What is appstore-screenshot-generator-mcp?

This project turns plain app screenshots into polished App Store preview images. It wraps each screenshot inside a realistic picture of an iPhone 16 Pro, adds a bold headline and an optional smaller subtitle above the phone, and outputs an image sized 1284 by 2778 pixels, the exact size Apple accepts for the 6.5 inch screenshot slot in App Store Connect. It works as an MCP server, which is a small program that lets an AI assistant like Claude call specific tools on your behalf rather than you typing commands yourself. Once installed and added to a configuration file, you can simply share your screenshots with Claude and ask it to create App Store mockups. Claude will suggest a color theme, propose headline text, wait for your approval, and then generate the final images. The tool offers three underlying capabilities. One turns a single screenshot into a finished mockup, letting you choose a silver or dark phone frame, background color or gradient, text color, and whether the phone bleeds off the bottom edge of the image. A second does the same thing in batch for many screenshots at once. A third looks at your screenshots and suggests color themes pulled from the app's own dominant colors rather than fixed presets, offering options like matching the app's background, a bold gradient built from its accent color, or a softer tinted version, while always leaving room for you to specify your own custom colors instead. The tool also tries to prevent a phone appearing inside a phone by warning you if a source image already looks like it has a mockup frame applied. Installation is a single command using a tool called uvx, and the project is licensed under MIT, meaning it can be used, modified, and shared freely, including commercially, as long as the copyright notice is kept.