The AI agent for cost estimators

Sauna reads drawings, BOMs, and labor rates, drafts should-cost models and quote breakdowns, flags margin risk, and assembles the customer quote — sourced from your cost data and held for your approval.

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What it does

What Sauna does for cost estimators

01
Build the should-cost
Pulls material, labor, and machine rates from Google Sheets and drafts a should-cost breakdown for each line of the BOM, with the assumptions shown.
02
Roll up the quote
Assembles part costs, tooling, and margin into a customer quote in Google Docs, ready for your review before it goes to sales.
03
Flag margin risk
Compares the quoted price against current material costs in QuickBooks and drafts a flag where margin has eroded since the last estimate.
04
Compare to actuals
Drafts a quote-vs-actual report once jobs close, showing where estimates missed so the next bid is tighter.

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In context

Ask in chat. It does the work.

Sauna shows up where you already work — the web app, Slack, email, iMessage, and Superhuman. It reads what it needs, does the task, and comes back with the draft for your approval.

app.sauna.ai/sauna

You

@Sauna Build a should-cost for this machined bracket from the drawing and BOM, using our current rates, and tell me the margin at the customer's target price.

Sauna

Reading Google Sheets and Google Docs.

Done — here's the draft and what I found. Approve to send.

Try it

Ask in plain words

The literal prompt for this job. Open it in Sauna and it picks up from there.

“Build a should-cost for this machined bracket from the drawing and BOM, using our current rates, and tell me the margin at the customer's target price.”

Example promptRun in Sauna →

Plugs into the tools you already run — and thousands more, or any MCP server.

Google Sheets Google Docs QuickBooks Google Drive

Good to know

Questions, answered.

Will it send the quote to the customer?

No. It drafts the should-cost and the customer quote with margin shown, but it sends nothing. Sales reviews and you approve before it leaves the building.

Are the rates current?

It uses the rates and material costs in your connected sheets and QuickBooks, and cites them, so you can confirm they're up to date before the bid goes out.