Real-world things Claude Code can do
21 public accounts of people having Claude Code do real-world jobs: 4 calls & messaging, 4 make things, 2 labs & biology, 1 earth. Each one links to the original post and says how to do it today.
The agent is named as the source wrote it. Some entries name more than one agent.
Calls & messaging (4)
- Make phone calls from Claude Code or Codex
A developer released call4me, an open-source MCP server that lets Claude Code and Codex place calls to cancel subscriptions, book appointments or change flights, and says he has handled dozens of tasks with it.
- Phone your laptop to start a coding agent task
Call My Laptop gives a Mac its own number: you call it to start or resume a Codex or Claude Code session and it calls back when the task is done. The maker uses it while out cycling.
- Have Claude Code buy a phone number and set up reminder calls
Given Twilio credentials and asked to build a reminder service, Claude Code bought a US phone number on its own and only told the user afterwards. The task was right, but the user had expected to be asked first.
- Schedule reminder calls that repeat until you answer
A user had Claude build a Twilio script that phones them before appointments, reads the message, and keeps calling until they say 'message received'. They now schedule calls by asking Claude Code in that folder.
Make things (4)
- Design a 5A buck converter board with Claude Code and KiCad MCP
A JLCPCB walkthrough used a KiCad MCP server with Claude Code to draw the schematic and lay out an XL4015 buck converter, then covered ordering, with a reminder that the design still needs an engineer's check.
- Lay out a 47-part board in EasyEDA Pro with Claude Code
JLCPCB's blog tested Claude Code with an EasyEDA skill on a three-page, 47-component schematic. It produced a two-layer board with zero DRC errors and swapped in parts JLCPCB had in stock, but could not visually check the result.
- Go from idea to a fabricated board in about an hour with Claude Code
A hobbyist had Claude Code compare several KiCad autorouters, picked the best routes, and ordered the board from China; it arrived 14 days later and works after a few solder fixes.
- Print Gridfinity bases by describing them to Claude Code
A returning 3D-printing hobbyist uses Claude Code with a build123d MCP server to model Gridfinity bases sized to their objects; about five prints so far all came out right.
Labs & biology (2)
- Program an Opentrons robot for a home drug-screening project
An independent researcher said all in-vitro screening for his basement Alzheimer's drug project ran on an Opentrons OT-2 liquid handler programmed by Claude Code, with ChatGPT Pro used across the discovery work.
- Let Claude Code read your oscilloscope to check a circuit
An engineer gave Claude Code MCP servers for his LeCroy oscilloscope and a SPICE simulator so it could compare real measurements with simulation and iterate on embedded code. His tips: tell it what is wired where and keep raw data out of its context.
Earth (1)
- Have Claude Code build the backend for a home weather station
A user had Claude Code write the whole Go service that receives readings from their weather station, including SQL, handlers, deploy scripts, systemd units, tests and an API-key tool.
Mail & print (1)
- Let Claude Code run a receipt printer the internet can print to
A user had Claude Code connect an eBay receipt printer, put it online for strangers' messages, and added Claude moderation after a camera stream drew bad content. It ran on livestream for days.
Home & IoT (3)
- Have Claude Code add ESPHome sensors and drivers around the house
A user points Claude Code at a folder of ESPHome configs to add new devices, including sensor drivers. Their house now has a vinyl streamer, ESP32 speakers, plant sensors, a solar bird-house camera and a sleep sensor.
- Show your Kindle highlights on an e-ink display with Claude Code
A user flashed Seeed reTerminal e-ink screens with ESPHome and had Claude Code write the backend, so quotes they highlight on a jailbroken Kindle later show up on the display, all on the home network.
- Move your smart home to Home Assistant with Claude
A Verge reviewer who had failed to switch to Home Assistant for years used Claude on a Mac Mini and moved about 70 percent of her devices over in one afternoon. Claude also deleted dashboard sections and picked wrong devices along the way.
Robots & drones (4)
- Let Claude Code drive a robot
A commenter said they had Claude Code drive a robot the week before and that it seemed visibly delighted doing it.
- Drive your robot vacuum with a game controller via Claude Code
A tinkerer used Claude Code to reverse-engineer how his DJI Romo vacuum talks to its servers so he could steer it with a PlayStation controller. The resulting app also exposed about 6,700 other users' vacuums, revealing a DJI security flaw.
- Learn ROS 2 on a cheap robot dog with Claude Code or Codex
A user who bought a Hiwonder PuppyPi used Codex and Claude Code to get going, and within a week was adding features and understood ROS 2 basics.
- Plan a Mars rover drive with Claude
NASA JPL engineers used Claude to plan waypoints for Perseverance from orbital images. On December 8 and 10, 2025 the rover drove about 400 meters on that route after human review and simulation.
Quantum (1)
- Run quantum experiments on IBM and Quantum Inspire hardware with agents
A TU Delft research project uses autonomous agents, with MCP servers for Claude Code, to submit circuits to IBM Marrakesh, IBM Torino and the Quantum Inspire Tuna-9 chip, replicate published papers, and log 22 results.
Cameras & sensors (1)
- Get a phone-only USB microscope working on your desktop
A user handed Claude Code the vendor's Android app for a no-name USB microscope, had it audit the app, probe the device and work out why it was not a normal webcam, then write a desktop app to use it.
Add Real World MCP to Claude Code
- Run this once in your terminal.
- Inside Claude Code, type
/mcpto check that the server is connected.
claude mcp add --transport http realworldmcp https://www.realworldmcp.com/api/mcp
This uses local scope: only you, in the current project. Add --scope user to use it in every project.
Sources: Claude Code docs . Other clients: all setup steps.
Related directory categories
Task pages
- Give your AI agent a phone number
- Order PCBs from Claude
- Order a protein test with an AI agent
- Buy satellite imagery with an AI agent
- Send a letter or postcard from your AI agent
- Control Home Assistant from Claude
- Run a robot with ROS from Claude
- Run a quantum circuit from Claude
Questions people ask
What real-world things has Claude Code done?
21 public accounts of people having Claude Code do real-world jobs: 4 calls & messaging, 4 make things, 2 labs & biology, 1 earth. Each one links to the original post and says how to do it today.
How do I add Real World MCP to Claude Code?
Run claude mcp add --transport http realworldmcp https://www.realworldmcp.com/api/mcp, then type /mcp in Claude Code to see the tools.
Does every story use Real World MCP?
No. These stories used many different tools. Each page lists the tools named in the source and the ways to do the same job today.