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Voiceflow only supports hosted MCP servers that are accessible from the internet. Locally run MCP servers are not supported. You can use a service like Zapier MCP to build a hosted MCP server.
MCP tool MCP (Model Context Protocol) is a standardized way for AI agents to connect to external services. Unlike traditional APIs, MCP provides context to help your agent understand how and when to use each tool. The MCP tool lets you connect to any hosted MCP server and use its tools directly from your agent.

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Creating a new MCP tool

Create a new MCP tool from Tools → New tool → MCP, or click MCP → Create MCP tool directly from a Playbook’s tool panel. You’ll need to provide:
  • Server name: A friendly name for your MCP server displayed inside Voiceflow.
  • Server URL: The root URL of your hosted MCP server.
  • Headers: Optional key-value pairs for authentication, such as API keys or auth tokens.
  • Image: Optionally add an icon that’ll be shown next to the tool inside Playbooks.
Once connected, Voiceflow will fetch the available tools from your server and display them in a list. You can then choose which tools from the MCP server that you’d like to add to your agent.