> ## Documentation Index
> Fetch the complete documentation index at: https://docs.viorant.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting

> Fixes for common issues with the Viorant Hub.

<AccordionGroup>
  <Accordion title="Sign-in didn't return to the Hub">
    Sign-in completes in your browser and hands back to the app. If your browser asks
    whether to open Viorant, allow it. If nothing happens, return to the Hub and try
    **Sign in with Google** again.
  </Accordion>

  <Accordion title="A model is greyed out / “add your key”">
    Your [credit balance](/providers/credits) has reached zero, so the Viorant managed
    tiers stop. Add your own provider key in the [Model Master](/providers/byok) to keep
    running — your own key costs no credits. Check the balance under
    **profile menu → Usage**.
  </Accordion>

  <Accordion title="A connector's tools aren't showing up">
    Re-authorize the connector — its access may have expired. You can re-authorize,
    disable, or remove a connector from the Connectors surface.
  </Accordion>

  <Accordion title="Web search isn't working / web_search is disabled">
    `web_search` needs a **Tavily API key**. Open **Viorant Tools** on the Connectors
    surface and save your key in the **Tool keys** panel — the `web_search` toggle stays
    disabled until a valid key is saved. See
    [Built-in tools](/connectors/built-in-tools). Also confirm `web_search` is in the
    skill or agent's allowed tools.
  </Accordion>

  <Accordion title="An agent run failed to start">
    Make sure the agent has a [model](/masters/model) selected, and either a valid
    provider key or a [credit balance](/providers/credits) if it's on a Viorant tier.
    Re-run and check the streamed trace for the first error.
  </Accordion>
</AccordionGroup>

<Note>
  This page grows as common questions come in. Hit a snag that isn't here? Let us
  know via the [website](https://viorant.ai).
</Note>