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fix(server): preview_resize reports measured desktop viewport dimensions #22954

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juliusmarminge wants to merge 2 commits into from
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fix(server): preview_resize reports measured desktop viewport dimensions #22954

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41c4beb
fix(preview): report measured desktop viewport after resize
juliusmarminge Oct 21, 2026
859cc41
fix(preview): keep desktop status available during dialogs
juliusmarminge Oct 21, 2026
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2 changes: 1 addition & 1 deletion apps/server/src/mcp/toolkits/preview/tools.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ const PreviewNavigateTool = safeBrowserTool(
const PreviewResizeTool = safeBrowserTool(
Tool.make("preview_resize", {
description:
"Resize a collaborative browser tab, optionally selected by tabId. Use {mode:'fill'}, {mode:'freeform',width:1024,height:768}, or {mode:'preset',preset:'iphone-12-pro',orientation:'portrait'}. This changes CSS layout breakpoints without changing the desktop browser user agent.",
"Resize a collaborative browser tab, optionally selected by tabId. Use {mode:'fill'}, {mode:'freeform',width:1024,height:768}, or {mode:'preset',preset:'iphone-12-pro',orientation:'portrait'}. This changes CSS layout breakpoints without changing the desktop browser user agent. The returned viewport is measured at response time. Desktop sizing applies asynchronously; confirmed:false means the requested fixed size was not observed yet, which can reflect pending application or a size that could not be applied. Call preview_status to recheck the measured viewport rather than repeating resize.",
parameters: PreviewAutomationResizeInput,
success: Schema.Struct({ ...PreviewAutomationResizeResult.fields, ...presentationFields }),
failure: PreviewToolFailure,
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