Self-hosted MCP voice agent that places phone calls on your behalf via Retell.
Connect Runs on your machine
claude mcp add callwright -e RETELL_API_KEY=<RETELL_API_KEY> -e MCP_AUTH_TOKEN=<MCP_AUTH_TOKEN> -e PORT=<PORT> -e CALLWRIGHT_DATA_DIR=<CALLWRIGHT_DATA_DIR> -e CALLWRIGHT_PUBLIC_URL=<CALLWRIGHT_PUBLIC_URL> -e CLAUDE_ROUTINE_URL=<CLAUDE_ROUTINE_URL> -e CLAUDE_ROUTINE_TOKEN=<CLAUDE_ROUTINE_TOKEN> -- npx -y [email protected]{
"mcpServers": {
"callwright": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>",
"MCP_AUTH_TOKEN": "<MCP_AUTH_TOKEN>",
"PORT": "<PORT>",
"CALLWRIGHT_DATA_DIR": "<CALLWRIGHT_DATA_DIR>",
"CALLWRIGHT_PUBLIC_URL": "<CALLWRIGHT_PUBLIC_URL>",
"CLAUDE_ROUTINE_URL": "<CLAUDE_ROUTINE_URL>",
"CLAUDE_ROUTINE_TOKEN": "<CLAUDE_ROUTINE_TOKEN>"
}
}
}
}{
"mcpServers": {
"callwright": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>",
"MCP_AUTH_TOKEN": "<MCP_AUTH_TOKEN>",
"PORT": "<PORT>",
"CALLWRIGHT_DATA_DIR": "<CALLWRIGHT_DATA_DIR>",
"CALLWRIGHT_PUBLIC_URL": "<CALLWRIGHT_PUBLIC_URL>",
"CLAUDE_ROUTINE_URL": "<CLAUDE_ROUTINE_URL>",
"CLAUDE_ROUTINE_TOKEN": "<CLAUDE_ROUTINE_TOKEN>"
}
}
}
}{
"servers": {
"callwright": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"RETELL_API_KEY": "<RETELL_API_KEY>",
"MCP_AUTH_TOKEN": "<MCP_AUTH_TOKEN>",
"PORT": "<PORT>",
"CALLWRIGHT_DATA_DIR": "<CALLWRIGHT_DATA_DIR>",
"CALLWRIGHT_PUBLIC_URL": "<CALLWRIGHT_PUBLIC_URL>",
"CLAUDE_ROUTINE_URL": "<CLAUDE_ROUTINE_URL>",
"CLAUDE_ROUTINE_TOKEN": "<CLAUDE_ROUTINE_TOKEN>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
RETELL_API_KEYRequired, secret | Your Retell secret API key (stays server-side) |
MCP_AUTH_TOKENOptional, secret | Bearer token clients must send; required when exposed beyond localhost |
PORTOptional | Port the HTTP MCP server listens on (default 8787) |
CALLWRIGHT_DATA_DIROptional | Persistent directory for runtime state such as trigger deduplication |
CALLWRIGHT_PUBLIC_URLOptional | Public Callwright base URL used to configure Retell webhook delivery |
CLAUDE_ROUTINE_URLOptional | Optional complete Claude cloud Routine /fire endpoint URL |
CLAUDE_ROUTINE_TOKENOptional, secret | Optional dedicated bearer token for the configured Claude Routine trigger |
Details
| Package | [email protected] (NPM, streamable-http) |
| First published | 12 Jul 2026 |
| Last updated | 12 Jul 2026 |
| Registry name | com.topness/callwright |
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