For AI agents: visit https://docs.fonoa.com/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI. Append .md to any documentation page URL to get its markdown version.

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v1.0

API Reference

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v1.0API Reference

Introduction

Welcome to Fonoa
Getting Started with Fonoa API

Details & Concepts

API Versioning
- Sample Request
Authentication
Naming Conventions
Response Codes
Webhooks
Sandbox environment
API terms of use

Fonoa Lookup

About Fonoa Lookup
What API version to use
Lookup Endpoints V2
Instant Lookup
- Find a tax identification numberpost
Lookup Endpoints V1
Lookup webhook events
Lookup sandbox environment

Fonoa Tax

About Fonoa Tax
Request a Calculation
View a Calculation
Update a Calculation
Tax Endpoints
- Request a calculationpost

Fonoa E-invoicing

About Fonoa E-Invoicing
Quickstart
Amounts and rounding
Submit a transaction
Get the result
Other scenarios
Fonoa E-Invoicing Endpoints
- Transactions
- Onboarding
Errors, Warnings and how to handle them

Get in touch

Contact us

Contact Support

If you have any questions related to the Fonoa API, feel free to reach out via [email protected].

Updated 12 months ago

Failure response

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Updated 12 months ago

Failure response

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