SkillTree

Invoice Chaser

Writes the payment follow-up for an overdue invoice, calibrated to how late it is

What it needs
overdue invoice details, brain.md payment terms, days overdue
What you get
payment reminder email matched to the lateness stage
Replaces
~30min/invoice drafting reminders and tracking who was chased
Works with
QuickBooks, Xero, Stripe

This one is free right now

Grab it from the open-source library — no signup, MIT licensed. It reads your brain.md and writes in your voice.

Get it on GitHub