Retell AI MCP server: voice agent phone calls, agent management, LLMs, and voice discovery
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add retell-ai --env RETELL_API_KEY='<RETELL_API_KEY>' -- npx -y @mindstone/mcp-server-retell-ai~/.codex/config.toml
[mcp_servers.retell-ai]
command = "npx"
args = ["-y", "@mindstone/mcp-server-retell-ai"]
env = { RETELL_API_KEY = "<RETELL_API_KEY>" }
# codex mcp add retell-ai --env RETELL_API_KEY='<RETELL_API_KEY>' -- npx -y @mindstone/mcp-server-retell-ai~/.cursor/mcp.json
{
"mcpServers": {
"retell-ai": {
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-retell-ai"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"retell-ai": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-retell-ai"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"retell-ai": {
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-retell-ai"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"retell-ai": {
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-retell-ai"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"retell-ai": {
"command": "npx",
"args": [
"-y",
"@mindstone/mcp-server-retell-ai"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>"
}
}
}
}Environment variables
RETELL_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.