How to integrate Customerio MCP with Hermes

GET STARTED FOR FREE
Customerio logo
Hermes logo
divider

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 Customerio 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 Customerio with

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.

Integrating Customerio 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
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Customerio

Ask your agent to connect to Customerio, or simply request any Customerio-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Customerio connection.

Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to Customerio or request any Customerio-related task. It will prompt you to authenticate and authorize access.

5. Done!

What is the Customerio MCP server, and what's possible with it?

The Customerio MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Customer.io account. It provides structured and secure access to your customer engagement workspace, allowing your agent to send targeted communications, manage segments, retrieve messaging analytics, and automate customer data management on your behalf.

  • Targeted message analytics and tracking: Retrieve detailed lists of messages sent, including delivery metrics, to monitor campaign performance and engagement.
  • Segment discovery and membership management: Let your agent fetch all segments, get details for a specific segment, and list all customers in a segment for precise audience targeting.
  • Integration and webhook management: Have your agent list and review all integrations and webhooks in your workspace to streamline system connectivity and reporting.
  • Customer profile suppression: Direct your agent to permanently suppress (delete and block) customer profiles, ensuring compliance and data privacy.
  • Collection metadata retrieval: Retrieve up-to-date details for all collections in your workspace, keeping your AI-powered workflows and automations in sync with your data sources.

Supported Tools & Triggers

Tools
Suppress Customer ProfileTool to suppress a person.
Get IntegrationsTool to retrieve a list of integrations in your workspace.
Get MessagesTool to retrieve a list of messages sent from your workspace.
Get Segment DetailsTool to retrieve details of a specific segment.
Get Segment MembershipTool to retrieve people in a specific segment.
Get SegmentsTool to retrieve a list of segments in your workspace.
Get TriggerTool to retrieve details about a specific trigger.
Get TriggersTool to retrieve a list of triggers for a specific broadcast.
Get Customer.io Workspace WebhooksTool to retrieve a list of webhooks.
List CollectionsTool to list all collections metadata.
List NewslettersTool to list all newsletters.
List SnippetsTool to list all snippets in your workspace.
List Transactional MessagesTool to list all transactional message templates.
Trigger BroadcastTool to manually trigger a broadcast.

Way Forward

With Customerio 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 or check out the Docs for deeper configuration options.

How to build Customerio MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Customerio MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Customerio MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Customerio MCP with Claude Code

Codex logo

Codex

Use Customerio MCP with Codex

OpenClaw logo

OpenClaw

Use Customerio MCP with OpenClaw

CLI logo

CLI

Use Customerio MCP with CLI

Google ADK logo

Google ADK

Use Customerio MCP with Google ADK

LangChain logo

LangChain

Use Customerio MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Customerio MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Customerio MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Customerio MCP with LlamaIndex

CrewAI logo

CrewAI

Use Customerio MCP with CrewAI

FAQ

What are the differences in Tool Router MCP and Customerio MCP?

With a standalone Customerio MCP server, the agents and LLMs can only access a fixed set of Customerio tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Customerio 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 Customerio tools.

Can I manage the permissions and scopes for Customerio while using Tool Router?

Yes, absolutely. You can configure which Customerio 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 Customerio data and credentials are handled as safely as possible.

Used by agents from

Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.

Book a call↗Get started for free