Real AI agent use cases, with sources and setup prompts
What people actually built and handled with ChatGPT, alone or alongside Claude, Codex and other tools. 24 matching use cases below, each with a public source.
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A creator made a full ad concept with AI in about 10 minutes: script in ChatGPT, visuals in Higgsfield and the edit in CapCut. He says it used to be a 2-day job.
A parent built a Midtown Madness-style driving game set in Chicago for his daughter in a week: Claude did the frontend and design, ChatGPT the backend, performance and multiplayer, ElevenLabs the music and sound effects, and Tripo the cars.
Tired of re-explaining his job, clients and writing style every time he switched between ChatGPT and Claude, a consultant moved that context into a folder of files (about him, his clients and more) that any model can read.
A software engineer with zero game dev experience built a game with ChatGPT, Claude, Godot, Tripo, Blender MCP and ElevenLabs, and published the full workflow as a free playbook.
Stoke Money finds paychecks, rent and bills in your history and projects every account forward day by day. On its Pro plan you connect Claude, ChatGPT or another MCP assistant, which reads your forecast and can categorize transactions and draft plans, for example checking whether a December trip fits.
A creator set up the CapCut plugin through CapCut Web and ChatGPT, then uses Codex to turn editing ideas into a clear workflow that trims pauses, keeps the original voice and adds edits.
The author gave their Grok Bot its own email address, so ChatGPT can email it task requests.
Asked to review all subscriptions, Grok Bot found things the author missed, such as Revolut Premium already including ChatGPT they had been paying $20 for.
A business owner made a skill on Claude and ChatGPT that goes through client call transcripts, pulls the important details into Notion and reuses the client's own words to create content.
Built a ChatGPT and Claude plugin that helps apply to jobs from inside the chat interface.
The author combined Linux, Hermes Agent, a ChatGPT subscription and Signal into a personal Jarvis with separate chats per job and a restricted bot the whole family can use.
Built a coding-agent skill that asks ChatGPT-style engines the questions buyers ask and reports which brands they name.
Built a Claude Code plugin that calls Codex image generation through your ChatGPT plan and saves images into the project.
The author set up 20 to 30 computers almost from scratch, handed control to ChatGPT or Grok Bot and managed them entirely by voice from a phone, for real tasks.
The author vibe-coded a tool that controls their computer to do things current harnesses cannot, and uses it from ChatGPT, Claude, Gemini and Grok Bot. When something is missing they tell Dots to add it.
Connect Calendly to Make so guest bookings flow into the rest of the podcast workflow automatically.
Built a Grok Bot that checks different AI assistants to see if his company's products are mentioned ahead of competitors.
Got ChatGPT and Claude to write LDraw, the format for Lego models, and built an open-source Lego generator.
Open-sourced a murder-board style panel that asks brutal prep questions before you present, for Claude Code, Codex, Cursor and ChatGPT.
Built Clawfight.ai for MCP-driven agentic game play.
A puzzle maker shipped Jigsaw Haiku, a jigsaw puzzle that reveals a haiku. Claude wrote all of the code while the author prodded it toward the look they wanted; the art was generated with Gemini and ChatGPT.
Built Mole, a deep research agent you run from the terminal.
Built a voice-driven murder mystery where you interview AI suspects with your voice.
Published a Show HN exploration of what GUIs for AI agents should look like, with concrete UI experiments.
How to make faceless YouTube videos with AI · How to automate work with n8n and AI · How to vibe code an app with Claude Code · How to build AI agents for SEO and ads · How to run multiple coding agents together · How to build an MCP server for AI agents · How to add memory to coding agents · How to secure vibe-coded apps and agents · How to observe and debug AI agents · How to build agent memory and context layers · How to control coding agents from your phone · How to add payments to vibe-coded apps · How to run local LLMs with AI agents · How to set up Grok Bot agents for real work · How to build with Gemini 4 Argon and Gemini agents · How to use AI agents for taxes, bills and budgets · How to make AI video ads and Reels with agents · How to set up Hermes Agent workflows · How to vibe code a game with AI · How to replace SaaS subscriptions with vibe-coded tools · How to use AI agents for errands, calls and shopping · How to use Cursor agents and automations · How to make 3D scenes and models with AI and Blender · How to use Claude Code skills and plugins · How to cut AI coding agent costs and token use · How to automate a small business with AI agents · How to compare AI models on the same prompt · How to build hardware projects with AI agents · How to make AI music videos and songs · How to use AI agents with Obsidian and your notes · How to build apps and games for your kids with AI · How to make AI agents ask for approval before they act
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