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FieldInvoice AI

FieldInvoice AI

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Info

A hackathon build that turns contractors' messy field notes into verified invoices with Stripe payment links — spec'd properly: PRD, BDD, and ADRs across 19 modules.

Role
Hackathon
Hackathon build
2026
Stack
Next.js
Stripe
LLM extraction
Proof
Notes → verified invoice → payment link in one flow
Human verification gate before any invoice goes out
PRD, BDD scenarios, and ADRs documented across 19 modules
Field workers finish the job, then lose days turning messy notes into invoices.
01 — Notes to Invoice04 Films
Film — overview.mp4
01Field Notes Become an Invoice

Paste the mess a contractor actually writes and the LLM extracts the line items — descriptions, quantities, amounts — into a draft invoice, one take, no template shuffle.

Field notes become an invoice
Film — verification.mp4
02The Human Signs Off

Extracted line items land in a review step before anything goes out — the model does the tedious reading, the worker keeps the signature, because billing errors cost trust.

Line items verified before anything is sent
Film — edit_item.mp4
03Edit a Line, Totals Follow

Change a quantity or an amount and the totals recalculate on the spot — the review step is a working editor, not a confirmation dialog.

Edit a line, totals follow
Film — export.mp4
04Out the Door with a Payment Link

The finished invoice exports with a Stripe payment link attached — the gap between finished field work and getting paid closes in one flow.

The finished invoice, exported
02 — Business ValueWhat Changes
Speed

Field workers write notes, not invoices. One flow closes the gap between finished work and getting paid.

Control

The LLM proposes, the human approves — extracted line items are reviewed before an invoice is issued.

Discipline

Even at hackathon speed: a PRD, BDD scenarios and ADRs across 19 modules. The spec survives the demo.

A hackathon build — the flow is real, the volumes are not. No usage metrics are claimed.