Generate invoices automatically when appointments are booked

When a client books a session in Cal.com, automatically create a draft or ready-to-send invoice in Seamlss to streamline your billing process.

Try:

See all Cal.com + Seamlss integrations or talk to a human

Trusted by teams already building on Knit·

4.9/5 on G2·

Google for Startups Accelerator

How Knit builds this workflow

The Agent researches both APIs and wires the trigger on one side to the action on the other — no pre-built connector required. Here is the vocabulary it has to work with.

Cal.com Explore Cal.com →

Triggers

New booking made

Fires when a new booking or appointment is made in Cal.com.

Booking rescheduled or canceled

Fires when a booking in Cal.com is changed or canceled.

New customer

Fires when a new customer books for the first time in Cal.com.

Actions

Create a booking

Creates a new booking or appointment in Cal.com.

Cancel or reschedule a booking

Cancels or moves a booking in Cal.com.

Create or update a customer

Creates or updates a customer record in Cal.com.

Add the booking to a calendar

Adds a booking from Cal.com to a connected calendar.

Seamlss Explore Seamlss →

Triggers

New invoice created

Fires when a new invoice is created in Seamlss.

Payment received

Fires when a payment is recorded in Seamlss.

Invoice overdue

Fires when an invoice in Seamlss passes its due date unpaid.

Expense recorded

Fires when a new expense is recorded in Seamlss.

Actions

Create invoice

Creates a new invoice in Seamlss.

Record payment

Records a payment against an invoice in Seamlss.

Create expense

Creates a new expense entry in Seamlss.

Sync customer record

Syncs a customer's billing record in Seamlss.

Schedule follow-up consultations when invoices are paid When a payment is received in Seamlss, automatically create a new booking or update the customer's profile in Cal.com so their next session is prepared. See details

Sync new appointment contacts directly to your accounting records When a new customer books for the first time in Cal.com, automatically sync their record into Seamlss so financial history stays tied to the right profile. See details

See all Cal.com + Seamlss integrations → · Browse the full workflow library →

Enterprise-grade security

Visit our Security Center Review the DPA

FAQ

Common questions

Can Knit build “Generate invoices automatically when appointments are booked” between Cal.com and Seamlss?

Yes — describe it in the box above and Knit's Integrations Agent researches Cal.com and Seamlss's public API docs (or your own uploaded docs) and builds a working workflow, whether or not either app already has a pre-built connector.

How long does it take to build?

Minutes to a first working version, not weeks — you test it against real data before it goes anywhere near production.

Can an invoice be created automatically when an appointment is booked?

Yes, whenever a client schedules a paid session in Cal.com, a corresponding invoice can be generated automatically in Seamlss.

How do customer records stay consistent between appointment booking and accounting?

When a new customer is added in Cal.com, their client profile automatically syncs over to Seamlss for streamlined invoicing and record-keeping.