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Spotlight — API Monitor & Debugger

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Overview

Real-time floating overlay that shows all fetch/XHR API calls on any page — no DevTools needed.

Spotlight is a lightweight floating overlay that replaces the DevTools network tab with a convenient, always-on panel for monitoring, filtering, inspecting, and replaying network requests in real-time. WHAT IT DOES • Captures all Fetch and XHR requests automatically as they happen • Monitors WebSocket connections and messages • Detects GraphQL requests and displays operation names • Logs console output (log, warn, error) alongside network activity • Shows a performance waterfall timeline for request overlap and sequencing KEY FEATURES • Smart URL display: shows the most meaningful path segments, not raw truncated URLs • Search & filter: filter by HTTP method, status code, or search with regex support (/pattern/flags) • Request details: view headers, request body, and response body with JSON formatting • Replay & edit: resend any request, or edit the method, URL, headers, and body before sending • Compare: diff two API responses side by side to spot changes • Export: download captured sessions as HAR files for sharing or analysis • Cookie & storage inspector — view localStorage, sessionStorage, and cookies • Dark mode: full light and dark theme support • Keyboard shortcut: toggle with Ctrl+Shift+Q (Cmd+Shift+Q on Mac) WHO IT'S FOR • Frontend developers debugging API integrations • QA engineers verifying network behavior • Mobile developers testing responsive web views • Anyone who wants quick network visibility without opening DevTools The panel is draggable, resizable, and stays out of your way. It runs entirely in-browser with zero external connections, no data ever leaves your machine.

Details

  • Version
    1.0.0
  • Updated
    March 26, 2026
  • Size
    81.05KiB
  • Languages
    English
  • Developer
    Email
    aaryan.kandiah@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

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