Unit4 provides cloud ERP software for service-centric organizations including professional services, public sector, education, and non-profits. Their REST APIs cover financials, HR, payroll, project management, procurement, inventory, and business planning through the ERPx platform, plus PEPPOL-based electronic document exchange via Unit4 Access Point.
- ERPx REST API — Full-featured ERP API covering 13 functional modules via the Unit4 Developer Portal
- Access Point REST API — PEPPOL electronic document exchange (ap.unit4.com/rest.html)
- Developer Portal
- API Reference
- Authentication & Security
- Rate Limits & Quotas
- GitHub Organization
- Blog
- X / Twitter
ERPx APIs support OAuth 2.0 via the Client Credentials Flow (M2M) and Federated SSO via Unit4 Identity Services (U4IDS / OpenID Connect). Access Point uses HTTP Basic Authentication (RFC 2617) over HTTPS.
Kin Lane <kin@apievangelist.com>