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Fastbill connector

Back to the connector overview, authentication methods, and actions.
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18 Sept 2026
data-syncAdded Data Sync support for articles, contacts, customers, documents, estimates, expenses, invoices, projects, recurring invoices, revenues, templates and time entries, so these collections can be kept in sync on a schedule. Most page through FastBill’s LIMIT and OFFSET parameters, and invoices also sync incrementally, pulling only records changed since the last run. Added LIMIT and OFFSET inputs to List Documents, which now requests a full page by default so its documents page correctly.
fastbill_list_articles, fastbill_list_contacts, fastbill_list_customers, fastbill_list_documents, fastbill_list_estimates, fastbill_list_expenses, fastbill_list_invoices, fastbill_list_projects, fastbill_list_recurring_invoices, fastbill_list_revenues, fastbill_list_templates, fastbill_list_time_entries
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9 Sept 2026
breaking bug-fix description-fixList Revenues no longer accepts CURRENCY_CODE, which Fastbill does not support for revenue entries; filter on the CURRENCY_CODE field of the returned rows instead. Update Article now requires TITLE alongside ARTICLE_ID, because Fastbill blanks an article title whenever an update omits it, so resend the current title on every update. Also fixes a 0% project VAT rate that would not save, and rejected document, invoice, revenue and recurring-schedule calls that previously looked successful.
fastbill_create_document, fastbill_create_estimate, fastbill_create_invoice, fastbill_create_recurring_invoice, fastbill_delete_estimate, fastbill_get_time_entry, fastbill_list_contacts, fastbill_list_customers, fastbill_list_estimates, fastbill_list_expenses, fastbill_list_invoices, fastbill_list_revenues, fastbill_send_invoice_email, fastbill_set_invoice_paid, fastbill_set_revenue_paid, fastbill_update_article, fastbill_update_contact, fastbill_update_customer, fastbill_update_invoice, fastbill_update_project
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3 Aug 2026
new-actionsAdded inbound webhook (events) support. StackOne now auto-provisions a Fastbill webhook on connect (covering the enabled events, via the webhook.create API service) and removes it on disconnect, routing customer, contact, invoice, and estimate events to your integration; includes a webhook events setup guide.