musistudio/claude-code-router · error · Error

browser_chrome_login_import requires domains or an active ht

Error message

browser_chrome_login_import requires domains or an active http(s) tab.

What it means

Thrown by the domain-resolution helper for browser_chrome_login_import when the caller supplies no domains argument and the fallback — deriving a domain from the specified tab or the active tab's URL — cannot yield an http(s) domain. The import needs at least one target domain, either explicit or inferred from a web page.

Source

Thrown at packages/electron/src/main/browser-automation-mcp.ts:1463

    windowId: builtInBrowserService.getAutomationWindowId()
  };
}

function resolveChromeLoginImportDomains(args: Record<string, unknown>, fallbackTabId?: string): string[] {
  const explicit = uniqueStrings([
    ...readStringArray(args.domains),
    ...(readString(args.domain) ? [readString(args.domain) as string] : [])
  ].map(normalizeChromeLoginImportDomain).filter((domain): domain is string => Boolean(domain)));
  if (explicit.length > 0) {
    return explicit;
  }

  const state = builtInBrowserService.getAutomationState();
  const tabId = readString(args.tabId) || fallbackTabId || state.activeTabId;
  const tab = state.tabs.find((candidate) => candidate.id === tabId) || state.tabs.find((candidate) => candidate.id === state.activeTabId);
  const domain = normalizeChromeLoginImportDomain(tab?.url);
  if (!domain) {
    throw new Error("browser_chrome_login_import requires domains or an active http(s) tab.");
  }
  return [domain];
}

function normalizeChromeLoginImportDomain(value: unknown): string | undefined {
  const raw = readString(value)?.toLowerCase();
  if (!raw) {
    return undefined;
  }
  try {
    const url = new URL(raw.includes("://") ? raw : `https://${raw}`);
    return url.hostname.replace(/^\*\./, "").replace(/^\./, "");
  } catch {
    const domain = raw.replace(/^\*\./, "").replace(/^\./, "").split("/")[0];
    return domain && !domain.includes(" ") ? domain : undefined;
  }
}

View on GitHub (pinned to 99f24806c6)

Solutions

1. Pass an explicit domains array, e.g. { domains: ["example.com"] }.
2. Or navigate a tab to the target site first so the active tab's URL yields a domain.
3. Ensure domains values are plain hostname strings (scheme/path stripped) as the helper expects.

Example fix

// before
await call("browser_chrome_login_import", {}); // active tab is about:blank

// after
await call("browser_chrome_login_import", { domains: ["example.com"] });

const domains = args.domains?.length ? args.domains : inferActiveHttpDomain(await call("browser_tab_list", {}));
if (!domains?.length) throw new Error("No domains available — navigate to the target site first");
await call("browser_chrome_login_import", { ...args, domains });

function hasDomains(a: unknown): a is { domains: string[] } { return Array.isArray((a as any)?.domains) && (a as any).domains.length > 0; }

try { await call("browser_chrome_login_import", args); } catch (e) { if (e instanceof Error && e.message.includes("requires domains or an active http(s) tab")) { await call("browser_chrome_login_import", { ...args, domains: ["example.com"] }); } else throw e; }

When it happens

Trigger: Calling browser_chrome_login_import with neither args.domains nor args.tabId while the active tab is blank, on a chrome:// page, or has no http(s) URL (normalizeChromeLoginImportDomain returns undefined).

Common situations: Running the import right after opening the browser with no page loaded; the active tab is the default new-tab page; passing domains in the wrong shape so they read as empty.

Understand the failure class

Background: Missing required parameter errors: what 'X is required' and 'the required X param is missing' mean, and how to fix them — this error's family across 27 libraries.

Related errors

• browser_tab_activate requires tabId or session.
• browser_tab_close requires tabId or session.
• Chrome login import job was not found: ${jobId}
• A valid browser automation session is required.
• browser_navigate could not resolve an active tab.

AI-assisted analysis of musistudio/claude-code-router@99f24806c6 (2026-08-27). Data as JSON: /api/errors/63abd5f588c26deb. Report an issue: GitHub.