SOARCA is an open-source Security Orchestration, Automation and Response (SOAR) platform that automates threat and incident response workflows through standardized security playbooks. The tool ingests, validates, and executes CACAOv2 (Collaborative Automated Course of Action Operations) security playbooks via a JSON API interface. It supports multiple communication protocols including HTTP(S), SSH, and OpenC2 for native integrations. SOARCA provides an MQTT interface that enables custom integrations and extensibility for organizations with specific automation requirements. The platform is built around standardized formats and technologies, promoting interoperability across security tools and systems. The tool is designed for research and innovation purposes, allowing Security Operations Center (SOC), Computer Emergency Response Team (CERT), and Cyber Threat Intelligence (CTI) professionals to experiment with playbook-driven security automation approaches.