Buildr
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Build once, use everywhere.

One place for you and your agents to store data, verify changes, automate work, and create apps.

Works from any agent
Harbor Construction
Quote Q-1042
Steel framing$48,200
Site labor$31,500
Permits and inspections$16,700
Subtotal$96,400
DiscountProposed
Total
Margin
Margin stays above 25%
Checked on every change
Passing
Claude
Give Harbor 30% off so they sign this week.
Working in Buildr
Your margin rule blocked 30%, so I applied 20%. Margin is 26% and the quote is saved.

Works with what you already use

Connect anything

Plug into the systems your company already runs on and the tools you use yourself. Connect once, and every agent and app can use it without ever seeing the password.

ConnectionsAgents get a handle, never the key
Your company
SalesforceAccounts and dealsConnected
QuickBooksInvoices and price bookConnected
Slack#sales, #site-teamConnected
Google DriveContracts folderConnected
Anything with an APIYour ERP, your database, a tool built in houseAdd
Just you
Gmaildana@harborbuild.comConnected
Google CalendarSite visitsConnected
OutlookPersonal inboxConnect

Harbor’s quotes pull prices from QuickBooks and requests from Gmail, and post to Slack when one is signed.

01Store data

Your agent sets up where your data lives, then connects the tools that fill it.

Quotes
CustomerTotalStatus
Harbor Construction$77,120Draft
Pine & Oak Builders$42,900Signed
Westfield Renovations$18,350
Gmail connectedNew requests become quotes

Quotes, customers and a price book, filled from Gmail and your books.

02Verify changes

Write a rule once and every change, from every agent, is checked against it. Every change is remembered.

Changes to Q-1042
Discount 20%Claude, just now
Discount 30%Blocked by Margin stays above 25%
DAdded Site laborDana, yesterday

A 30% discount breaks the margin rule, so it never reaches the quote.

03Automate work

Work runs on its own, on a schedule or when something changes. A person approves when it matters.

Automations
Follow up on quiet quotesEvery weekday at 8:00
Find quotes sent 3 days ago
Draft a follow-up for each
DDana approvesApproved
Send 4 emailsSent

Each morning, quotes waiting three days get a follow-up, sent after Dana approves.

04Create apps

Put a small app on top for the people who would rather tap than type.

9:41
New quote
CustomerHarbor Construction
Discount10%15%20%30%
Margin26%
Send to Harbor

A quote builder the site team uses from their phones.

05Use everywhere

The same data, rules and apps from Claude, ChatGPT, Cursor, or a teammate who never opens an agent.

ClaudeChatGPTCodexCursorGeminiMuseBuildr

Sales asks Claude, finance asks ChatGPT, both see the same quote.

What it is, and isn't

Not an agent

It is the place your agents work: the tools, data and rules they share.

Not Zapier

It holds the data your automations change, and checks every change they make.

Not a database

It remembers every change, who made it, and refuses the ones that break a rule.

Get started

Free for one person. Team pricing to come.