Exact Online REST / OData API
REST and OData API (v1) for Exact Online covering financials, sales, purchasing, inventory, HRM, CRM, project management, and master data. Authentication is OAuth 2.0; applications register in the Exact App Center and use regional auth/token endpoints (e.g. start.exactonline.nl for the Netherlands, start.exactonline.co.uk for the UK).
Documentation
Other Resources
Reference
https://support.exactonline.com/community/s/article/All-All-DNO-Content-restrefdocs
Introduction
https://support.exactonline.com/community/s/article/All-All-DNO-Content-restintro
OAuth Authorization Endpoint
https://start.exactonline.nl/api/oauth2/auth
OAuth Token Endpoint
https://start.exactonline.nl/api/oauth2/token
Sample Code
https://support.exactonline.com/community/s/article/All-All-DNO-Content-restsamplecode
APIsJSON
https://raw.githubusercontent.com/api-evangelist/exact-online/refs/heads/main/apis.yml