# How to integrate Retellai MCP with Hermes ```json { "title": "How to integrate Retellai MCP with Hermes", "toolkit": "Retellai", "toolkit_slug": "retellai", "framework": "Hermes", "framework_slug": "hermes-agent", "url": "https://composio.dev/toolkits/retellai/framework/hermes-agent", "markdown_url": "https://composio.dev/toolkits/retellai/framework/hermes-agent.md", "updated_at": "2026-05-06T08:26:05.345Z" } ``` ## Introduction Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows. This guide explains the easiest and most robust way to connect your Retellai account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either. ## Also integrate Retellai with - [OpenAI Agents SDK](https://composio.dev/toolkits/retellai/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/retellai/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/retellai/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/retellai/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/retellai/framework/codex) - [OpenClaw](https://composio.dev/toolkits/retellai/framework/openclaw) - [CLI](https://composio.dev/toolkits/retellai/framework/cli) - [Google ADK](https://composio.dev/toolkits/retellai/framework/google-adk) - [LangChain](https://composio.dev/toolkits/retellai/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/retellai/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/retellai/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/retellai/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/retellai/framework/crew-ai) ## TL;DR ### What is Composio Connect? Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can: - Search and load tools from relevant toolkits on-demand, reducing context usage. - Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM. - Manage app authentication end-to-end with zero manual overhead. ## Connect Retellai to Hermes ### Integrating Retellai with Hermes ### Using Composio Connect CLI 1. Install the Composio CLI Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you. ```bash curl -fsSL https://composio.dev/install | bash ``` ## What is the Retellai MCP server, and what's possible with it? The Retellai MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Retellai account. It provides structured and secure access to your call records, phone numbers, and conversation transcripts, so your agent can perform actions like retrieving call details, managing phone numbers, initiating outbound calls, and analyzing voice data on your behalf. - Retrieve and analyze call records: Your agent can fetch detailed call logs, filter by agent or time, and surface insights from past conversations. - Initiate outbound and web-based calls: Easily direct your agent to start new phone or web calls between specific numbers or agents, supporting various business workflows. - Manage phone numbers and assignments: Buy, update, or delete phone numbers, and bind them to agents for streamlined inbound and outbound call handling. - Access and review call transcripts and details: Let your agent drill down into specific calls, pulling transcripts and metadata for compliance, training, or analytics. - Explore and configure voice settings: Fetch detailed information about available voice options, including provider, accent, gender, and preview audio for customization of call experiences. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `RETELLAI_BUY_A_NEW_PHONE_NUMBER_BIND_AGENTS` | Buy a new phone number bind agents | This endpoint allows purchasing a new phone number with a specified area code and binding it to designated agents for inbound and outbound calls. it requires json with agent ids and area code. responses indicate the creation status or errors. | | `RETELLAI_CREATE_A_NEW_OUTBOUND_PHONE_CALL` | Create a new outbound phone call | Initiate an outbound call by post to '/v2/create-phone-call'. requires 'from number' and 'to number' in e.164 format. optional overrides and metadata supported. on success, returns call details including type, status, and ids. | | `RETELLAI_CREATE_A_NEW_WEB_CALL` | Create a new web call | The /v2/create-web-call endpoint creates a web call with a unique agent id, returning call details like type, token, call id, and status in json format, with a 201 response. optional metadata and variables can be included. | | `RETELLAI_DELETE_PHONE_NUMBER` | Delete phone number | Deletes an existing phone number identified by its e.164 format. | | `RETELLAI_LIST_ALL_PHONE_NUMBERS` | List all phone numbers | Retrieves a list of all phone numbers associated with the account. | | `RETELLAI_RETRIEVE_CALL_DETAILS` | Retrieve call details | The /v2/list-calls endpoint retrieves call records with filters (agent id, timestamps), offers sorting, pagination, and handles different responses (success, bad request, unauthorized, server error) in json format. | | `RETELLAI_RETRIEVE_CALL_DETAILS_BY_ID` | Retrieve call details by id | Retrieve call details by id for web/phone calls, including type, agent id, status, timestamps, and web access token; covering responses from success to server errors. | | `RETELLAI_RETRIEVE_DETAILS_OF_A_SPECIFIC_PHONE_NUMBER` | Retrieve details of a specific phone number | Fetches the details of a given phone number in e.164 format. | | `RETELLAI_RETRIEVE_DETAILS_OF_A_SPECIFIC_VOICE` | Retrieve details of a specific voice | "access specific voice details including its name, provider, accent, gender, and a preview audio url using the unique voice id. parameters required." | | `RETELLAI_UPDATE_PHONE_NUMBER` | Update phone number | Updates the agent bound to a purchased phone number. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Retellai MCP server provides comprehensive access to Retellai operations through Composio. Once connected, Hermes can perform all major Retellai actions on your behalf using natural language commands. ## Complete Code None listed. ## Conclusion ### Way Forward With Retellai connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to. From here, you can extend Hermes further: - Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you. - Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft. - Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt. If you run into trouble or want to share what you've built, join the [community](https://discord.com/invite/composio) or check out the [Docs](https://docs.composio.dev?utm_source=toolkits&utm_medium=framework_template&utm_campaign=hermes&utm_content=docs) for deeper configuration options. ## How to build Retellai MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/retellai/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/retellai/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/retellai/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/retellai/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/retellai/framework/codex) - [OpenClaw](https://composio.dev/toolkits/retellai/framework/openclaw) - [CLI](https://composio.dev/toolkits/retellai/framework/cli) - [Google ADK](https://composio.dev/toolkits/retellai/framework/google-adk) - [LangChain](https://composio.dev/toolkits/retellai/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/retellai/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/retellai/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/retellai/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/retellai/framework/crew-ai) ## Related Toolkits - [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable. - [Outlook](https://composio.dev/toolkits/outlook) - Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management. - [Slack](https://composio.dev/toolkits/slack) - Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place. - [Gong](https://composio.dev/toolkits/gong) - Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action. - [Microsoft teams](https://composio.dev/toolkits/microsoft_teams) - Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication. - [Slackbot](https://composio.dev/toolkits/slackbot) - Slackbot is a conversational automation tool for Slack that handles reminders, notifications, and automated responses. It boosts team productivity by streamlining onboarding, answering FAQs, and managing timely alerts—all right inside Slack. - [2chat](https://composio.dev/toolkits/_2chat) - 2chat is an API platform for WhatsApp and multichannel text messaging. It streamlines chat automation, group management, and real-time messaging for developers. - [Agent mail](https://composio.dev/toolkits/agent_mail) - Agent mail provides AI agents with dedicated email inboxes for sending, receiving, and managing emails. It empowers agents to communicate autonomously with people, services, and other agents—no human intervention needed. - [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place. - [Chatwork](https://composio.dev/toolkits/chatwork) - Chatwork is a team communication platform with group chats, file sharing, and task management. It helps businesses boost collaboration and streamline productivity. - [Clickmeeting](https://composio.dev/toolkits/clickmeeting) - ClickMeeting is a cloud-based platform for running online meetings and webinars. It helps businesses and individuals host, manage, and engage virtual audiences with ease. - [Confluence](https://composio.dev/toolkits/confluence) - Confluence is Atlassian's team collaboration and knowledge management platform. It helps your team organize, share, and update documents and project content in one secure workspace. - [Dailybot](https://composio.dev/toolkits/dailybot) - DailyBot streamlines team collaboration with chat-based standups, reminders, and polls. It keeps work flowing smoothly in your favorite messaging platforms. - [Dialmycalls](https://composio.dev/toolkits/dialmycalls) - Dialmycalls is a mass notification service for sending voice and text messages to contacts. It helps teams and organizations quickly broadcast urgent alerts and updates. - [Dialpad](https://composio.dev/toolkits/dialpad) - Dialpad is a cloud-based business phone and contact center system for teams. It unifies voice, video, messaging, and meetings across your devices. - [Discord](https://composio.dev/toolkits/discord) - Discord is a real-time messaging and VoIP platform for communities and teams. It lets users chat, share media, and collaborate across public and private channels. - [Discordbot](https://composio.dev/toolkits/discordbot) - Discordbot is an automation tool for Discord servers that handles moderation, messaging, and user engagement. It helps communities run smoothly by automating routine and complex tasks. - [Echtpost](https://composio.dev/toolkits/echtpost) - Echtpost is a secure digital communication platform for encrypted document and message exchange. It ensures confidential data stays private and protected during transmission. - [Egnyte](https://composio.dev/toolkits/egnyte) - Egnyte is a cloud-based platform for secure file sharing, storage, and governance. It helps teams collaborate efficiently while maintaining data compliance and security. - [Google Meet](https://composio.dev/toolkits/googlemeet) - Google Meet is a secure video conferencing platform for virtual meetings, chat, and screen sharing. It helps teams connect, collaborate, and communicate seamlessly from anywhere. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Retellai MCP? With a standalone Retellai MCP server, the agents and LLMs can only access a fixed set of Retellai tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Retellai and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Hermes? Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Retellai tools. ### Can I manage the permissions and scopes for Retellai while using Tool Router? Yes, absolutely. You can configure which Retellai scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do. ### How safe is my data with Composio Tool Router? All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Retellai data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)