Mirror the v1.8.3 extension bridge fix on the python side. The MCP
'browser' tool now exposes:
- tab_id — accepts the targetId returned by 'tabs' (e.g. "tab-1888868904")
or a numeric tab id. Forwards as tabId so every action operates on the
specified tab instead of the OS-active tab. Critical when the user has
many windows open and the wrong one is in focus.
- client_id — pin to a specific connected extension instance (returned
in 'status'). Use with 'list_browsers' to address one Chrome instance
vs another Firefox instance bridged to the same hanzo bridge.
- target_browser — 'chrome' | 'firefox' per call. Per-call override of
the global backend so a single MCP session can address Chrome and
Firefox at different moments.
Also expose two action names that the bridge already supports:
select_tab — bring a specific tab to focus (Target.activateTarget)
list_browsers — enumerate every connected provider with details
The "tab-NNN" prefix from getTargets is automatically stripped and the
numeric id forwarded; the bridge's parseTabId() handles both formats.
Tested against extension v1.8.3 which lands the matching bridge changes.
zeekay
9df3941de5