AI Business Plays

All plays › Local trades and home services

Local trades and home servicesGrok Bot

Give your techs a diagnostic bot that runs the scan tool and hands them a plan

Picked and checked by Olga Pearson, host of The Practical AI Show · Published

Result

self-reported

The shop’s Diag bot pulls a full vehicle scan in about 15 to 30 seconds, and the owner says Grok Bot took at least 7 hours a week off his plate in his first two weeks.

Brandon Miller co-owns Miller Auto, a family tow and repair shop in Omro, WI, with his son Austin. They run more than a dozen Grok Bots, each with one job. The Diag bot drives the scan tablet itself. It pulls codes and live data, digs through repair info and gives the techs a diagnostic plan to follow. It isn’t allowed to clear codes or reprogram anything. Another bot keeps a shop wiki of policies, procedures and what each bot does.

Who did it

Brandon Miller (@milleratr)Miller Auto, Omro, WI (sales, service and towing)Brandon Miller on X · Oct 19, 2026

Try it now

  1. Start with one bot and one job: when a tech asks, it pulls codes and live data and writes up what it found.
  2. Write its hard limits down first: it never clears codes, reprograms modules or orders parts. Those calls stay with the tech.
  3. Have it turn each scan into a short diagnostic plan: what to check first, what readings would confirm it, and which parts not to throw at it yet.
  4. Ask a second bot to keep a shop wiki of every policy, procedure and bot job, so what the bots learn isn’t lost.
Copy-paste prompt
You are the diagnostic assistant for [shop name]. When a tech gives you a vehicle (year, make, model, VIN) and a complaint, pull the codes and live data from [scan tool], look up [repair info source], and write a one-page plan: the likely causes in order, what to test first and the reading that would confirm each one, and what NOT to replace yet. You may read data only. Never clear codes, reprogram, or order parts. The tech makes every repair decision.

Make it run every week

A play works once. Turn it into a routine in three small steps:

  1. Run it once and check the result yourself.
  2. Give your AI a schedule. Tell it when to run this play (every week, or every month) and to message you with what it found before you act.
  3. Keep a log. One line per run: what was checked, anything flagged, what you did.

See how owners turn plays into systems →

What to watch out for

Self-reported. The 7-hours figure is from his separate Oct 18 reply (https://x.com/milleratr/status/2111960158112776261), and only two weeks in. Hooking a bot up to a scan tool depends on your hardware, so keep it read-only. Build it with Page: a services page with honest pricing that the bot can link in estimates.

Did it work?

PageMotor keeps this site free.

Related plays

  • Local trades and home servicesGrok Bot

    Have a Grok Bot negotiate your credit card processing fees

    self-reported

    About $5k a year saved on card processing for an auto repair shop that takes about $2M a year in cards. The markup over interchange went from 0.35% to 0.10%.

    Franklynn Automotive is an auto repair shop that runs about $2M a year through card payments. Processing is the bill you set up once and never look at again. Dan Mallatt gave his Grok Bot 24 months of statements. Interchange isn’t negotiable, but the processor’s markup is, so the bot found what the shop was paying on top of interchange and built the case for a lower rate based on the shop’s higher volume. It drafted every email and the counteroffer, and Dan reviewed each one before it went out. The markup dropped from 0.35% to 0.10% over interchange. His last step: get the final pricing in writing.

    By Dan Mallatt (@dan_mallatt), Franklynn Automotive (auto repair shop) · Source

  • Local trades and home servicesGrok Bot

    Have a Grok Bot build the moving inventory from customer photos

    self-reported

    A customer booked a whole move through the company’s Grok Bot, from quote to confirmed date, without a single phone call. The bot builds the full inventory list from photos or a video, and a person checks every line.

    Next Gen Movers is a long-distance moving company, and they say most moving quotes go wrong before moving day because nobody really knows what’s being moved. Now customers send photos or a quick video, and their Grok Bot goes room by room and builds the full inventory list. A real person on the team checks every line and asks about anything unclear. They also ask for photos of closets, stairs and where the truck will park, because that’s where the extra hours come from. One customer booked the whole move through the bot, quote to confirmed date, with no phone call.

    By Next Gen Movers (@nextgenmove), Next Gen Movers (long-distance moving company) · Source

  • Local trades and home servicesGrok Bot

    Have a Grok Bot build your landscaping website instead of paying a $2,500 quote

    self-reported

    His Grok Bot built a website for his landscaping business, found the cheapest domain and set everything up from the info and pictures he gave it. He had been quoted up to $2,500 for the same job.

    Max runs a landscaping business and needed a website. He had quotes as high as $2,500. Instead he gave his Grok Bot some details about the business and photos of his work. The bot built the site, compared domain prices, picked the cheapest one and set it all up. He says the result is exactly what he wanted.

    By Max (@max_peloquin1), Landscaping business · Source