KosmoKrator

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Retell AI MCP Gateway for AI Agents

Expose Retell AI tools to Claude Code, Cursor, Codex, and other MCP clients through the local KosmoKrator MCP gateway.

6 functions 4 read 2 write API key auth
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Retell AI MCP Gateway

Expose Retell AI to MCP clients with `kosmokrator mcp:serve --integration=retell-ai`.

If the client has never used KosmoKrator before, install it first, then register this integration as a stdio MCP server. The gateway exposes only the selected integration in the example below. 

curl -fsSL https://raw.githubusercontent.com/OpenCompanyApp/kosmokrator/main/install.sh | bash
kosmokrator mcp:gateway:install --integration=retell-ai --write=deny --json
{
  "mcpServers": {
    "kosmokrator-retell-ai": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=retell-ai",
        "--write=deny"
      ]
    }
  }
}

Serve Manually

kosmokrator mcp:serve --integration=retell-ai --write=deny

MCP Tool Names

KosmoKrator exposes integration tools through the gateway with stable names:

MCP toolSource functionType
integration__retell_ai__retell_ai_create_call retell-ai.retell_ai_create_call Write write
integration__retell_ai__retell_ai_get_call retell-ai.retell_ai_get_call Read read
integration__retell_ai__retell_ai_list_calls retell-ai.retell_ai_list_calls Read read
integration__retell_ai__retell_ai_list_agents retell-ai.retell_ai_list_agents Read read
integration__retell_ai__retell_ai_create_agent retell-ai.retell_ai_create_agent Write write
integration__retell_ai__retell_ai_get_current_user retell-ai.retell_ai_get_current_user Read read

Write Access

Start with --write=deny for read-only MCP clients. Use --write=ask or --write=allow only when the client and workspace are trusted.