Does Retell handle the telephone lines, or do I need my own Twilio/carrier?

Retell AI is designed to integrate seamlessly into telephony workflows but generally focuses on the conversational agent side. They provide features to list and attach numbers (`list_phone_numbers`), but you often purchase those numbers or link a custom SIP trunk through Retell accounts. You can run `list_phone_numbers` to see your currently available direct lines.

How do I create an outbound call programmatically with my assistant?

Simply ask your assistant to "Call X using my Y agent." Behind the scenes, the AI relies on the `create_phone_call` tool, transmitting a JSON payload supplying the `from_number` (a Retell registered phone number), `to_number` (destination), and an `override_agent_id` parameter to assign your voice agent correctly.

Can the AI initiate voice calls in a web browser instead of over the phone?

Yes. Use the `register_web_call` tool to create a browser-based voice session. This returns a connection URL and access token that your frontend application can use to start a real-time WebRTC conversation with a Retell voice agent, without requiring any phone line.

Retell AI MCP Server

Name: Retell AI
Availability: InStock
Author: Vinkius

retellai.com

Built by Vinkius GDPR ToolsGrátis

Empower your conversational AI to orchestrate, analyze, and automate phone calls or web-based voice agent interactions via Retell.

Vinkius AI Gateway suporta streamable HTTP e SSE.

Funciona com todos os agentes de IA que você já usa

…e qualquer cliente compatível com MCP

Retell AI MCP Server: veja o seu AI Agent em ação

AI Agent→Vinkius→Retell AI

You

Vinkius AI Gateway

GDPR·High Security·Kill Switch·Ultra-Low Latency·Plug and Play

Capacidades integradas (10)

create_agent

Creates a new AI voice agent

create_llm

Configures a Retell-hosted LLM

create_phone_call

Provide a JSON payload with "from_number" and "to_number". Initiates an outbound phone call

get_call_details

Retrieves details for a specific call

list_agents

Lists all configured AI voice agents

list_calls

Lists all historical and active calls

list_phone_numbers

Lists all phone numbers associated with the account

list_voices

Lists all available text-to-speech voices

register_web_call

Registers a new web-based call

update_agent

Updates an existing AI voice agent

O que esse conector desbloqueia

Connect your conversational assistant directly to Retell AI, a powerful platform for building voice-driven conversational agents. Empower your AI to orchestrate, analyze, and automate phone calls or web-based voice interactions seamlessly via simple text commands. From provisioning intelligent voice agents to placing outbound calls to customers, this integration brings the full telecommunication stack directly to your chat interface.

What you can do

Automate Phone Calls — Command your assistant to initiate outbound voice interactions on your behalf (create_phone_call) or register active sessions for web browser integration (register_web_call).
Build and Manage Voice Agents — Dynamically orchestrate AI agent personalities (create_agent, update_agent) and configure their underlying conversational brain (create_llm) with specific system instructions and models.
Analyze Telemetry — Keep track of your infrastructure by querying historical call logs (list_calls), investigating specific conversations for transcripts and sentiment analysis (get_call_details), surveying available text-to-speech voices (list_voices), and reviewing provisioned communication lines (list_phone_numbers and list_agents).

How it works

1. Install the Retell extension module within your MCP environment.
2. Obtain your Retell API Key from your official provider account and securely input it into the designated authentication parameter below.
3. Simply chat with your assistant: "Review all my available voices, create a new AI voice agent configured as a customer support representative, and initiate a test phone call to my personal number."

Who is this for?

Founders & Operators — Spin up autonomous voice-driven receptionists or support bots to interact with inbound or outbound telecommunication traffic efficiently.
Developers & Integrators — Manage Retell AI configurations and rapidly prototype voice applications without using Postman or coding custom administration panels.
Workflow Orchestrators — Chain natural language instructions to dynamically assess previous call transcripts and adjust an active agent's system prompt accordingly.

Perguntas frequentes

Dê aos seus agentes de IA o poder do Retell AI

Acesse o Retell AI e mais de 2.000 servidores MCP — prontos para seus agentes usarem, agora mesmo. Sem código cola. Sem integrações customizadas. Apenas plugue o Vinkius AI Gateway e deixe seus agentes trabalharem.

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