Real AI agent use cases, with sources and setup prompts

Let an agent find the best deal and check out for you

Needing wired headphones, the author handed the job to Agent Vault by Self, which found the best deal in Portugal and checked out with their card in about five minutes.

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Source

@GigaHierz on X · 2026-10-16

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

What they did

Needing wired headphones, the author handed the job to Agent Vault by Self, which found the best deal in Portugal and checked out with their card in about five minutes.

Result (as claimed)

Order placed in about 5 minutes.

Tools they used

Agent Vault

Cost: Pricing depends on the tools you pick; check each official pricing page.

Set it up

  1. Define the job

    Say exactly what you want done and what the agent may and may not do on your behalf.

  2. Share only what is needed

    Give Agent Vault the minimum files or access required. Avoid sharing passwords in chat when a safer login flow exists.

  3. Review the plan

    Ask the agent to show its plan or draft before it acts, and approve each step that has real consequences.

  4. Check the result

    Confirm the outcome yourself (order placed, request sent, document understood) and keep a record.

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: Let an agent find the best deal and check out for you
What the original author did: Needing wired headphones, the author handed the job to Agent Vault by Self, which found the best deal in Portugal and checked out with their card in about five minutes.
Reported result (as claimed by the author): Order placed in about 5 minutes.
Source: https://x.com/GigaHierz/status/2111078214755897633
Tools they used: Agent Vault
Category: Personal & life

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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