FastBill
German invoicing and financial-management tool (Frankfurt) for freelancers and small teams.

How the flow runs
A native automation connects FastBill to calls, CRM and run history.
Use cases with Famulor
How to automate FastBill with the native automation platform.

Create a FastBill customer from a verified phone lead

Trigger dunning calls for unpaid invoices automatically

Confirm recurring-invoice changes by AI call
What the engine includes
No-code flows for FastBill: triggers, AI steps, CRM and history in Famulor.
Triggers
Calls, bookings, inbound webhooks, schedules and CRM events start the flow.
AI steps
Generate text, extract fields, branch and loop, inside the builder.
CRM & apps
Native CRM actions plus 1000+ connected apps on the automation platform.
FastBill, designed for AI agents.
Convert FastBill to agentic-first. Milian builds the automation workflow, connects it to your assistant, and runs it in the conversation or on a schedule.
AI-Native Automation
Milian turns your brief into a workflow and connects it to the right assistant.
Milian Missions
Run work now, during a conversation, or on a schedule. Milian uses your connected apps.
Agentic Accounting & Finance
Agents read context, write data back, and complete the next process step themselves.

Available actions
Actions Famulor can run in FastBill from an automation run.

Create customer
Create a customer

Create invoice
Create an invoice

Get invoice
Retrieve an invoice

Available triggers
Events in FastBill that start a native Famulor flow.

New invoice
Fires when an invoice is created

Invoice paid
Fires when an invoice is paid
Live in three steps
Connect FastBill in the automation platform.
01
Connect your FastBill account
OAuth, API key or MCP: credentials stay encrypted on the connection.
02
Build the automation
Wire triggers, AI steps and FastBill actions in the visual builder.
03
Test and activate
Dry-run against sample data, then activate. Every run lands in history.
Ready to connect FastBill to the native engine?
Start an automation run: triggers, AI steps, CRM and run history, plus 1000+ more apps.
FastBill FAQ
Frequently asked questions about the FastBill integration
Setup takes less than 5 minutes. Connect your FastBill account, configure your voice agent preferences, and start automating your phone calls immediately.


