Integrate FastBill with Guru to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Start from a real workflow other teams are already running.
FastBill
When this happens...
New Offer
New Customer
Customer Updated
Customer Deleted
New Invoice
Invoice Completed
Invoice Canceled
Offer Updated
New Contact
Contact Updated
Contact Deleted
Guru
Automatically do this!
Create Card
Update Card
Delete Card
Ask a Question
Find answers
Create Card in Guru when New Offer in FastBill
Use this flowUpdate Card in Guru when New Offer in FastBill
Use this flowDelete Card from Guru when New Offer in FastBill
Use this flowAsk a Question to Guru when New Offer in FastBill
Use this flowFind answers in Guru when New Offer in FastBill
Use this flowCreate Card in Guru when New Customer in FastBill
Use this flowUpdate Card in Guru when New Customer in FastBill
Use this flowDelete Card from Guru when New Customer in FastBill
Use this flowAsk a Question to Guru when New Customer in FastBill
Use this flowFind answers in Guru when New Customer in FastBill
Use this flowEverything you can automate between FastBill and Guru.
When this happensTriggers
A trigger is an event that starts a workflow.
Triggers when a new offer was created within your FastBill account.
Triggers when a new customer is created within your FastBill account.
Triggers when a customer is updated within your FastBill account.
Triggers when a customer is deleted within your FastBill account.
Triggers when a new invoice is created within your FastBill account.
Triggers when an invoice is completed within your FastBill account.
Action is the task that follows automatically within your FastBill integrations.
Creates a new customer in FastBill.
Creates a new invoice.
Adds full payment for an invoice.
Send an invoice by email.
Creates a revenue entry.
Adds full payment for a revenue.

Follow a simple walkthrough to create, test, and launch your first automation.
Connect your apps
Link the apps you want to automate.
Configure your workflow
Set up triggers, actions, and map your data.
Test & publish
Test your workflow and publish it.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.

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FastBill is a cloud app for German invoicing & accounting. Writing offers and invoices, paying your bills or preparing your tax return is easier than ever with FastBill.
Learn moreGuru is an AI-powered knowledge platform that unifies enterprise search, an internal wiki, and an intranet to deliver fast, trusted answers inside everyday workflows. It connects to tools like Google Drive, Slack, Microsoft Teams, and more to retrieve content, applies permissions-aware AI to surface context-rich responses, and helps teams keep information current through expert verification and automated reminders. The platform includes role-aware AI agents, customizable pages, and granular access controls so organizations can centralize knowledge, reduce time spent searching, and share accurate, on-brand information across departments.
Learn moreSign up for a free viaSocket account, then authorize both your FastBill and Guru accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between FastBill and Guru as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach Guru. No coding required.
Yes. You can set up a workflow where FastBill triggers actions in Guru, and a separate workflow where Guru triggers actions in FastBill. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between FastBill and Guru. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire FastBill and Guru integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.