AuditJS is a free tool leveraging Sonatype's OSS Index. OSSI exposes a ReST API aggregating several security vulnerability feeds including CVE, CWE and NVD.
Nexus Repository Manager supports REST API endpoints for binary management. Use NXRM endpoints to seamlessly integrate with your tools and CI/CD pipeline.
Nexus Repository Manager starting with version 3+ provides a Provisioning REST API which allows the upload of scripts to Nexus and execution of those scripts.