Quey is available on desktop

Dev mode

Meet
Devmode

Devmode turns the browser into a practical inspection layer for UI work. Connect what you see in the browser to the design values and source hints behind it — then hand that context directly to your agent.

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Precision Tools
Edit exactly what you mean, nothing more, nothing less.
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Type a change and press Enter to run a demo
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Why it matters

Built for the browser-to-agent handoff.

01

Source hints

See component and file clues when the page exposes React source context.

02

Design inspection

Review typography, color, spacing, radius, and layout values from the selected UI.

03

Agent-ready

Copy useful context instead of describing the UI from memory.

Workflow

The same simple loop on every page.

Each product surface uses the same structure so visitors can compare capabilities without relearning the page.

01

Toggle

Open Devmode

Use Quey from the browser while the app is running.

02

Inspect

Select an element

Capture identity, location, design values, and source hints.

03

Handoff

Send context to the agent

Use the captured evidence to make edits faster and clearer.

Inspection layer

A browser-first dev mode for UI iteration.

Inspect the actual product UI before changing code. Devmode connects what you see in the browser to the design values and source hints behind it.

Element selection

Style values

Semantic breadcrumbs

Copyable context

FAQ

Common questions

What does Devmode show me?

Select any element in the live app to see its semantic breadcrumb, computed style values, and source file hints when a framework exposes them.

Is Devmode read-only?

Yes — Devmode is for inspection. To make live style edits in the browser, use the Style tool in the Quey toolbar instead.

Does Devmode work on any website?

It works on any page you can load in Chrome. Source file hints only appear when the running app exposes framework-level source context.

Inspect then edit

Use the live page as your source of truth.

Install Quey and capture the UI context before starting the source edit.

Add to Chrome
Quey

Quey captures live browser UI context for source-aware coding agent workflows.

© 2026 Quey. Built for extension-first coding workflows.