2 shipped.
Source: https://x.com/promsk8er/status/2111756080283832599
Tools they used: Claude Code
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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Guides for this use case

How to vibe code an app with Claude Code

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