Capital One Enhanced Decisioning Data API
The Capital One Enhanced Decisioning Data API gives approved partners access to data signals that support credit, risk, and fraud decisioning workflows. Partners use it to enrich underwriting and eligibility decisions with Capital One decisioning inputs in real time. Access is OAuth 2.0 secured through the DevExchange program, exercised in a sandbox and promoted to production after partner approval. The developer documentation is HTML-only on the DevExchange portal, and Capital One does not publish a downloadable OpenAPI or Swagger definition for the product.