GritInvoice & Billing Tracker
An AI agent that watches your receivables around the clock — monitoring due dates, sending payment reminders, reconciling incoming payments, and flagging overdue accounts before they become cash flow problems.
The Problem
Money you're owed shouldn't require a spreadsheet and a calendar.
You send invoices. Some get paid on time. Some don't. Tracking which is which — and following up on the ones that are late — becomes a part-time job nobody signed up for.
Small and mid-size businesses lose significant revenue not because clients won't pay, but because nobody followed up at the right time. The invoice went out, the due date passed, and by the time someone noticed, the client had moved on to other priorities. A polite reminder at day 7 has a much higher success rate than a stern email at day 45.
Most accounting software can generate invoices and mark them paid, but the gap between "sent" and "paid" is a manual process. Someone has to check bank deposits against open invoices, decide when to send reminders, escalate overdue accounts, and keep the books accurate. For businesses handling dozens or hundreds of invoices monthly, this is hours of work that doesn't scale.
Grit automates the entire lifecycle between invoice sent and payment received. It monitors due dates, sends professionally timed reminders, reconciles deposits against open invoices, and surfaces overdue accounts before they age into problems. Lightweight, always on, and precise about the numbers.
How It Works
Every invoice, watched.
Grit runs on a Haiku-class model for fast, cost-efficient processing — designed to monitor continuously without burning through compute. Here's the workflow:
Tango connects to your invoicing system — QuickBooks, Xero, FreshBooks, or a custom setup — and ingests every outgoing invoice. It captures the amount, due date, recipient, and payment terms. New invoices are picked up automatically as they're created.
The agent watches for incoming payments and matches them against open invoices. Partial payments, overpayments, and payments that don't reference an invoice number are all handled — Tango uses amount matching, date proximity, and payer identity to reconcile even messy payment data.
Tango sends payment reminders on a schedule you configure — a courtesy notice before the due date, a gentle reminder after, and escalating follow-ups as invoices age. Tone, timing, and frequency are all customizable. The reminders are professional, not robotic.
When an invoice crosses your overdue threshold, Tango flags it and alerts you with the full context — how much, how late, payment history with that client, and whether reminders have been sent. You get a clear picture of exposure, not just a list of late invoices.
Tango produces regular summaries: total outstanding, aging breakdown, collection rate trends, and clients that consistently pay late. These reports help you spot patterns and make decisions about credit terms, not just chase individual invoices.
The OS Underneath
More than a model. An operating system.
Grit runs on Montebelle's agent operating system — the same infrastructure that powers enterprise agents, optimized for financial accuracy.
Payment Memory
Tango maintains a persistent record of every invoice, payment, reminder, and client interaction. It remembers that Client A always pays on day 28, Client B responds to the second reminder, and Client C needs a phone call. This memory informs timing and escalation decisions automatically.
Reconciliation Verification
Before marking any invoice as paid, Tango cross-references the payment amount, payer, and date against the invoice record. Ambiguous matches are flagged for human review rather than auto-resolved. In financial operations, false confidence is worse than uncertainty — the agent knows this.
Fleet Learning
When the Montebelle fleet discovers better reminder timing, improved reconciliation heuristics, or new failure patterns in payment matching — those improvements distribute to every Tango agent. Your billing automation benefits from collective intelligence while your financial data stays completely private.
Ready to stop chasing payments manually?
Grit is one configuration of the Montebelle finance agent. Your version gets built around your invoicing system, payment terms, and escalation preferences.
Let's TalkFixed price. Two to four weeks. You own the agent.