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If you have added tools to your Zapier MCP server but they do not appear in your MCP client, it may be using a cached tool list, or the tools may not be configured correctly. This article covers how to refresh the tool list and verify your setup.

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Symptom

You added tools to your MCP server, but they do not appear in your MCP client.

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Causes

  • Your MCP client cached an older tool list and needs a manual refresh.
  • The tools are not configured correctly on your server.
  • An app connection has expired.
  • The MCP client was removed from the server, which signs it out.
  • Your server URL or connection token is incorrect in your MCP client’s configuration.

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How to fix it

1

Refresh your MCP client's tool list

Some MCP clients cache the tool list and need a manual refresh:
  • ChatGPT: Go to Connector Settings, select your Zapier connector, and select Refresh.
  • Claude Desktop: Restart the application. Claude also refreshes automatically within a few hours, but do not wait for that. Restart it so your tool list is current immediately.
  • Cursor or VS Code: Reload the window or restart the editor.
  • Slack: Press ⌘R on Mac or Ctrl+R on Windows. Slackbot can cache its tool list for up to 24 hours, so if a new tool is still missing, clear Slack’s cache and restart.
  • Other clients: Check the client’s documentation for how to refresh the MCP tool list.
2

Check tool configuration

Go to the Zapier MCP dashboard and select the server your MCP client is connected to.
  • Managed mode: Confirm the tools appear on the navApps Apps tab and are enabled.
  • Agentic mode: Tools are discovered dynamically. Check the navApps Apps tab for any warning icons on app connections rather than checking for individual tools.
3

Check your app connection

If a tool shows an alert icon alertCircleFill beside its name, select the menu icon navMoreHoriz beside the app name and select Update authentication to fix the connection.
4

Verify your connection details

For OAuth MCP clients, disconnect and reconnect using the Clients tab. For unlisted MCP clients using a connection token, confirm the server URL in your MCP client matches the one shown on the settings icon Settings tab in the Zapier MCP dashboard.If you removed an MCP client from your server, Zapier signs it out. The MCP client has to go through the Zapier sign-in again to reconnect. It does not reconnect on its own.

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Last modified on October 20, 2026