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Troubleshooting

"Failed to reach cloud catalog"​

The catalog of available apps is fetched live, so your CrabShack instance needs a working internet connection to browse it. If you see this message on the Integrations page:

  1. Confirm your CrabShack instance has internet access.
  2. Wait a moment and reload the page — this is usually temporary.
  3. Already-installed connections keep working even while the catalog is unreachable; this only affects browsing and installing new apps.

The sign-in popup never appears​

Some apps connect via a browser popup. If clicking Connect does nothing:

  • Check whether your browser blocked the popup (look for a blocked-popup icon in the address bar) and allow it for your CrabShack instance.
  • Make sure you saved your connection credentials first — the Connect button stays disabled until you do.

An agent can't use a connection I just installed​

  • If it's an agent other than your main one, check that connection's box in that agent's Allowed MCPs settings — see Agent Allowlisting.
  • Confirm the connection shows as Connected, not just installed — an app that's installed but not yet connected isn't usable by any agent.

A connection needs re-authenticating​

Sign-ins can expire. On that app's detail page, use Reconnect to go through sign-in again — your other settings for that connection are kept.

Uninstalling a connection​

Uninstalling stops the connection completely and removes its saved credentials — this can't be undone. Any agent using it will lose access immediately. If you just want to temporarily stop an agent from using a connection, remove it from that agent's Allowed MCPs instead of uninstalling it.