Worked on the atlanhq/agent-toolkit repository to enable reliable local end-to-end testing for Claude Desktop by integrating support for a local MCP server. Developed comprehensive documentation that guides developers through configuring Claude Desktop for local E2E testing, detailing required commands, arguments, working directory setup, and environment variable management. Focused on configuration and documentation using Bash and Markdown, the work clarified the local MCP testing workflow and updated build instructions to streamline onboarding and testing processes. No major bugs were addressed during this period, with efforts concentrated on improving developer experience and accelerating validation of MCP workflows in local development environments.