Overview

The Altoviz API is a RESTful HTTP API that lets you integrate invoicing and accounting capabilities directly into your application. Every action available in the Altoviz web app is also available via the API.

Key highlights:

• REST + JSON — standard HTTP verbs, predictable resource URLs, JSON request and response bodies
• API key authentication — simple bearer token, no OAuth flow required
• Webhooks — receive real-time event notifications when data changes in Altoviz
• Pagination — cursor-based pagination for all list endpoints
• Rate limiting — generous limits with standard headers so you can monitor usage
• 100% free — the API is free for developers and usually free for your users too — see pricing

Use cases

You created a great app like a CRM, a time tracker, a calculation tool or else, that needs to emit invoices ? Don’t lose time to reinvent the wheel and use the Altoviz platform.

It’s 100% free for you and also most of the time free for your users. Check our pricing.

Getting started

Page	Description
Introduction	Overview of the API, base URL, and first request
Authentication	How to create and use an API key
Create account	Set up an Altoviz account for development and testing
Change log	History of API changes and additions

Guides

Page	Description
Schema	Data types, date formats, and field conventions used across the API
Pagination	Cursor-based pagination for list endpoints
Errors	HTTP status codes and structured error response format
Rate limit	Request limits and how to handle 429 responses
Webhooks	Subscribe to real-time events for data changes in Altoviz
Logs	Inspect API request and response logs in the dashboard
Security	HTTPS, key rotation, and security best practices

Resources

Page	Description
Code samples	Ready-to-use examples in multiple languages
Best practices	Tips for building reliable and efficient integrations
FAQ	Frequently asked questions

Any question?

If you have any question regarding the API, feel free to contact us by chat or by email.