How to integrate Postalytics MCP with Hermes

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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 Postalytics 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 Postalytics 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 Postalytics 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 Postalytics

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

4. Done. You're all set with a new Postalytics 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 Postalytics or request any Postalytics-related task. It will prompt you to authenticate and authorize access.

5. Done!

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

The Postalytics MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Postalytics account. It provides structured and secure access so your agent can perform Postalytics operations on your behalf.

Supported Tools & Triggers

Tools
Add AccountTool to create a new sub-account in the Postalytics system.
Add ContactTool to add a contact to a specified contact list with their information.
Create New CampaignTool to create a new direct mail campaign in Postalytics.
Create Suppression ListTool to create a new suppression list that can be used in campaigns to suppress contacts from being sent mail.
Create Suppression List ContactTool to create a new suppression contact on a specified suppression list.
Create TemplateTool to create a new template with full HTML for postcard or letter.
Create WebhookTool to create a new webhook to receive campaign event notifications from Postalytics.
Delete AccountTool to delete a Postalytics account and all associated campaigns, templates, and lists.
Delete CampaignTool to delete a campaign from the system.
Delete Suppression ListTool to delete a specified suppression list.
Delete Suppression List ContactTool to delete a specific contact from a suppression list.
Get All Contact ListsTool to retrieve all contact lists for an account.
Get All Contacts on a ListTool to retrieve all contacts from a specified contact list with pagination support.
Get All Drip CampaignsTool to retrieve all triggered drip campaign names and endpoint IDs in the account.
Get All FlowsTool to retrieve all flows for the requester's account.
Get All WebhooksTool to retrieve all webhooks configured for the authenticated account.
Get IntegrationsTool to retrieve all Connect integrations configured for the authenticated user's account.
Get My AccountTool to retrieve basic account information for the authenticated user.
Get Suppression ListTool to get the details of a suppression list based on the id supplied.
Get Suppression List ContactTool to retrieve a specific contact from a suppression list.
Get Suppression List ContactsTool to get all contacts on a specified suppression list.
Get Suppression ListsTool to retrieve all suppression lists for the authenticated user.
Update AccountTool to update an existing account in the Postalytics system.
Update Suppression List ContactTool to update a suppression contact on the specified suppression list.

Way Forward

With Postalytics 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 Postalytics MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Postalytics MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Postalytics MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Postalytics MCP with Claude Code

Codex logo

Codex

Use Postalytics MCP with Codex

OpenClaw logo

OpenClaw

Use Postalytics MCP with OpenClaw

CLI logo

CLI

Use Postalytics MCP with CLI

Google ADK logo

Google ADK

Use Postalytics MCP with Google ADK

LangChain logo

LangChain

Use Postalytics MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Postalytics MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Postalytics MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Postalytics MCP with LlamaIndex

CrewAI logo

CrewAI

Use Postalytics MCP with CrewAI

FAQ

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

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

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

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

Used by agents from

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HubSpot
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Context
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HubSpot
Agent.ai
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