SiteGiant API access and usage

Overview

SiteGiant provides an Open API for selected use cases. Open API access is not available on all plans.

How to get access

To use the Open API, you need to:

Upgrade to ERP Ultimate or above.
Purchase the Open API add-on.

Open API access is not available on lower plans such as ERP Value Plus.

What is required to access the Open API

To proceed with Open API access, prepare:

A supported plan: ERP Ultimate and above
Open API add-on purchase
Your integration requirement or the app/system you want to connect

If needed, also prepare your contact details for follow-up:

Contact Name
Phone Number
Email Address

What the API can be used for

The API is stated to support:

Products
Inventory syncing

Limitations

The API does not support all integration scenarios.

Known limitations mentioned include:

Existing Webstore API access is not the same as Open API.
If Open API is required for third-party integration, an upgrade to ERP Ultimate and the Open API add-on is still needed.
It is not suitable for marketplace-style website management.
It does not support managing marketplaces through Open API.
It cannot be used to sync only selected WooCommerce orders into SiteGiant for WCFM marketplace use cases.
Some data export needs, such as exporting data from the All Orders page for monthly reporting, are file-based and do not have API support for that specific requirement.

Documentation

An API document link is available here:

SG ERP API Document

Notes

If you need custom API integration, you may need to share your integration requirements and contact details for follow-up on package and compatibility.

Updated on: 12/05/2026

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