> ## Documentation Index
> Fetch the complete documentation index at: https://spidocs.chargebee.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

**Partner SPI** is designed to enable seamless integration with Chargebee, allowing partners to extend and enhance the platform's functionality. This SPI offer a standardized interface for partners to connect their services, enabling efficient workflows and exceptional user experience.
It is built for scalability and easy integration, helping partners deliver specialized functionality that caters to Chargebee's diverse customer needs.

You can explore the OpenAPI specifications for Partner SPI in the GitHub repository [here](https://github.com/chargebee/cb-partner-spi).

## Key Features of Partner SPI

1. ### Tax Calculation
   Integrate tax computation services effortlessly to ensure compliance and achieve real-time accuracy.
2. ### Tax Reconciliation
   Submit invoice and credit note data to external systems for tax reconciliation.
3. ### Tax Registration Number Validation
   Validate tax registration numbers instantly to simplify customer onboarding and meet compliance requirements.
4. ### E-invoicing
   Seamlessly generate and submit compliant electronic invoices through connected e-invoicing networks to meet country-specific regulatory mandates and reduce manual processing.