What actions can I run in FastBill?

33 actions are available, including "Get Articles", "Get Contacts", and "Get Customers", and more. Run them from any trigger in your automation stack — map fields once and they execute automatically.

Do I need to write code to automate this?

No. Most automations are built visually on the canvas by picking triggers, actions, and mapping fields. You can add custom JavaScript with Functions when advanced logic is needed — but it is never required.

Is the integration secure?

Yes. Connections are authenticated per account, credentials are encrypted at rest, and you can enforce approvals and team-level access controls on any automation.

FastBill Integrations

Online invoicing and billing software for freelancers and small businesses. When FastBill posts a transaction, update records or alert finance automatically.

Explore Documentation

GDPR
Data Encryption
2FA
Local Data Region

Watch EventsTriggers when a new event occurs.
Get ArticlesRetrieves all articles from the service.
Get ContactsRetrieves all contacts.
Get CustomersRetrieves all customers.
Get DocumentsRetrieves all documents from the service.
Get InvoicesRetrieves all invoices.
Get ProjectsRetrieves all projects.
Get Recurring InvoicesRetrieves all recurring invoices.
Cancel an InvoiceCancels an invoice.
Complete an InvoiceMarks an invoice as completed and updates its status in the system.
Create a ContactCreates a new contact in the specified service.
Create a CustomerCreates a customer in the system.
Create a DocumentCreates a new document in the specified service.
Create an ArticleCreates a new article.
Create an InvoiceCreates an invoice with specified details in the service.
Create a ProjectCreates a new project in the selected service.
Create a Recurring InvoiceCreates a recurring invoice based on the provided parameters.
Delete a ContactDeletes a contact from the specified service.
Delete a CustomerDeletes a customer from the service.
Delete an ArticleDeletes an article from the service.
Delete an InvoiceDeletes an invoice from the system.
Delete a ProjectDeletes a project from the service.
Delete a Recurring InvoiceDeletes a recurring invoice from the system.
Lock an InvoiceLocks an invoice to restrict its modifications.
Make an API CallPerforms an arbitrary authorized API call.
Mark an Invoice as PaidMarks an invoice as paid in the system.
Send an Invoice by EmailSends an invoice to a recipient via email.
Send an Invoice by PostSends an invoice by post to a specified recipient.
Update a ContactUpdates a contact in the system with the specified details.
Update a CustomerUpdates a customer's information.
Update an ArticleUpdates an article in the system.
Update an InvoiceUpdates an invoice with new information or changes.
Update a ProjectUpdates a project with new information, such as details, status, or contributors.
Update a Recurring InvoiceUpdates a recurring invoice with new details.

When to use FastBill

Common scenarios where FastBill automation saves time and reduces manual work.

Trigger workflows automatically when "Watch Events" fires in FastBill — start multi-step automations without polling or manual checks.
Automate "Get Contacts" in FastBill as a workflow step — combine it with triggers, filters, and AI steps for full-pipeline coverage.
Layer "Get Contacts" from FastBill with filters, transforms, and AI steps to build automations that match your exact business logic.

How to connect

Paste your credentials once — WEXTL® stores them encrypted and reuses the connection across every workflow that needs it.

Full API documentation

Enter your credentials below. WEXTL stores them encrypted and uses them only to call the API on your behalf.

Connecting FastBill to WEXTL®

Field	Type	Help
Email AddressRequired	email	Your Email Address
API KeyRequired	password	Log in to FastBill → Settings → Generate/Copy API Key.

Use in workflow automation

Start from FastBill’s Watch Events trigger and the run begins the moment there’s something new — no cron job to babysit, no one remembering to check.

Add Create a Contact as the next step, then branch, filter or hand off to the rest of your stack. The whole path stays on one canvas your team can read.

This integration brings 34 ready-made steps for finance work, and every run records what went in and what came back.

FastBill workflow on the canvas: Watch Events then Create a Contact

Frequently asked questions

Common questions about automating FastBill in your workflows.

FastBill has 1 trigger, including "Watch Events". Use them to start workflows the moment FastBill events fire — no polling required.

Field

Type

Help

Email AddressRequired

Your Email Address

API KeyRequired

password

Use in workflow automation

Start from FastBill’s Watch Events trigger and the run begins the moment there’s something new — no cron job to babysit, no one remembering to check.

Add Create a Contact as the next step, then branch, filter or hand off to the rest of your stack. The whole path stays on one canvas your team can read.

This integration brings 34 ready-made steps for finance work, and every run records what went in and what came back.

FastBill Integrations

When to use FastBill

How to connect

Use in workflow automation

Frequently asked questions

FastBill Integrations

When to use FastBill

How to connect

Connect FastBill to any app in workflows

Use in workflow automation

Frequently asked questions

Connect FastBill to any app in workflows

Connect FastBill to any app in workflows

Connect FastBill to any app in workflows

FastBill Integrations

FastBill triggers and actions

When to use FastBill

How to connect

Use in workflow automation

Frequently asked questions

What triggers does FastBill support?

What actions can I run in FastBill?

Do I need to write code to automate this?

Is the integration secure?

FastBill Integrations

FastBill triggers and actions

When to use FastBill

How to connect

Connect FastBill to any app in workflows

Use in workflow automation

Frequently asked questions

What triggers does FastBill support?

What actions can I run in FastBill?

Do I need to write code to automate this?

Is the integration secure?

Connect FastBill to any app in workflows

Connect FastBill to any app in workflows

Connect FastBill to any app in workflows