Owner-led companies, anywhere
# I build the AI that can run your office, so you can run the company.
Your company runs on calls, quotes, and follow-up. The systems live inside the tools you already use, built to cost little to run.
[Request a Blueprint](https://contractoros.tech/apply)
A one-page plan for your company, your Blueprint: what to automate first, and in what order. Free, and yours to keep whether or not I build. Your AI assistant can send the request for you. [See a sample](https://contractoros.tech/#samples) first if you would rather.
Your company
Front desk Intake agent
Operations Operations agent
Accounts Collections agent
Owner Morning brief
Records Document agent
Agent installed Not to scale
| Project | Your company |
| View | Your company as a floor plan, one agent per room |
| Scope | Operations system, built into your tools |
| Drawn by | [Sebastian Pirchi](https://contractoros.tech/team), Custom AI Systems |
| Status | Preliminary. Final after your walkthrough. |
| Sheet | 01 of 12 |
02 The rules
## Eight rules, in writing, before any work starts
Every system I install ships with these rules written down. They are the difference between an automation and a system you can hold to account, and they are the first page of every Blueprint.
General notes Apply to every sheet
- It asks before it sends, spends or deletes, until you approve a task to run alone. You decide, task by task.
- Every action is logged in plain English: what it did, when, and why.
- It runs inside your accounts. Your data, your customer list and your records stay yours.
- When it is unsure, a person decides, with a draft already written.
- Client information goes only to tools you have approved.
- Every part has an off switch. Turn one off and that work returns to your team.
- Nothing runs alone until it passes inspection on your real work.
- Before it goes live, every build passes a launch checklist: it says it is automated wherever the law asks, texts go only to people who agreed to them, every marketing email carries an opt-out, and every form carries a privacy notice.
Agent card Sample: the intake agent from the cover plan
Purpose
Drafts a reply to every new inquiry within the hour and offers times for a walkthrough.
Tools it may use
Your inbox, to read and to draft. Your calendar, to propose times.
Data it may read
The inquiry, your service list, your open slots. Nothing else.
Alone
Drafts only, until you approve replies to go out on their own.
Never
Moves money, deletes a record, or texts anyone who has not agreed to texts.
Off switch
One toggle. New inquiries go back to your front desk the same minute.
Every agent you get ships with a card like this, written before it runs and kept with the Blueprint.
03 Program
## Start with the result you want most
Every build starts from one, because the order matters more than the list. Nearly every owner wants all four by the end, and the Blueprint sets the order.
Revenue
“More business from the leads we already get.”
What I install: An intake agent that drafts a reply to every text, email and web form, asks your questions and offers the next step. A follow-up agent that works every open quote until you hear yes or no.
What you see: Every lead in one list: where it stands, and who owes the next reply.
Time
“My people out of the inbox.”
What I install: An operations agent that reads the email, turns requests into tasks, updates your records and drafts the replies for a person to approve.
What you see: One page each morning: what came in, what moved, what needs your yes.
Risk
“Nothing falls through the cracks.”
What I install: Agents that watch invoices, deadlines and paperwork, and start the follow-up before a date passes. Every action logged.
What you see: A short list of exceptions: the items that need a person.
Standing
“A company that runs when I'm not there.”
What I install: The whole system tied together, with your rules written in: who approves what, what goes out alone, what waits for you.
What you see: Answers at nine at night by the same rules your best person uses at nine in the morning.
04 What I build
## What I build
Twelve pieces in four groups. Each one can be built alone. Together they make one system.
### The full system, installed in your office
The whole set as one system: a private AI server in your office, your workflows running on it, the general notes around it, and care every month. Build it all at once or one piece at a time; your Blueprint sets the order.
### Private AI
Runs on a computer in your office. Client data stays in the building.
#### Private AI server
A small machine in your office runs an AI model locally. Your staff ask it about your own files, and client data stays in the building.
#### Company brain
Answers from your procedures, agreements, past jobs and policies, so a new hire asks the system before they ask you.
### Workflows
Agents that do the office work, inside the tools you already use.
#### Paperwork agent
Reads and checks invoices, insurance certificates, W-9s, leases and applications, then enters them into your books or CRM.
#### Portal agent
Works the websites and old software nothing connects to: carrier portals, supplier portals, permit sites. It downloads, enters and checks, and asks before anything goes out.
#### Revival agent
Works old leads and past customers with follow-ups drafted for your approval, starting from a list you already own.
#### Deadline watch
Watches licenses, insurance certificates, renewals and filing dates, and flags each one early.
### Custom code
Software written for your company, running on your own accounts.
#### Connecting code
Joins the tools that don't talk to each other: QuickBooks, your CRM, the job board, the bank, email.
#### Spreadsheet to app
The spreadsheet that runs your company becomes a small app, with one place for each fact and a record of every change.
#### Owner's dashboard
One screen with the numbers that matter, pulled live from your own systems.
### Safety and people
The rules, the training and the upkeep.
#### AI safety review
Finds where staff paste client data into public AI tools, then sets the rules and a safe setup.
#### Team training
Your staff learn the system and safe AI habits, on your own work.
#### Care
Monitoring, updates and fixes every month, so the system keeps pace with the company.
The same twelve on one sheet you can print or send: [the service menu](https://contractoros.tech/menu).
05 Sample plans
## What a Blueprint looks like
A Blueprint is one page, drawn for one company. These samples show its shape for four kinds of business. Yours names your people, your tools and your numbers.
Sample Blueprint · Construction & trades Illustration only
### Goal
“More won jobs from the leads we already pay for.”
### Existing conditions
- Leads hear back the next day, after they have called someone else.
- Estimates take a week to leave the office.
- Sent quotes go quiet, and nobody follows up.
- Change orders and invoices get chased on weekends.
### New work
Intake agent: Drafts a reply to every text, form and lead-site message, day or night, asks your qualifying questions, and offers times for the walkthrough.
Estimate assistant: Turns walkthrough notes and photos into a draft estimate in your format, ready for your review.
Follow-up agent: Sees when the quote link is opened and follows up until you hear yes or no.
Collections agent: Sends progress invoices and reminders on schedule, after your approval.
### Inspection
Drafts every reply for your approval on live leads. It sends on its own only where you approve it.
Timeline and investment: set in your Blueprint, in writing, before any work starts.
Sample Blueprint · Property management Illustration only
### Goal
“Get my managers out of the inbox and back on the properties.”
### Existing conditions
- Tenant, owner and board emails arrive all day, and each one reads urgent.
- Vendors get scheduled by phone tag.
- Bids, insurance certificates and invoices get chased by hand.
- Board reports come together late at night.
### New work
Front desk agent: Reads every tenant, owner and board message, answers the routine ones from your policies, and routes the rest to the right manager with a draft reply.
Work order agent: Turns a request into a work order, books the vendor, and follows up until the job is closed with photos.
Paperwork agent: Lines up bids side by side, chases missing certificates and invoices, and files everything where it belongs.
Board report agent: Drafts the monthly report from what already happened.
### Inspection
Works live requests beside your managers, drafting only, until you approve it to answer on its own.
Timeline and investment: set in your Blueprint, in writing, before any work starts.
Sample Blueprint · Insurance, tax and accounting offices Illustration only
### Goal
“Faster answers for clients, and no more chasing documents.”
### Existing conditions
- Clients call to ask where things stand.
- The same document gets requested three times.
- Renewals and filing dates live in someone's head or a spreadsheet.
- New inquiries wait until someone has a free minute.
### New work
Client desk agent: Answers status questions from your own records, day or night, and hands anything sensitive to a person.
Document agent: Requests, collects, checks and files client documents, and follows up until the file is complete.
Deadline agent: Watches renewals, filing dates and expirations, and starts the outreach early.
Intake agent: Qualifies new inquiries and books the consultation.
### Inspection
Works a set of real files beside your staff, drafting only, before it speaks to a client alone.
Timeline and investment: set in your Blueprint, in writing, before any work starts.
Sample Blueprint · Suppliers and distributors Illustration only
### Goal
“Quotes out the same day, and fewer calls asking where an order is.”
### Existing conditions
- Quote requests arrive by phone, text and email, and wait.
- Customers call to ask where their order is.
- Special orders get tracked on paper.
- Receivables get chased by hand at month end.
### New work
Quote desk agent: Reads every request, checks stock and your pricing rules, and drafts the quote for a person to approve.
Order status agent: Answers “where's my order” from your own system, any hour.
Special order agent: Follows each special order from the vendor to pickup, and tells the customer when it lands.
Receivables agent: Sends reminders on schedule and routes disputes to a person.
### Inspection
Drafts quotes beside your counter staff until its numbers match theirs. Then it takes the routine ones.
Timeline and investment: set in your Blueprint, in writing, before any work starts.
06 Site
## Custom, built on your lot
Off-the-shelf apps are the same house built a hundred times: good houses, one floor plan for everyone, and your company learns to live the way the plan says. I build custom. On your lot, around the way your company already works, with your tools, your rules and your people.
### A fit if
- You run a company of 5 to 100 people.
- The work runs on calls, email, quotes, schedules and follow-up.
- You want the decisions to stop waiting on you.
- You want your best people on the work only they can do.
### Not a fit if
- An app off the shelf already does the job. Use the app.
- You want a single automation from a template.
- You want a widget on your website and nothing more.
- You want it built without a conversation.
07 Sequence of work
## Built in the right order
Drawings before work. Inspection before handoff. Care after. That order keeps every build on plan and keeps you in control of every step.
- 01
### Walkthrough
We walk through your company together, in person in Los Angeles or by video call from anywhere: the inbox, the phones, the handoffs, the spreadsheets. I ask a lot of questions.
You get: A clear read on where the hours go.
- 02
### Blueprint
One page: what you want, where the hours go, what I would install, how it gets inspected, the timeline and the investment.
You get: The plan. Free, and yours to keep.
- 03
### Build
I install the agents inside your tools and write down the rules: what each one may do alone, and what waits for a person.
You get: A working system on your own accounts.
- 04
### Inspection
The system works beside your team on real work, drafting only. It acts alone only where it has proved itself and you approve it.
You get: Proof on your own work before anything runs alone.
- 05
### Care
I watch it, tune it and fix it, month after month. When your business changes, the system changes with it.
You get: A system that keeps working after the build.
08 Measured
## You will know what each result costs you
Before you commit to anything, you can read what one result costs on your own numbers. I install that reading and you keep it, whether or not we build anything together.
Most companies cannot say what one result costs them. The bill arrives as a single number at the end of the month, and nothing on it says which work it paid for.
Every proposal you have read this year named a saving. None of them showed the arithmetic behind it, so you had no way to check the claim. This sheet is the arithmetic, and [the cost page](https://contractoros.tech/cost) lays out the method with its dates.
Measured on my own systems September 8 to October 9, 2026
In one long session
Hundreds of millions of tokens served from memory instead of processed again from the start. Eighty-six sessions in the month served more than a hundred million each.
The longest sessions
Five passed a billion tokens served from memory. The longest passed three billion.
Across the month
Ninety-seven of every hundred tokens the models read came from memory, more than thirty-five billion in all.
A token is a small piece of a word, and every token a model reads is counted. Memory holds only when what repeats arrives the same way every time. That is how my systems are built, and how I build yours. Read with the systems' own meter on one machine, each response counted once.
First client engagements are open now. No client quote, logo or result appears on this page until a client agrees to it in writing, with a name, a company and the result in their own words.
#### How the cost is measured, and how every rule is scored
## How the reading gets built
Four steps, and the last one is the reading itself.
| Step | What happens | What you end up holding |
| One | Every call your company makes to a model is written down: which model answered, how many tokens it read, which task it served, and what it cost. | The first honest picture of where the money goes. |
| Two | Each task is matched to the smallest model that still meets your quality floor. | The list of calls paying a premium for easy work. |
| Three | What repeats is served from memory instead of processed again from the start. | The mechanism, which is the part that lasts. |
| Four | The same log runs again, on the same tasks, over the same window. | Cost per result, before and after, on your own numbers. |
## Measured before it is promised
I score every system before it touches your work. Who holds the keys, what gets logged, what it may do alone, and what happens when it is unsure. Each rule scores 0 to 3. A 1 is a rule in words, a 2 is a check that catches a slip, and a 3 means the slip is impossible by construction. Only 3s count as finished.
| The question | A template automation | A governed build |
| What gets logged | Whatever the tool decides | Every action, in plain English, in a log the system cannot edit. |
| When it is unsure | It sends anyway | A person decides, with the draft already written. |
| Anything irreversible | One prompt away | Waits for your yes. The gate sits outside the system. |
| The off switch | A support ticket | One switch per part, in your hand. |
| Who answers for it | A help desk | The engineer who built it. |
Rule two of the eight already writes this record, which is why the reading needs no new machinery. The meter only reads what your build already logs.
My own systems, scored the same way
The cost half is measured and stands above, with its instrument and its dates. The rules half is scored on your build before it goes live, and you read the score before you approve anything.
Four ways owners take this on, and when each is the right call
### Hire another admin
Right when every item needs a person's judgment and the volume holds steady. A person learns your company, and the hours grow with the work.
### Add another app
Right when one app already does the whole job as it comes out of the box. Use it, and skip the build.
### Do it yourself with a chat tool
Right for drafting and research one task at a time, by someone who reads every answer before it leaves the building.
### A governed build
Right when the work crosses your inbox, your books and your calendar, repeats every day, and has to answer to written rules. Built, inspected, and the off switch in your hand.
## What you are covered on, in writing, before anything starts
Four things, written down here so you can hold me to them. None of them depends on a refund, and none of them promises a result before your work has been measured.
The cover Written into the agreement
See it work first
One real workflow from your Blueprint, automated and demonstrated on your own work, as the first stage of the build. If it does not hold up against your real jobs, the build stops there and the Blueprint stays yours.
Done means checked
A task counts as finished only when a separate check re-reads the proof. Your system does not mark its own work complete, and neither do I.
The off switch is yours
Every part has one, in your hand. Turn any part off and that work goes back to your team the same day.
You own all of it
The code, the documentation, the data and the credentials are yours, and they are handed over in full. Nothing of yours is held back, and leaving carries no penalty.
No refund promise and no timeline promise, because neither is mine to make before your work has been scoped. What is on this card is what I can be held to.
[Request a Blueprint](https://contractoros.tech/apply) [Score your own setup with the owner's checklist](https://contractoros.tech/checklist)
Ten ways an automation fakes success, and how each one shows up in a score: [the field guide](https://contractoros.tech/field-guide).
How my own systems hold to the same rules, where your request goes, and the documents you can read first: [the trust page](https://contractoros.tech/trust).
09 Who builds it
## One engineer, start to finish
I am Sebastian Pirchi, an AI systems engineer in Los Angeles. I design every system, build it and stand behind it, from the first walkthrough to the monthly tune-up. [More about me](https://contractoros.tech/team).
I build for owner-led companies wherever they are, from a base in Los Angeles: trades, property managers, offices and suppliers. Different businesses, the same work underneath: calls, email, quotes, schedules and follow-up.
You always know exactly who touches your systems: the same engineer, every time. No account managers, no handoffs, no juniors.
10 Schedule
## What it takes
| Stage | What you get | Investment |
| Blueprint | One page, drawn for your company after a walkthrough. Yours to keep. | Free |
| Build | Stage one is one real workflow from your Blueprint, live on your own work; if it fails inspection, the build stops there. Then the rest of the system, installed in your tools and inspected on your real work. | A five-figure engagement, scoped in writing before work starts |
| Care | Monitoring, tuning and fixes, so the system keeps pace with the company. | Monthly |
In writing, every time: the Blueprint, the scope and agreement, the general notes, each agent's card, the launch checklist, and the inspection record.
Nothing runs alone until it passes inspection on your real work. If it does not pass, the build stops at that stage, and the Blueprint stays yours. The agreement sets the rest.
I take on a few builds at a time, so every one gets me.
What sets the size of a build, before you ask: [the five things that decide it](https://contractoros.tech/build-size).
11 Questions
## Questions owners ask
#### Do I need to learn any of this?
No. That is the point of having it built for you. You describe how the work actually runs, and it is built to match. You never need to know what any of it is called.
#### What can you build?
Twelve pieces in four groups: private AI (a private AI server and a company brain), workflows (paperwork, portal, revival and deadline agents), custom code (connecting code, spreadsheet to app and an owner's dashboard), and safety and people (an AI safety review, team training and monthly care). Each can be built alone; together they make one system.
#### Can the AI run on our own computer?
Yes. A private AI server runs a model on a machine in your office, so client data stays in the building. Your Blueprint says which work runs there and which uses outside services you approve.
#### Do we have to switch software?
Usually no. I build inside what you already use: email (Gmail or Outlook), text messages, calendar, your CRM and your books (QuickBooks and the like). If a tool can't do the job, the Blueprint says so before you spend anything.
#### Does it answer phone calls?
It works written messages: texts, web forms, email and lead-site messages. Calls stay with your team, and your Blueprint says whether a call line belongs in the plan.
#### How do I keep the cost of running AI down?
Three habits keep it low. Every call to a model is written down with what it cost. Each task runs on the smallest model that still meets your quality floor. What repeats is served from memory instead of processed again from the start. On my own systems, read from September 8 to October 9, 2026, one long working session served hundreds of millions of tokens that way. Before you commit to anything, you read what one result costs on your own numbers.
#### How is a build priced?
Builds are five-figure engagements. Your Blueprint names the exact investment, in writing, before any work starts. The Blueprint itself is free.
#### Can I skip the Blueprint and just hire you?
Yes. Send the application and say so in the last box. If your answers fit, you pick a call time on the spot and we start there. The Blueprint still gets drawn, because the build needs a scope, and it becomes the document we both work from.
#### How long does a build take?
Your Blueprint sets the timeline. Much of it is inspection, because the system works beside your team on real work before it works alone.
#### What if it makes a mistake?
It asks before anything important goes out, and it logs every action. During inspection it drafts only. When it is unsure, a person decides.
#### Whose data is it?
Yours. The system runs inside your accounts, and client information goes only to tools you approve.
#### Is it safe for my staff to use public AI tools with client information?
Not without rules. An AI safety review finds where staff already paste client data into public AI tools, then sets the rules and a safe setup, which can include a private AI server in your office so client data stays in the building. Team training puts the safe habits into the daily work.
#### Is it legal to let AI answer my customers?
Yes, with rules, and every build follows them. In California, an automated system that talks to customers to make a sale has to say it is automated. Marketing texts need the customer's consent, and marketing emails need an opt-out. Your Blueprint names the rules that apply to your business.
#### What kinds of companies do you work with?
Owner-led companies of 5 to 100 people: trades, property managers, offices and suppliers. They all run on the same things: calls, email, quotes, schedules and follow-up.
#### What does governed mean?
The rules are written down before the build. Every action is logged where you can read it. Anything irreversible waits for a person, and every part has an off switch you hold.
#### Why a custom build instead of an app?
Because your company does not run like anyone else's. I draw the plan first, prove it on your real work, and care for it after launch.
12 Request
## Request your Blueprint
Thirteen short answers, most of them one tap, about three minutes. They tell us both whether a build fits before anyone spends an hour on a call. If it fits, you pick a call time the moment you send.
This fits you if you are the owner or an officer, your company runs 5 to 100 people, and you already know a build is a five-figure engagement. I take on a few builds at a time, so every one gets me. Rather take it one step at a time? [Open the application page](https://contractoros.tech/apply).
Walkthrough call
### Pick a time for your call
Thirty minutes by phone, about how the work runs today. I call the number you give, at the time you pick. Times are Pacific. If the work needs a screen or a visit, we set that up on the call.
Loading the open times.
Best number for the call
Anything I should read first? Optional
Add to Google Calendar [Calendar file for Outlook or Apple](https://contractoros.tech/#book)
Not ready to pick? Keep this page's address. It opens these times again for 30 days.
### Thank you. A build does not fit yet.
I build for owner-led companies of 5 to 100 people with a five-figure build within reach this year, so there is no call to book today. I read every application myself, and yours is on file.
Three free reads help most at this stage: [the owner's checklist](https://contractoros.tech/checklist) to score any AI system anyone offers you, [the field guide](https://contractoros.tech/field-guide) to the ways automation fails quietly, and [the cost page](https://contractoros.tech/cost) on reading what one result costs. When your answers change, send the application again.
Project data
Practice: Custom AI Systems
Based in: Los Angeles, California
Builds for: Owner-led companies of 5 to 100 people
Engagement: Blueprint free · a build is a five-figure engagement · care monthly
Contact: info@contractoros.tech
Copyright: 2026 Custom AI Systems
On this page
- [01 Cover](https://contractoros.tech/#top)
- [02 The rules](https://contractoros.tech/#notes)
- [03 Program](https://contractoros.tech/#program)
- [04 What I build](https://contractoros.tech/#build)
- [05 Sample plans](https://contractoros.tech/#samples)
- [06 Site](https://contractoros.tech/#fit)
- [07 Sequence of work](https://contractoros.tech/#method)
- [08 Measured](https://contractoros.tech/#measured)
- [09 Who builds it](https://contractoros.tech/#builder)
- [10 Schedule](https://contractoros.tech/#terms)
- [11 Questions](https://contractoros.tech/#questions)
- [12 Request](https://contractoros.tech/#blueprint)
[Service menu](https://contractoros.tech/menu) · [48-hour scan](https://contractoros.tech/scan) · [Field guide](https://contractoros.tech/field-guide) · [Owner's checklist](https://contractoros.tech/checklist) · [Trust](https://contractoros.tech/trust) · [Property management](https://contractoros.tech/property-management) · [Trades](https://contractoros.tech/trades) · [What sets the size of a build](https://contractoros.tech/build-size) · [Cost per result](https://contractoros.tech/cost) · [When nobody owns the system](https://contractoros.tech/ownership-standard) · [History](https://contractoros.tech/history) · [Team](https://contractoros.tech/team) · [Why us](https://contractoros.tech/why-us) · [Code triage](https://contractoros.tech/tools/code-triage) · [Flagstone layout](https://contractoros.tech/tools/flagstone) · [Drawing set](https://contractoros.tech/tools/drawing-set) · Email · [For AI assistants](https://contractoros.tech/for-ai-assistants) · [llms.txt](https://contractoros.tech/llms.txt) · [Privacy](https://contractoros.tech/policies#privacy) · [Terms](https://contractoros.tech/policies#terms) · [Accessibility](https://contractoros.tech/policies#accessibility)

Source: https://contractoros.tech/