moonpeak dev # your project
moonpeak inspect --server https://moonpeak-ai.com/mcp # any serverThe inspector is a real MCP Apps host: it connects to your server with the MCP client, reads ui:// resources and renders them in a sandboxed iframe through the official AppBridge, exactly like ChatGPT and Claude do.
Sidebar
| Control | |
|---|---|
| Tool | every tool on the server; tools with a View first |
| Simulation | fixtures for that tool; picking one runs it |
| Host | ChatGPT-style or Claude-style chrome, host info and capabilities |
| Theme | light or dark, sent live to the View |
| Device | desktop, tablet or mobile width (mobile also reports a touch platform) |
| Display mode | inline, picture-in-picture or fullscreen |
| Input | edit the arguments and Run the real handler |
| Output | edit the structured content and Apply to re-render without a backend |
| Log | every bridge message and useLog call |
What the View can do
Calls to callTool, sendMessage, updateModelContext, openLink, downloadFile and display mode requests are handled like a host would: tools run against your server, messages appear in the chat, model context appears in a panel, links open in a new tab and downloads save. In the ChatGPT host, window.openai is there too (globals, widget state).
Everything you set lives in the URL. See URL parameters.