car-useLet your agent use your car.
Let your AI agent read codes, watch live sensors and diagnose your car through a $15 OBD-II adapter. Or a virtual one, when there's no car nearby.
car-use --sim p0420Codes. Signals. Readiness.
Trouble codes, the freeze frame the car saved, emissions monitors and live sensors, all in clean names with units.
Reason over live data.
Watch sensors over time and compare them. The agent explains what the numbers mean, not just what the code is called.
Bring your own agent.
Claude Code, Codex, OpenClaw, Hermes, anything with a shell. One prompt sets it up.
A check-engine light, diagnosed.
The agent reads the code, then confirms it against live data before naming a cause, the way a good mechanic does.
No car nearby? Use ours.
Built-in cars with real faults, each behaving the way the fault does on a real car. They're good for learning, for demos, and for testing your agent in CI.
p0420Dead catalytic converterThe rear O2 sensor mirrors the front one.p0171Running leanTrims high at idle and normal under load: a vacuum leak.p0300Random misfireUnsteady idle; cylinder codes pending on two cylinders.cleared-codesA seller cleared the codesNo codes, but monitors incomplete after 11 km.dying-batteryCharging faultVoltage falling with the engine running.Cranes, excavators, trucks. One agent.
Rental and construction fleets run a mix of brands, each with its own telematics portal. car-use reads them all into one place, so an agent can answer questions and do the paperwork.
Cranes
Engine hours, location, utilisation by site, overload and safety alarms, inspection due dates.
Excavators & loaders
Working vs idle hours, fuel burn, fault codes, service intervals by engine hour.
Generators & compressors
Runtime, fuel level, alarms, and rental hours that come from the machine, not a timesheet.
Trucks & trailers
Heavy-duty J1939 data, trips, drivers, fuel and toll records, permit and fitness expiries.
Sources: J1939 and OBD on the machine, GPS trackers, and makers' telematics feeds (ISO 15143-3). Read-only. car-use never operates lifting or moving equipment.
Give your car its own brain.
An always-on agent for every car, with its own LLM endpoint, a sandbox, maps and memory. The same harness and skill, reachable from anywhere.
A brain per car
An always-on agent that knows this car's history, quirks and schedule.
Sandbox
A virtual twin built from your car's own data. Try things there first.
Maps & places
Routes, chargers, fuel, parking and service centres, in the agent's context.
One API
An LLM API and a vehicle API for every car you connect, whatever the brand.
From anywhere
History, relay to the car, approvals on your phone. No laptop in the passenger seat.
Let your cars talk to each other.Coming
Every car's agent gets an address. Your cars, your family's and your fleet's can message each other and coordinate, over Agent Intercom, the open protocol for agents talking to agents.
- Fleets: machines hand jobs to whichever one is closest and free.
- Families: the car with more range takes the long trip.
- You: ask any of your cars a question from Claude Code or Codex.
Today it reads. Tomorrow it books the ride.
Every backend declares what it can observe and do. When a carmaker or robotaxi platform opens an API, it plugs in as a new backend. No redesign needed.
Observe
Signals, trouble codes, readiness, history.
Act
Climate, locks, charging, clearing codes.
Setpoints
Destination, charge limit, assist settings.
Missions
Drive to, summon, park.
Services
Book a ride, dispatch a vehicle.
A car has brakes. We act like it.
A phone harness can send the wrong message. A car harness must never do the wrong thing.
Read-only by default
Raw requests are limited to read services. Coding, actuation and flashing are refused, whatever the agent sends.
The owner decides
Anything that changes the car has to be enabled per vehicle by a person at a real terminal, then confirmed each time.
A verifiable audit trail
Every decision goes into a hash-chained log. car-use audit --verify detects edits.
Never
Emissions defeats, odometer changes, immobiliser or key work, or control of a moving car.