Biflus API
Read and write your Biflus data from your own code: clients, items, categories, and invoices. Whether you're connecting Zapier, syncing another tool, or automating something for yourself, this is everything you need — plain HTTP, JSON in and out, no SDK required.
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Base URL:
https://api.biflus.com
Last updated 2026-08-08
Get started
Two pages to read before your first real request — after that, every resource works the same way.
Core resources
Full create/read/update/delete on everything an invoice is built from. Pick one below, or start with Invoices — it's what most integrations are actually for.
Clients
The people and companies you invoice.
Items
Your catalog of things you sell.
Categories
Groups for organizing items.
Invoices
Create one, generate a real PDF, move it to Paid.
Webhooks
Get notified the moment an invoice is paid.
Flus AI
Message the assistant built into Biflus from your own code.
planned
Reference
The rules that apply across every endpoint, not just one resource.