Home / Servers / ElevenLabs API / register_twilio_call

Register A Twilio Call And Return Twiml

An MCP tool from the ElevenLabs API server, hosted on mcp.hjlabs.in.

Name on the gateway: elevenlabs_api__register_twilio_call · may change things.

Parameters

Name	Type	Description
`agent_id` required	`string`	Agent Id
`from_number` required	`string`	From Number
`to_number` required	`string`	To Number
`direction`	`inbound \| outbound`	TelephonyDirection
`conversation_initiation_client_data`	`object`	ConversationInitiationClientDataRequest

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "elevenlabs_api__register_twilio_call",
  "arguments": {
    "agent_id": "…",
    "from_number": "…",
    "to_number": "…"
  }
}

Or connect the ElevenLabs API server directly, which lists 487 tools including this one:

Run in your terminal

claude mcp add --transport http hj-elevenlabs-api https://mcp.hjlabs.in/mcp/elevenlabs-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the register a twilio call and return twiml tool with agent_id set to ….