DMSI DDLS core includes a REST API with API key authentication — sufficient for simple integrations where you control both the WordPress store and the consuming application. But building a custom customer portal, a white-label solution, or an enterprise integration requires more: OAuth 2.0 scoped access tokens so third-party applications can authenticate without exposing your API key, a data-efficient query layer to avoid over-fetching, native SDKs for your development team’s language of choice, and interactive documentation your team can test against in the browser.

DMSI Advanced API extends the DMSI DDLS REST API with OAuth 2.0 and JWT authentication, a GraphQL endpoint, official SDKs for PHP, Node.js, and Python, and interactive Swagger/OpenAPI documentation with live “Try it” functionality. Build your own customer-facing portal using your branding, or integrate DMSI DDLS data into any application in your stack.

API usage analytics and per-client rate limiting give you full visibility and control over how your API is being consumed — essential for multi-tenant applications and public integrations.

Who it is for: Developers building custom portals, agencies building client solutions, SaaS teams building on top of DMSI DDLS, and any developer who has outgrown basic API key authentication and needs proper OAuth infrastructure.