Spend leftover Claude and Codex quota on small pull requests
A founder built a bot that turns spare subscription tokens into pull requests for small tasks he never gets around to.
Developer use cases
Real things people did with Developer work, sourced and with recipes.
Use cases
Let Claude control a music notation app over MCP
A developer built an iPad and Mac notation editor that Claude Code or Claude Desktop can drive.
Drive coding agents from Telegram and resume after usage limits
A developer built nightmux to control Claude Code agents from Telegram and auto-resume past usage limits overnight.
Run a fleet of coding agents like a teaching hospital
Two Cockroach Labs engineers turned GitHub issues into 'patients' handled by agent roles (triage nurse, fellow, reviewing attending, discharge nurse) and shipped production code for five months.
Decompile a classic shooter with a swarm of coding agents
Over three months, a developer and community helpers had up to 16 Claude Code and Codex agents rebuild an old first-person shooter as readable C++ that runs without noticeable bugs.
Let your agents draw arrows and boxes on your screen
A developer made a tool so coding agents can point at things on your screen with big arrows, boxes and text.
Make Claude’s replies half as long with a plugin
A developer annoyed by long, filler-heavy replies built a Claude Code plugin that cuts them.
Rebuild SimCity 2000 as a low-poly web game with 27 subagents
A developer had Opus 5.5 decompile SimCity 2000 with Ghidra and port it function by function to TypeScript and WebGL over a few days.
Have Claude Code review your requirements against your roadmap
A developer found Claude Code more useful for reviewing requirements than writing them.
Build a casino into Claude Code’s thinking spinner
A developer used Claude Code’s new mods to add blackjack, roulette and slots while Claude thinks.
Cap spending before you let a coding agent spawn sub-agents
A developer reports that a simple UI review task in Codex spawned 826 child tasks and roughly $78,000 in usage without his approval.
Stop your agent before it signs a contract for you
A developer reports Claude Code found a contract in his Gmail, placed his saved signature on it and was about to send it when he stopped it.
Red-team your support agent with multi-turn attacks before launch
A team built a support agent and tried to break it; by turn 8 it approved a $185 refund for an order that did not exist.
Make Rust libraries faster by looping agents against benchmarks
A data scientist got agents to write Rust ML and utility crates that beat established libraries on speed by giving them benchmark targets and strict anti-cheating rules.
Agree on PR rules before a teammate sends a 5,000-line vibe-coded PR
A developer wrote about his business partner sending a 5,000-line vibe-coded PR he had not tested.
Let users file bug reports through an AI that dedupes and writes the ticket
A team runs an AI tool that checks for duplicates, writes up the ticket and submits it, using MCP to talk to their tracker.
Scrape every UK council planning portal with Claude and monitor it over MCP
A developer built a planning-applications scraper for every UK local planning authority with Claude, then added an MCP view of scraper health.
Give customer-facing voice agents one MCP server for scheduling and order status
A company points any voice agent platform at its own MCP server so agents can book appointments and check orders for customers.
Ask an AI about 25 years of your own social media history
A developer merged decades of social media backups into one timeline and added an MCP server to query it with an LLM.
Debug user issues in minutes with Claude, observability and read-only DB access
A developer connects Claude to dash0, Linear and a read-only production database, and opened an MCP over their own GraphQL API.
Let hosting customers debug and deploy sites by asking Claude or Cursor
A UK managed-hosting company launched an MCP for its control panel so users can ask why a site errors or deploy a project.
Give non-technical admins CMS stats and edits through an MCP
A developer built an MCP so admins can work with the CMS and get statistics from their AI client.
Turn plans into tickets on your own board, even by voice on a walk
A developer has Claude split feature plans into small tickets on his self-made board, which his phone assistant can also add to.
Add missing tools to your Home Assistant voice assistant with MCP
A developer built an MCP server for his Home Assistant voice assistant with jokes, math, unit conversion, stocks and Kagi search.
Sync your email into SQLite so agents can search it in milliseconds
A developer syncs his Microsoft mail into a local SQLite database exposed read-only to his agent.
Give your agent access to Apple Calendar, Reminders, Contacts and Mail
A developer built a CLI, MCP and plugins so his OpenClaw agent, Codex and Claude can use Apple’s personal apps.
Watch user sessions, find real bugs and open only verified fixes
A former Robinhood engineer built an open-source agent that investigates user-facing issues and opens a PR only when it can verify the fix.
Migrate 12-year-old .NET code to .NET 10 with Claude Code
A developer used Claude Code to move a 2014 TCP sockets project to .NET 10.
Give Claude Code a searchable text memory of your screen
A developer built a menu bar app that saves the text of your focused window to daily Markdown files Claude Code can read.
Turn an HDR image trick into a web tool with Claude Code
A developer worked with Claude Code to turn the gain-map trick behind extra-bright logos on HDR screens into a small web tool.
Pause your music when Claude Code needs you
A developer made Spotify pause whenever Claude Code needs input and resume when you answer.
The Daily 5.
Five real AI agent use cases each morning, each with a recipe and a source. Plus a Sunday roundup. Free.