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Sidekicko is a visual browser DevTools layer for AI coding agents. It works as a browser extension/overlay that can be opened on a site with ⇧⌘K, helping developers select page elements, inspect styles and component context, make visual tweaks, and export the resulting changes to Claude Code, Cursor, or other agent-based workflows.
Its focus is not to replace a full IDE, but to turn visual issues like “this UI doesn’t look right” into actionable code-change context. The element picker can capture selectors, text, classes, bounds, and computed styles. Visual controls let you adjust spacing, colors, border radius, typography, layout, shadows, opacity, and image fitting with real-time preview. The layout-aware panel shows relevant controls depending on scenarios such as flex, grid, text, and images. For React projects, it can also read component names, props, and hierarchy, which is more useful for helping AI locate the code than plain CSS selectors alone.
Sidekicko’s standout feature is AI handoff: it can export before/after diffs, element context, and reports at different fidelity levels, including minimal selector diffs, standard component context, or full computed-style snapshots. The Plus plan offers MCP handoff, allowing the browser overlay to connect to agent tools when supported. It also keeps a clipboard fallback, making it easy to copy a change report into other tools.
The free plan is free forever and includes element selection, visual controls, and clipboard export, making it suitable for trying local UI fixes. Plus costs $8 per month and adds MCP handoff, React component context, and full-fidelity reports. Plus Lifetime is a one-time $39 purchase and includes shared annotations, team exports, and priority support.
The main advantages are its focused workflow and tight integration with AI coding agents, which can reduce screenshot-based descriptions and prompt ambiguity. The free plan is also enough to experience the core workflow. Limitations include the lack of clear information on open source status, self-hosting, security and privacy, browser compatibility, and support beyond React; the real-world compatibility scope of MCP also needs to be verified. It is a good fit for solo developers and small teams using Cursor or Claude Code for frontend iteration, especially product engineers who frequently deal with visual details.
The collected information does not specify availability in mainland China, payment methods, or localization support, so this remains unknown. If access or payment is limited, you can temporarily use Chrome DevTools, React Developer Tools, VisBug, and similar tools together with Cursor/Claude Code to manually pass context.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on sidekicko.com official site.
sidekicko.com is an United States Dev Tools provider. TG4G tracks its product information, an overall rating of 8.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach sidekicko.com directly.