We delivered an AI Coordination Protocol for a thirty-person Summerville roofing company — one that nobody opens, logs into, or talks to, because it is not an assistant but a set of rules about roles, decision rights and handoffs that works through the personal AI each of his thirty employees already had, in whatever language they already use it in, and its only visible effect is that houses stop sitting open under tarp.

He hung gutters out of one truck in 2013 and took his first roof the following spring. There are thirty of them now, working out of a yard in Summerville, four crews and a shop and an office of six, and they tear off and reroof houses from Goose Creek to Johns Island. The roofing was never the problem. His crews are good and he knows it.

What he finally sat down and measured last spring was the waiting. He took eleven completed jobs and counted, for each one, the days a crew was physically on the roof against the days the job simply sat. The average job ran thirty-four days from contract to final invoice and contained four days of crew time. One house on James Island stood open under tarp for six days waiting on a decking change order — rotten sheathing nobody had priced — that the homeowner approved in four minutes the moment somebody finally called her.

It rained twice that week. Nobody was lazy. Nobody dropped anything. Every one of those six days, that house was somebody else's turn and nobody knew whose.

That is not a staffing problem and you cannot hire your way out of it. The AI Coordination Protocol is not software he opens. He has never opened it. His production coordinator has never opened it, and she is the person it helps most.

It is a protocol — a written, enforced structure underneath thirty people who were already using AI, that makes their separate tools agree about the same job. Because they were already using it. That is the part he did not expect to matter as much as it did. His estimator had been running his own ChatGPT for two years.

Two crew leads use Gemini on their phones in the truck and use it in Spanish, which is how they think and how they talk to their crews, and the protocol does not care in the slightest. His office manager uses Claude for everything she touches. He did not buy thirty seats of anything and he did not make one person switch. What it defines is small and boring and it is the whole thing.

Who owns which decision — not who is responsible in general, but who specifically can say yes to a decking change, a crew date, a material release, a supplement going to the adjuster. What a handoff has to contain before it counts as handed off. How long a decision may sit before it gets loud. Who it gets loud at, which is the owner of the decision rather than a manager, because escalating to a manager is how the sitting started.

So nobody talks to it. The estimator's assistant tells him, in his own morning summary in his own tool, that the Goose Creek supplement needs a number today and that he is the only one who can give it. A crew lead's assistant tells him in Spanish that tomorrow's tear-off is released and the dumpster is confirmed. And on the morning a decking approval has been out two days with a house open, the owner's assistant tells him it is his to chase, with the homeowner's name and the one question that needs asking.

It also knows what has to be true before anything moves. A crew is not dispatched until the material is confirmed on site and the permit is on the job, and it reads the supplier's delivery confirmation rather than asking anyone. A final inspection is scheduled the day the last nail goes in, not the day somebody remembers. Half the old delay was work starting before it was allowed to and stopping halfway.

Four months in, the average job is down from thirty-four days to eighteen, with the same four days of crew time inside it. They completed fourteen roofs in August against a previous best of ten, with nobody added and overtime down about a fifth. No house has sat open more than a day since April. The first hour of his morning used to be him in the yard finding out what was stuck.

"It doesn't put on a single shingle," he said. "It just stopped everybody waiting on everybody. I didn't know that was a thing you could buy."