FirstCoast.ai
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Text-to-Invoice and Automated Billing

A solo-operator digital agency was losing billable hours to the oldest leak in services work: time worked but never logged, and invoices assembled weeks later from memory. Now the owner sends one Telegram message when the work ends, and the books stay current.

The problem

  • Hours worked on client projects went unlogged unless the owner stopped to fill in a tracker, which rarely happened mid-day
  • Invoicing meant reconstructing the month from calendars and memory, then hand-building each invoice
  • Retainer invoices had to be remembered, created, and sent on the first of every month, by hand

What we built

A chat-based billing pipeline. The owner sends one plain-English Telegram message from their phone the moment work ends: "Spent 3 hours on the contact form." AI parses the client, hours, and description, matches the client record, logs the entry, and replies with that client's running unbilled total and an invoice-now button.

  • Time capture takes the same effort as texting a friend, so it actually happens
  • One tap turns unbilled hours into a draft invoice in QuickBooks Online, each entry as its own line at that client's rate
  • On the first of each month, every retainer client's invoice drafts itself: the retainer billed in advance, plus any unbilled hours from the month before, on one invoice
  • Overdue invoices surface automatically in Telegram as a weekly nudge
  • Nothing is ever sent automatically; every invoice is a draft until a human reviews and sends it from QuickBooks Online

How it works

A Telegram bot feeding an automation layer, an AI parsing step with deterministic client matching, a Postgres system of record, and a two-way QuickBooks Online integration running against production books. Idempotent by design: re-running a billing cycle cannot double-bill a client.

The results

  • Time is logged at the moment it happens, from a phone, in one sentence
  • Monthly invoicing dropped from an assembly job to a review-and-send click
  • Retainer billing runs itself on the first of the month, with ad hoc hours included on the same invoice
  • Every invoice still passes through human review before a client sees it

How many billable hours did you lose last month?

If logging time takes more than one sentence, it doesn't happen. We build billing systems around how owners actually work.

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Text-to-Invoice and Automated Billing | FirstCoast.ai