Service shop invoice drafts from job notes
A tech marks a job done with a plain note and the agent turns it into invoice line items from the shop's own price book. Lines that do not match stay at zero until a person prices them, invoices over a threshold wait for approval, and reminders go out on a fixed schedule without skipping ahead.
What it does
- Turns a job note into line items using only the shop price book
- Leaves unmatched lines at zero for a person to price
- Flags invoices over the shop threshold for approval before send
- Sends reminders on day 3, 7 and 14, skipping paid, void and disputed invoices
- Marks invoices paid from payment webhooks and ignores duplicate events
Your approval boundaries
Approval requiredThese actions always wait for your yes:
- Approving any invoice over the threshold or with an unpriced line
- Sending the first invoice to a customer
- Voiding an invoice, only possible before send
You decide what happens next.
More about this workflow
This setup is for operators and managers who keep the busywork moving. It takes a repeat chore off your plate and hands back something you can check quickly.
First, it turns a job note into line items using only the shop price book. Next, it leaves unmatched lines at zero for a person to price. Then it flags invoices over the shop threshold for approval before send. After that, it sends reminders on day 3, 7 and 14, skipping paid, void and disputed invoices. Finally, it marks invoices paid from payment webhooks and ignores duplicate events. It works with your payments and database, each on its own login with limited access.
You get the prep work done and waiting for you. The agent stops and asks for your yes before approving any invoice over the threshold or with an unpriced line, sending the first invoice to a customer and voiding an invoice, only possible before send, and says plainly if a step cannot be undone.
“The AI never invents a price.”
Explore required tools and model recommendations
Tools and access
Stripe
Handles the payments part of this job. Grant a restricted read-only key.
API required: Yes. Needs an API key. Stripe offers restricted keys that limit what a key can do.
Supabase
Handles the database part of this job. Grant a role limited to one table.
API required: Yes. Needs a Supabase project and an API key. Give the agent a role limited to one table.
Official links only. Not sponsored, no affiliate links.
Model recommendations
Best pick
GPT-6.1 Sol
Cheap cached input suits jobs that rerun the same instructions each week.
$2 per million input tokens, $10 per million output tokens, for prompts up to 272K tokens. Longer prompts cost $4 in and $15 out.
OpenAI docs as of October 11, 2026
Cheaper backup
Gemini 3.5 Flash-Lite
Low cost for simple data pulls and matching.
$0.30 per million input tokens, $2.50 per million output tokens.
Google docs as of October 11, 2026
Our own picks. Not sponsored, no affiliate links.
Build your prompt
Add your details, then copy the prompt into your tool.
2Your prompt
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Run your workflow
Connect your tools with only the access this setup needs, then follow these steps.
Steps
Do these in order. Test on old data before it touches live work.
- 1Connect Stripe with its own login, not yours. Grant a restricted read-only key.
- 2Connect Supabase with its own login, not yours. Grant a role limited to one table.
- 3Paste the prompt where your harness takes instructions. See the note under the Copy button.
- 4Do a dry run on old or test data first. Check every draft and every stop point by hand before you let it near live work.
- 5Read its log after the first real run. Only widen access once a week of runs looks clean.
Safeguards and trust score
The score describes this example setup’s access, approval boundaries, ability to undo changes, and scope.
Can draft things that send or spend, so it sits close to risky actions.
Waits for a yes on: approving any invoice over the threshold or with an unpriced line, sending the first invoice to a customer, voiding an invoice, only possible before send.
Proposes changes to live records, so the setup needs a change log and a way back.
Runs on its own login across 2 tools. Fewer connections means a smaller blast radius.
How to raise it
- Access: Take away its ability to send, post or spend. Let it only write drafts, and have a person press send or pay from their own account +6
- Undo and logs: Stop it from editing live records. Have it write the change as a proposal you apply, and keep a log of every change with a way to roll it back +3
- Scope: Run it on one tool only, with its own login that can see just what this job needs +2
Do all of these to reach 91, up from 80.
Want help getting there? Get an AI Trust Audit from Pixeldesigns
Reviewed by Trustcase (example setup). How scoring works
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[](https://trustcase.dev/use-cases/service-shop-invoice-drafts-from-job-notes)<a href="https://trustcase.dev/use-cases/service-shop-invoice-drafts-from-job-notes"><img src="https://trustcase.dev/badge/service-shop-invoice-drafts-from-job-notes.svg" alt="Trustcase trust score for Service shop invoice drafts from job notes" height="20"></a>More operations workflows
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