Retell AI MCP server: voice agent phone calls, agent management, LLMs, and voice discovery
Retell AI is an MCP integration. Retell AI MCP server: voice agent phone calls, agent management, LLMs, and voice discovery.
The published npm package is @mindstone/mcp-server-retell-ai, version 0.3.0. Its declared MCP transport is stdio.
The package declares RETELL_API_KEY (required): Retell AI API key (from retellai.com/dashboard); MCP_WORKSPACE_PATH: Optional workspace directory for local files uploaded as knowledge-base sources. File reads are sandboxed to this directory (defaults to the system temp directory when unset)..
Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.
View the publisher’s registry entry · Project repository. This profile uses version 0.3.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.
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| Variable | Description | Required |
|---|---|---|
| RETELL_API_KEY | Retell AI API key (from retellai.com/dashboard) | Yes |
| MCP_WORKSPACE_PATH | Optional workspace directory for local files uploaded as knowledge-base sources. File reads are sandboxed to this directory (defaults to the system temp directory when unset). | Optional |
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