Refresh BYOB browser inventory

Poll connected A0 CLI host-browser metadata while Browser Settings is open so newly authorized endpoints appear without saving or reopening.

Extend Browser Settings labels and remote-debugging guidance for Brave, Opera, Vivaldi, and Chromium-family host browsers with regression coverage.

plugins/_browser/AGENTS.md

@@ -25,6 +25,7 @@
 - Keep WebUI Browser tabs scoped to the active chat context by default; aggregate tabs from other AgentContext runtimes only when the Browser settings tab scope is `shared`.
 - Keep narrow WebUI Browser controls usable by grouping navigation with Annotate/settings above a full-width address bar.
 - For Bring Your Own Browser with an existing host profile, `host_browser_selection` may target automatic CLI selection, a browser family/id, or an explicit CDP endpoint and must be forwarded to the connector runtime as `browser_selection`.
+- Browser Settings must refresh connected A0 CLI host-browser inventory while the settings view is open so newly authorized endpoints appear without saving or reopening.
 - Browser URL-intent handling must only claim web URL schemes and leave custom Agent Zero schemes to their owning surfaces.
 - Prefer DOM/CDP browser actions with refs, selectors, frame-chain refs, and screenshots over viewport coordinate input. Coordinates remain a visual fallback.
 - Do not hardcode user-specific browser paths or secrets.

plugins/_browser/helpers/connector_runtime.py

@@ -83,7 +83,8 @@ _REQUIRED_API_NAMES_RE = re.compile(
     re.S,
 )
 _HOST_BROWSER_REMOTE_DEBUGGING_HELP = (
-    'For an already-open Chrome-family browser, open `chrome://inspect/#remote-debugging`, '
+    "For an already-open Chromium-family browser, open its inspect page, such as "
+    "`chrome://inspect/#remote-debugging` or `opera://inspect/#remote-debugging`, "
     'enable "Allow remote debugging for this browser instance", run `/browser host on`, '
     "and retry."
 )
@@ -519,7 +520,10 @@ class ConnectorBrowserRuntime:
         if not message:
             message = "Host browser operation failed"
         normalized = message.lower()
-        if "chrome://inspect/#remote-debugging" in normalized:
+        if (
+            "chrome://inspect/#remote-debugging" in normalized
+            or "opera://inspect/#remote-debugging" in normalized
+        ):
             return _append_docker_browser_recovery(message)
         if any(token in normalized for token in _REMOTE_DEBUGGING_ERROR_TOKENS):
             return _append_docker_browser_recovery(

plugins/_browser/prompts/agent.system.tool.browser.md

@@ -3,7 +3,7 @@ Rendered browser automation for pages that need interaction, JavaScript, forms,
 
 Prefer `search_engine` or `document_query` for plain text research. The tool must not open a Browser surface automatically. Use the tool headlessly unless the user opens the Browser surface or asks for the optional visible WebUI viewer.
 
-When the user asks for "my browser", "host browser", "local browser", local Chrome, or opening a URL in their host browser, use this `browser` tool. Do not substitute `computer_use_remote`, `code_execution_remote`, `xdg-open`, `sensible-browser`, or Python `webbrowser.open`. If setup fails and mentions remote debugging, tell the user to open `chrome://inspect/#remote-debugging`, enable "Allow remote debugging for this browser instance", run `/browser host on`, and retry.
+When the user asks for "my browser", "host browser", "local browser", a local Chromium browser, or opening a URL in their host browser, use this `browser` tool. Do not substitute `computer_use_remote`, `code_execution_remote`, `xdg-open`, `sensible-browser`, or Python `webbrowser.open`. If setup fails and mentions remote debugging, tell the user to open the browser inspect page, such as `chrome://inspect/#remote-debugging` or `opera://inspect/#remote-debugging`, enable "Allow remote debugging for this browser instance", run `/browser host on`, and retry.
 
 For rendered browsing workflows, multi-step interaction, screenshots, downloads, uploads, forms, or host/container mode decisions, first load `browser-automation` with `skills_tool:load`, then call this tool using the loaded instructions. For fragile forms, `browser-automation` links to `browser-form-workflows`; load it when selects, checkboxes, radios, uploads, contenteditable fields, validation, or submission state are central.
 

plugins/_browser/webui/browser-config-store.js

@@ -10,6 +10,7 @@ const HOST_PROFILE_MODES = new Set(["existing", "agent"]);
 const DEFAULT_MAX_OPEN_TABS = 32;
 const MIN_MAX_OPEN_TABS = 1;
 const HARD_MAX_OPEN_TABS = 50;
+const HOST_BROWSER_STATUS_REFRESH_MS = 3000;
 
 function normalizePathList(value) {
   const source = Array.isArray(value)
@@ -91,6 +92,9 @@ function hostBrowserFamilyLabel(value) {
     chromium: "Chromium",
     edge: "Edge",
     "edge-dev": "Edge Dev",
+    brave: "Brave",
+    opera: "Opera",
+    vivaldi: "Vivaldi",
   };
   const label = labels[base] || "Host browser";
   if (remoteDebugging) return `${label} (allowed)`;
@@ -116,13 +120,16 @@ export const store = createStore("browserConfig", {
   extensionDeleteLoadingPath: "",
   hostBrowserStatus: null,
   hostBrowserStatusLoading: false,
+  hostBrowserStatusRefreshTimer: null,
 
   async init(config) {
     this.bindConfig(config);
     await Promise.all([this.loadExtensionsList(), this.loadHostBrowserStatus()]);
+    this.startHostBrowserStatusRefresh();
   },
 
   cleanup() {
+    this.stopHostBrowserStatusRefresh();
     this.config = null;
     this.extensionsList = [];
     this.extensionsError = "";
@@ -132,6 +139,20 @@ export const store = createStore("browserConfig", {
     this.hostBrowserStatusLoading = false;
   },
 
+  startHostBrowserStatusRefresh() {
+    this.stopHostBrowserStatusRefresh();
+    this.hostBrowserStatusRefreshTimer = window.setInterval(
+      () => this.loadHostBrowserStatus(),
+      HOST_BROWSER_STATUS_REFRESH_MS,
+    );
+  },
+
+  stopHostBrowserStatusRefresh() {
+    if (!this.hostBrowserStatusRefreshTimer) return;
+    window.clearInterval(this.hostBrowserStatusRefreshTimer);
+    this.hostBrowserStatusRefreshTimer = null;
+  },
+
   bindConfig(config) {
     const safeConfig = ensureConfig(config);
     if (!safeConfig) return;

plugins/_browser/webui/config.html

@@ -37,7 +37,7 @@
               class="browser-config-field-help"
               x-show="$store.browserConfig.config.runtime_backend === 'host_required'"
             >
-              Uses Chrome, Edge, or Chromium on the A0 CLI host. Keep A0 CLI connected; the browser opens when the agent first needs it. For an already-open browser, use chrome://inspect/#remote-debugging and enable "Allow remote debugging for this browser instance".
+              Uses Chrome, Edge, Brave, Opera, Vivaldi, or Chromium on the A0 CLI host. Keep A0 CLI connected; the browser opens when the agent first needs it. For an already-open browser, use its inspect page, such as chrome://inspect/#remote-debugging or opera://inspect/#remote-debugging, and enable "Allow remote debugging for this browser instance".
             </span>
           </label>
 

tests/test_a0_connector_prompt_gating.py

@@ -624,6 +624,7 @@ def test_host_browser_requests_route_to_browser_tool_not_desktop_or_shell_fallba
     assert "code_execution_remote" in browser_prompt
     assert "Python `webbrowser.open`" in browser_prompt
     assert "chrome://inspect/#remote-debugging" in browser_prompt
+    assert "opera://inspect/#remote-debugging" in browser_prompt
     assert "Do not start `computer_use_remote` for web-page navigation" in computer_skill
     assert (
         "Do not fall back to `code_execution_remote`, `xdg-open`, `sensible-browser`, "

tests/test_browser_agent_regressions.py

@@ -995,10 +995,12 @@ def test_browser_tool_does_not_auto_open_canvas_policy_is_documented():
     assert "`browser-automation` links to `browser-form-workflows`" in prompt
     assert "does not automatically load screenshots" in prompt
     assert "chrome://inspect/#remote-debugging" in prompt
+    assert "opera://inspect/#remote-debugging" in prompt
     assert tokens.approximate_tokens(prompt) <= 650
     assert "already open" in config
     assert "already-open Browser surface" in config_html
     assert "chrome://inspect/#remote-debugging" in config_html
+    assert "opera://inspect/#remote-debugging" in config_html
 
 
 def test_browser_skills_are_plugin_owned_and_progressively_linked():

tests/test_host_browser_connector.py

@@ -308,6 +308,7 @@ def test_connector_runtime_adds_remote_debugging_help_to_cdp_errors():
     )
 
     assert "chrome://inspect/#remote-debugging" in message
+    assert "opera://inspect/#remote-debugging" in message
     assert "Allow remote debugging for this browser instance" in message
     assert "/browser host on" in message
     assert "Internal Docker browser" in message