Guesty + fastbill Integrations, Built by an AI Agent
Put Guesty + fastbill to work with AI and enterprise-grade automation
4.9/5 on G2·
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Workflows you can build between Guesty and fastbill
See the kind of workflows teams build with Guesty and fastbill below — describe the exact one you want above and the Agent builds it on demand.
Guesty + fastbill
When a reservation is created or updated in Guesty, generate an invoice in Fastbill.
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Generate invoices automatically when appointments are booked
When a client books a session in Guesty, automatically create a draft or ready-to-send invoice in fastbill to streamline your billing process.
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Schedule follow-up consultations when invoices are paid
When a payment is received in fastbill, automatically create a new booking or update the customer's profile in Guesty so their next session is prepared.
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Sync new appointment contacts directly to your accounting records
When a new customer books for the first time in Guesty, automatically sync their record into fastbill so financial history stays tied to the right profile.
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Browse the full workflow library →
Looking to achieve something else with Guesty and fastbill?
Just describe what you need — the Agent researches both APIs and builds the real automation on demand.
Try Knit FreeTriggers & actions for Guesty and fastbill
Everything Guesty and fastbill can do inside a workflow — the triggers that start one and the actions that run when it fires.
Guesty Explore Guesty →
Guesty is a property management platform designed for short-term rental hosts to manage listings, guest communications, and booking calendars.
TriggersTriggers when a new reservation is created or an existing reservation is updated.
fastbill Explore fastbill →
fastbill is a cloud-based accounting and invoicing software designed for small businesses and freelancers.
TriggersTriggers when a new draft was created within your FastBill account.
Triggers when a new invoice was created within your FastBill account.
Triggers when a new invoice was paid within your FastBill account.
Triggers when a new offer was created within your FastBill account.
Adds full payment for invoice
Adds full payment for revenue
Creates a new customer in FastBill
Creates a new invoice
Converts an invoice draft to a final invoice
Creates a new offer in FastBill
Other Scheduling & Booking apps on Knit
Explore more Scheduling & Booking integrations you can automate with Knit — or describe a custom workflow and the Agent builds it.
3veta
3veta is a communication platform designed for consultants and service providers to manage video meetings, scheduling, and payments.
Acuity Scheduling
Acuity Scheduling is an online appointment scheduling application that allows client-facing businesses to manage booking availability, intake forms, and payments.
Adventure Office
A business management software for outdoor tour operators that manages online reservations, activity scheduling, and customer bookings.
Agendize
Agendize is an online client management and appointment scheduling platform designed to streamline customer interactions and business booking workflows.
allGeo
A field service management platform providing automated workforce scheduling, time tracking, and location management tools.
Appointedd
Appointedd is an online booking and scheduling software that enables businesses to accept appointments and manage staff calendars.
Appointible
Appointible is an online appointment scheduling software that helps service-based businesses manage bookings, staff schedules, and client text reminders.
Appointlet
Appointlet is an online scheduling software that enables businesses to accept client appointments directly into their digital calendars.
Other Accounting apps on Knit
Explore more Accounting integrations you can automate with Knit — or describe a custom workflow and the Agent builds it.
4Pay
4Pay is a digital payment processing platform that enables online businesses to manage transactions, payouts, and customer billing seamlessly.
Aarven
Aarven is a financial management platform designed to help organizations automate bookkeeping, manage invoices, and track business expenses.
AccountEdge
AccountEdge is desktop accounting software that manages sales, purchases, inventory, payroll, and financial reporting for small businesses.
AccountGroove
AccountGroove is a cloud-based invoicing and billing platform designed to streamline client account management and financial tracking.
AccountingSuite
AccountingSuite is a business management software combining cloud accounting, inventory control, and order fulfillment capabilities into one platform.
AdminPulse
AdminPulse is a practice management and time tracking software developed specifically for accounting and bookkeeping professionals.
AdvicePay
AdvicePay is a billing and payment processing platform tailored specifically for fee-for-service financial planning advisors.
AffiniPay
AffiniPay is an online payment processing platform tailored for professional services firms to accept credit cards and eChecks.
Customer Stories
See how leading technology firms are scaling their operations
Amazing Product With Exceptional Support from the team. By using Knit we managed to speed up our development by orders of magnitude.
A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
#1 in Ease of Integrations
4.9 out of 5 stars on G2
Common questions about Guesty + fastbill
Is there a pre-built Guesty + fastbill automation?
Not yet, but Knit's Integrations Agent can build one — describe what you want and it researches Guesty and fastbill's public API docs (or your own uploaded docs) and builds a working automation.
Does this require a pre-built Guesty or fastbill connector?
No. The Agent works whether or not Guesty or fastbill already has a pre-built connector in Knit's catalog — it researches the real API surface either way.
How long does it take to build?
Minutes to build 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 Guesty, a corresponding invoice can be generated automatically in fastbill.
How do customer records stay consistent between appointment booking and accounting?
When a new customer is added in Guesty, their client profile automatically syncs over to fastbill for streamlined invoicing and record-keeping.