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

# McpAuthorizationError

> Fix the McpAuthorizationError when connecting Zapier MCP to your AI client.

The `McpAuthorizationError` message means Zapier could not verify the sign-in for your AI client. This usually means an app connection on your server has expired and needs to be reauthenticated.

## Symptom

Your AI client shows the error `McpAuthorizationError` when trying to connect to Zapier MCP.

## Causes

* An app connection on the server has expired or been revoked.
* The connection token saved in your AI client is out of date.

## How to fix it

First, try reconnecting the app that is failing:

<Steps>
  <Step title="Open your server">
    In the left sidebar of the [Zapier MCP dashboard](https://mcp.zapier.com/), select your server.
  </Step>

  <Step title="Select the app menu">
    Select the **menu icon** beside the name of the app.
  </Step>

  <Step title="Reauthenticate">
    Select **Update authentication** and follow the prompts to reconnect.
  </Step>

  <Step title="Test again">
    Try the action in your AI client again.
  </Step>
</Steps>

If the error persists and you are using an unlisted client with a connection token, rotate the token and update your AI client's configuration:

<Steps>
  <Step title="Open your server">
    Go to the [Zapier MCP dashboard](https://mcp.zapier.com/) and select your server.
  </Step>

  <Step title="Go to the Connect tab">
    In the top menu bar, select the **Connect** tab.
  </Step>

  <Step title="Rotate your token">
    Select **Rotate token** to generate a new connection token.
  </Step>

  <Step title="Update your client">
    Copy the new server URL and update it in your AI client's configuration.
  </Step>

  <Step title="Restart and test">
    Restart your AI client and try connecting again.
  </Step>
</Steps>

<Info>
  If you are using the TypeScript or Python SDK with an API key, this error can occur if the key is revoked. Generate a new API key from the [Zapier MCP dashboard](https://mcp.zapier.com/) and update it in your SDK configuration.
</Info>

## Still need help?

* [Ask in the Zapier Community](https://community.zapier.com/) for advice from experienced Zapier users.
* [Contact the Zapier MCP team](https://mcp.zapier.app/home) for feedback or help.