Real AI agent use cases, with sources and setup prompts

Build a litter-picking robot with Codex

A builder made MOSS, a litter-picking robot, using hardware and Codex, and shared how he built it.

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Source

@metrox_eth on X · 2026-10-18

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

What they did

A builder made MOSS, a litter-picking robot, using hardware and Codex, and shared how he built it.

Result (as claimed)

Robot build write-up shared.

Tools they used

OpenAI Codex

Cost: OpenAI Codex: free plan, paid from $8/mo. Checked 2026-10-14.

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 OpenAI Codex 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: Build a litter-picking robot with Codex
What the original author did: A builder made MOSS, a litter-picking robot, using hardware and Codex, and shared how he built it.
Reported result (as claimed by the author): Robot build write-up shared.
Source: https://x.com/metrox_eth/status/2111636724678090778
Tools they used: OpenAI Codex
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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Guides for this use case

How to run multiple coding agents together

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