
Marc-André Cournoyer developed advanced profiling and multi-channel tooling features for Shopify’s CLI and roast repositories over a three-month period. He enhanced theme profiling workflows by introducing a robust theme profile command, integrating DevServer-based profiling, and supporting JSON and Speedscope outputs for automated diagnostics. His work included token-based authentication, improved error handling, and cross-environment reliability, leveraging TypeScript, Node.js, and JavaScript. For Shopify/roast, Marc-André integrated Multi-Channel Protocol tooling, aligning dependencies and clarifying environment configuration. His contributions focused on maintainability, test coverage, and developer experience, demonstrating depth in backend development, CLI tooling, and configuration management across complex, production-grade codebases.

May 2025 monthly summary for Shopify/roast focused on delivering MCP Tooling Integration and Development Dependency Alignment to enable multi-channel capabilities and improve developer efficiency. Key changes include integrating MCP tooling across workflow configuration and initialization, providing an example MCP workflow, and aligning dependencies by using the development version of the raix gem to unlock MCP-related capabilities. The MCP client environment handling was clarified by introducing a dedicated 'env' key. Also implemented MCP tooling loading, added an example workflow to demonstrate MCP usage, and fixed stdio MCP issues while renaming the header config to 'env' for consistency.
May 2025 monthly summary for Shopify/roast focused on delivering MCP Tooling Integration and Development Dependency Alignment to enable multi-channel capabilities and improve developer efficiency. Key changes include integrating MCP tooling across workflow configuration and initialization, providing an example MCP workflow, and aligning dependencies by using the development version of the raix gem to unlock MCP-related capabilities. The MCP client environment handling was clarified by introducing a dedicated 'env' key. Also implemented MCP tooling loading, added an example workflow to demonstrate MCP usage, and fixed stdio MCP issues while renaming the header config to 'env' for consistency.
January 2025 monthly summary for Shopify/cli: Delivered Theme Profiling Feature with a theme profile command and DevServer-based profiling workflow, including enhanced error handling, CLI flags, tests, and tooling integration for Shopify themes. Added environment-aware profiling via --environment flag and completed tooling integration, docs regeneration, and manifest refresh. Result: faster, more reliable theme debugging, improved developer experience, and better cross-environment stability across themes.
January 2025 monthly summary for Shopify/cli: Delivered Theme Profiling Feature with a theme profile command and DevServer-based profiling workflow, including enhanced error handling, CLI flags, tests, and tooling integration for Shopify themes. Added environment-aware profiling via --environment flag and completed tooling integration, docs regeneration, and manifest refresh. Result: faster, more reliable theme debugging, improved developer experience, and better cross-environment stability across themes.
December 2024 monthly summary for Shopify/cli: Delivered the enhanced Shopify Theme Profile Command with streamlined profiling for theme pages, enabling automated analysis and faster diagnostics. Implemented JSON output mode, Speedscope integration, and optional raw JSON, with token-based authentication and robust URL/API validation. Documentation, examples, tests, and generated docs were updated to support adoption and reliability. Dependency management was tightened via manifest refreshes and lockfile updates to ensure reproducible builds. Overall, the work improves performance visibility for theme developers and strengthens security, test coverage, and maintainability.
December 2024 monthly summary for Shopify/cli: Delivered the enhanced Shopify Theme Profile Command with streamlined profiling for theme pages, enabling automated analysis and faster diagnostics. Implemented JSON output mode, Speedscope integration, and optional raw JSON, with token-based authentication and robust URL/API validation. Documentation, examples, tests, and generated docs were updated to support adoption and reliability. Dependency management was tightened via manifest refreshes and lockfile updates to ensure reproducible builds. Overall, the work improves performance visibility for theme developers and strengthens security, test coverage, and maintainability.
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