OpenDevBrowser Relay

Tracking since Apr 16, 2026.

Changelog

• Apr 22, 2026
  description

  OpenDevBrowser Relay connects OpenDevBrowser to the Chrome tabs you already have open. It lets the runtime attach to a real headed browser session, reuse logged-in state, inspect the page, drive actions, and capture annotations without launching a separate browser.
  
  What it delivers:
  - Reuses existing Chrome tabs through a local relay on `127.0.0.1`
  - Attaches Chrome DevTools Protocol with `debugger` for inspect and action loops
  - Injects page-side helpers with `scripting` for annotation, DOM capture, and in-tab automation
  - Stores relay settings plus the last local annotation payload metadata so the popup can reconnect and reopen recent results
  - Shows relay, handshake, annotate, injected, `CDP`, pairing, and native fallback health directly in the popup
  
  Important behavior notes:
  - The relay and optional native host stay on-device
  - OpenDevBrowser does not send browsing data, page content, or annotation payloads to the developer or third-party analytics services
  - The extension can act on user-opened sites because it needs `<all_urls>` for automation, annotation, DOM capture, and screenshot fallback
  - Restricted pages such as `chrome://`, `chrome-extension://`, and Chrome Web Store pages are not supported targets

  OpenDevBrowser Relay connects OpenDevBrowser to the Chrome tabs you already have open. It lets the runtime attach to a real headed browser session, reuse logged-in state, inspect the page, drive actions, capture annotations, and participate in local browser replay capture without launching a separate browser.
  Generated help in the public package also surfaces adjacent runtime lanes for browser replay, public read-only desktop observation, and browser-scoped challenge handling. This extension participates in the relay-backed browser lane only; it is not a desktop agent.
  
  What it delivers today:
  - Reuses existing Chrome tabs through a local relay on `127.0.0.1`
  - Attaches Chrome DevTools Protocol with `debugger` for inspect and action loops
  - Injects page-side helpers with `scripting` for annotation, DOM capture, and in-tab automation
  - Participates in user-triggered local browser replay capture through the existing screenshot lane
  - Stores relay settings plus the last local annotation payload metadata so the popup can reconnect and reopen recent results
  - Shows relay, handshake, annotate, injected, `CDP`, pairing, and native fallback health directly in the popup
  
  Important behavior notes:
  - The relay and optional native host stay on-device
  - OpenDevBrowser does not send browsing data, page content, or annotation payloads to the developer or third-party analytics services
  - Browser replay manifests, preview images, and sampled frames stay on-device in the chosen output directory
  - Public desktop observation is a separate read-only core runtime lane and is not provided by this extension
  - Bounded challenge automation remains browser-scoped and does not turn the extension into a desktop-control surface
  - The extension can act on user-opened sites because it needs `<all_urls>` for automation, annotation, DOM capture, and screenshot fallback
  - Restricted pages such as `chrome://`, `chrome-extension://`, and Chrome Web Store pages are not supported targets

• Apr 22, 2026
  permissions

  debugger, alarms, tabs, storage, scripting, activeTab, nativeMessaging

  debugger, webNavigation, alarms, tabs, storage, scripting, activeTab, nativeMessaging

Permissions & access

Permissions

debuggerwebNavigationalarmstabsstoragescriptingactiveTabnativeMessaging

Host access

http://127.0.0.1/*, <all_urls>

Screenshots

Similar extensions

Alternatives to OpenDevBrowser Relay, ranked by description similarity.

OpenClaw Browser Relay

Attach OpenClaw to your existing Chrome tab via a local CDP relay server.

5.0K

★ 2.6

Relay – Intercept, Modify & Run HTTP Requests in Your Browser

Intercept, edit, and run HTTP requests directly in your browser. No account needed.

996

★ 5.0

CheckFlow Browser Relay

Connect your AI agent to Chrome. Automate browsing, extract data, fill forms — 100% local, no cloud. Powered by CheckFlow.

2.0K

★ 2.0

ClawHosters Browser Relay

Connect your ClawHosters OpenClaw instance to your browser tabs for AI-powered browser automation

48

shareq.site

Capture and share HTTP requests from Chrome DevTools

—

dom0

Browser automation for AI agents

43

DOMShell — Browser Filesystem for AI Agents

Browse the web with Linux commands. AI agents use ls, cd, grep, click via MCP. Terminal in Chrome Side Panel.

591

OpenClaw Browser Relay for Windows

Local relay bridge to attach OpenClaw to your existing Chrome tab on Windows.

6.0K

★ 3.0