Cem Karaca contributed to the punkpeye/awesome-mcp-servers and docker/mcp-registry repositories by delivering features focused on multi-server proxy management and configuration. He authored comprehensive documentation for the pluggedin-mcp-proxy, clarifying its architecture and usage to streamline onboarding and operational clarity for MCP server deployments. In docker/mcp-registry, Cem implemented configuration management for integrating the MCP Proxy, defining parameters such as server image, API key, and base URL to support consistent deployments and AI interaction management. His work demonstrated proficiency in API integration, configuration management, and technical documentation using Markdown and YAML, with a focus on maintainability and cross-repository alignment.