twilio-mcp
Simple MCP server for sending SMS via Twilio. Pure TypeScript, no build step.
Why this exists: The official Twilio MCP has a bug that causes invalid tool schemas, making it unusable with Claude. This is a minimal alternative that just works.
Usage
npx tsx src/index.ts --account-sid <sid> --auth-token <token> --messaging-service-sid <sid> [--default-to <number>]
Arguments
--account-sid- Twilio Account SID (required)--auth-token- Twilio Auth Token (required)--messaging-service-sid- Twilio Messaging Service SID (required)--default-to- Default recipient phone number (optional)
Claude Code Configuration
Add to ~/.claude/settings.json:
{
"mcpServers": {
"twilio": {
"command": "npx",
"args": [
"tsx",
"/path/to/twilio-mcp/src/index.ts",
"--account-sid", "YOUR_ACCOUNT_SID",
"--auth-token", "YOUR_AUTH_TOKEN",
"--messaging-service-sid", "YOUR_MESSAGING_SERVICE_SID",
"--default-to", "+1987654321"
]
}
}
}
Tools
send_text
Send an SMS message.
Parameters:
to(optional if--default-tois set) - Recipient phone number in E.164 formatmessage(required) - The text message to send