Sunpeak.ai: A Testing Framework for MCP Apps
Sunpeak.ai is a new open-source testing framework for developers building MCP (Multi-Modal Conversational Platform) apps for ChatGPT and Claude. It replicates the runtimes locally and enables end-to-end testing, visual regression, and live testing against the real platforms.
Why it matters
Sunpeak.ai can significantly streamline the testing process for MCP app developers, reducing the time and effort required to ensure their applications work correctly across different platforms and configurations.
Key Points
- 1Sunpeak.ai is a standalone testing framework for MCP Apps
- 2It replicates the ChatGPT and Claude runtimes locally for testing
- 3Supports unit tests, E2E tests, visual regression, and live testing
- 4Works with any MCP server in any language (Python, Go, TypeScript)
- 5Easy to add to existing projects with a single command
Details
Developing MCP apps for platforms like ChatGPT and Claude can be challenging due to the need to test across multiple hosts, themes, and display modes. Sunpeak.ai aims to simplify this process by providing a comprehensive testing framework that replicates the runtimes locally. Developers can write Playwright tests to call tools, render resources, and assert against the output, with the tests running automatically against both ChatGPT and Claude. The framework also includes unit tests, visual regression testing, and the ability to run live tests against the real platforms. Sunpeak.ai is open-source and MIT licensed, making it accessible to developers building MCP apps in any language.
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