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pastilhasandClaude Opus 4.6 4d30672adb browser relay: multi-session override, stale session recovery, better error feedback

- relay accepts new extension connections by closing old one (last wins, code 4000)
- extension recognizes code 4000 and stops auto-reconnect (shows "replaced" badge)
- fix ping interval race where old WS close handler killed new connection's pings
- retry CDP commands on "Session with given id not found" by re-attaching debugger
- describeError() maps known errors to user-friendly badge tooltips
- persisted relay tokens restored on server start
- user-scoped token salts, token regeneration/deletion endpoints
- extension download endpoint, integrations UI for browser relay setup
- browser relay env vars passed to pi-bridge sandboxes
- browser screen layout with chat panel and prompt prefix

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-27 15:22:15 +00:00

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name, label, description, language, inputs

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browser

Browser Control

Control connected Chrome browser tabs via the Officer Browser Relay. Use this tool to list tabs, take screenshots, navigate to URLs, evaluate JavaScript, get page info, activate (focus) tabs, or close tabs. Requires the user to have connected the Browser Relay extension in Settings → Integrations.

typescript

action

tab_id

url

expression

type	description
string	Action to perform: list_tabs, screenshot, navigate, evaluate, page_info, activate, close

type	description	optional
string	Target tab ID. Optional — defaults to the first connected tab.	true

type	description	optional
string	URL to navigate to (required for navigate action)	true

type	description	optional
string	JavaScript expression to evaluate in the tab (required for evaluate action)	true

Browser Tool

Control the user's Chrome browser tabs through the Officer Browser Relay and Chrome DevTools Protocol.

Available Actions

list_tabs: List all connected tabs with their title, URL, and ID.
screenshot: Capture a screenshot of a tab. Returns the image directly. Use this when asked about page content.
navigate: Navigate a tab to a URL. Requires url.
evaluate: Run JavaScript in a tab and return the result. Requires expression.
page_info: Get the title and URL of a tab.
activate: Bring a tab to the foreground (focus it).
close: Close a tab.

Tips

When asked about what's on a page, take a screenshot first.
Use evaluate for extracting structured data from pages (DOM queries, reading text content, etc.).
If no tab_id is provided, the first connected tab is used.
Tab IDs can be obtained from list_tabs.

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Browser Tool

Available Actions

Tips

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