Field notes
Notes from real service businesses, not a ChatGPT window.
How work actually moves, and slips, in HVAC, auto repair and other service businesses, and how we build agents into the software you already run.
Field notes
How work actually moves, and slips, in HVAC, auto repair and other service businesses, and how we build agents into the software you already run.
Cortex builds custom AI systems for established service businesses. These pages are the long form of that work: field notes, not a blog about ChatGPT. We write from an install we can stand behind, Detail Driven Enterprises in Jackson Hole, Wyoming, across mechanical repair, collision, detailing, and glass, and from the stalls we hear every week on audit calls. Repair lives in Tekmetric. Collision lives in CCC ONE. Conversations live in GoHighLevel. Money lives in QuickBooks and Stripe. Demand lives in Google Ads, Meta, Google Business Profile, GA4, and Search Console. A person was still the integration. We installed collectors, a local EMS bridge, an operator dashboard, and agents with jobs: follow-up, monitoring, reporting.
The Bureau of Labor Statistics counted about 825,800 automotive service technicians and mechanics in the United States in 2025. The Auto Care Association put U.S. light-duty aftermarket sales at $413.7 billion in 2024, with a fleet averaging more than twelve years on the road. CCC Intelligent Solutions documents EMS exports from CCC ONE. NIST published an AI Risk Management Framework in 2023. We name those sources because they are real. We do not link out. We do not invent ROI. Hours saved and dollars recovered go on a page when they are measured and the operator will stand behind them.
If you run an auto shop, start with the automotive audit and the Detail Driven case study. If you run HVAC, plumbing, electrical, roofing, pest, or another trade, start with the audit for your industry , HVAC, plumbing, electrical, and the rest. The coordination problem is the same even though we have not published a case study in those verticals.
Automotive
Repair, collision, detailing, glass, tires. What we installed at Detail Driven in Jackson Hole, and the leftover work we see in independent shops.
Jackson Hole. Repair, collision, detailing, glass. Local hardware, an operator OS, a CCC EMS bridge, and the software the shops already ran.
McGuire · August 2026 · 8 min read
Open ROs, declined work, the morning report, ads vs cars booked. Not a chatbot on the website.
McGuire · August 2026 · 6 min read
The recommendation was logged. The follow-up was not. That revenue leaves with the car, and the ticket already knew.
McGuire · September 2026 · 6 min read
CCC exports EMS estimates and Final Bills to a folder. The schedule is not a clean feed. We read what CCC already writes. We do not scrape DATA.DAT.
McGuire · September 2026 · 6 min read
Operations
Agents versus automations, CRM follow-up, missed calls, and the owner report that still gets rebuilt by hand.
Zapier moves a field. An agent watches a queue. Mixing them up is how operators buy the wrong thing.
McGuire · August 2026 · 6 min read
Five logins is not visibility. The owner report is still rebuilt by hand. Agents assemble exceptions overnight so Monday starts from what broke.
McGuire · September 2026 · 6 min read
The phone system knows who called. The advisor is on the drive. After-hours and lunch missed calls are leftover work, not a new phone vendor.
McGuire · September 2026 · 6 min read
James, $1,800, four days silent. Elena, brakes, no follow-up. The CRM is watching. Nobody is assigned.
McGuire · September 2026 · 6 min read
Spend up, leads down, “brake repair near me” sliding from four to seven. None of that matters until it is next to the cars that checked in.
McGuire · September 2026 · 6 min read
Infrastructure
Local hardware, cloud models, hybrid routing, and how two systems of record are supposed to talk.
Some jobs should never leave the building. Some need a frontier model. Most service businesses need both, routed on purpose.
McGuire · August 2026 · 6 min read
A lead in GHL is not a repair order in Tekmetric. Connecting them is a mapping job, not a new CRM, and not a master login.
McGuire · September 2026 · 6 min read
Audit
How the free AI operations audit actually works, what you leave with, and what we will not quote from a form.
Trades
The same coordination problem in HVAC and other field trades, named as a pattern, not as a fake case study.
Every note has a stall, a system of record, a job an agent can watch, and a line we will not cross. We name software as examples, then confirm access in the audit. We name public sources without turning the page into a bibliography of outbound links. We do not attribute Detail Driven’s facts to a shop we have not seen. We do not hide the dashboard as a later offer; it ships in the same build. We do not sell a pack of agents. If a vendor will not let us in, we say so before anyone pays.
Use the notes as a map of the work, not as a DIY install guide. The architecture at Detail Driven , private Linux hardware, a CCC EMS folder bridge, hybrid inference, least privilege, is a shape, not a kit. Your first deployment is usually one or two paths. The rest is a conversation about whether the work actually justifies a build.
FAQ
Short answers. The long versions live in the notes above.
Start with a Free AI Operations Audit. We'll show you what is worth automating, what isn't, and what a practical first deployment could look like.