How to integrate Constant Contact MCP with Hermes

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 Constant Contact 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.

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Constant Contact is an email marketing and automation platform for small businesses. It helps teams build campaigns, manage contacts, and grow customer relationships.

93 Tools

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 Constant Contact 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 Constant Contact 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 Constant Contact 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 Constant Contact

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

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

5. Done!

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

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

Way Forward

With Constant Contact 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.

TOOLS

Supported Tools

Every Constant Contact action and event your agent gets out of the box.

Add Account Email Address

Add a new email address to a Constant Contact account.

Add Contact Taggings

Add Tags to Contacts.

Add list memberships

Add Contacts to Lists creates an activity to add contacts to one or more contact lists.

Copy Event

POST (copy) an existing event in Constant Contact.

Count Contact Consents

GET contact consent counts for a Constant Contact account.

Create Contact

Create a new contact in Constant Contact.

Create contact from sign-up form

Create or Update a Contact via sign-up form.

Create Contact List

Create a new contact list in Constant Contact.

Create contact tag

POST (Create) a Tag.

Create Custom Field

Create a new custom field for contacts in Constant Contact.

Create Email Campaign

Create a new email campaign in Constant Contact.

Create Event

Create a new event with default settings in Constant Contact.

Create Resend to Non-openers

Create a resend to non-openers campaign activity for an email campaign.

Create Social Post

Create a new social media post campaign.

Delete contact

DELETE a specific contact from your Constant Contact account.

Delete Contact List

Permanently deletes a contact list from Constant Contact by its ID.

Create contact delete activity

Delete multiple contacts in bulk by submitting a contact_delete activity.

Delete contact tag

Delete a specific contact tag from your Constant Contact account.

Delete contact tags

Delete one or more tags from contacts in Constant Contact.

Delete custom field

DELETE a specific contact custom field from your Constant Contact account.

Delete custom fields

Delete one or more custom fields from a Constant Contact account.

Delete Email Campaign

DELETE an Email Campaign from your Constant Contact account.

Delete contact list activity

Delete one or more contact lists from your Constant Contact account by submitting a list delete activity.

Delete Segment

Permanently deletes a segment from Constant Contact by its ID.

Export Contacts

Create a bulk activity that exports contacts to a CSV file.

Get account physical address

GET the Physical Address for the Account.

Get account summary

GET a summary of account details for a Constant Contact account.

Get activity status

GET the status of a specific bulk activity.

Get contact

GET a contact by their unique ID.

Get contact activity summary report

GET contact tracking activity summary for a specific contact.

Get Contact List

GET details for a specific contact list by its ID.

Get Contact Open and Click Rates Report

GET average open and click rates for a contact.

Get Contacts Export File

Retrieve the exported contacts file from a completed export contacts activity.

Get Contact SMS Engagement History

GET SMS Engagement History for a Contact.

Get contact tag details

GET Tag Details - Retrieves detailed information about a specific contact tag.

Get custom field

GET a custom field by its unique ID.

Get email campaign details

GET details for a single email campaign using its campaign ID.

Get Email Campaign Activity

GET details for a specific email campaign activity by its ID.

Get email campaign activity preview

GET the HTML Preview of an Email Campaign Activity.

Get Email Campaign Activity Schedule

GET an email campaign activity schedule.

Get email campaign activity send history

GET the send history of an email campaign activity.

Get email campaign ID cross-references

GET a collection of V2 and V3 API Email Campaign ID cross-references.

Get Email Campaign Statistics Report

GET statistics for one or more email campaigns.

Get Event

GET details for a single event by its unique ID.

Get list ID cross-references

GET a collection of V2 and V3 API List IDs cross-references.

Get Partner Webhook Subscription

GET details for a specific Partner Webhook Topic Subscription by its ID.

Get resend to non-openers

GET Details for a Resend to Non-openers Campaign Activity.

Get Segment

GET details for a specific segment by its unique ID.

Import contacts from CSV file

Import contacts into Constant Contact from a CSV file.

Import contacts from JSON

Bulk import contacts into Constant Contact using JSON format.

List account email addresses

GET a Collection of Account Email Addresses.

List account user privileges

Get the user privileges associated with your access token.

List activity statuses

GET a collection of bulk activities.

List Contact Lists

GET all contact lists for the Constant Contact account.

List contacts

GET Contacts Collection to retrieve a list of contacts from Constant Contact.

List contact tags

GET Details for All Tags - Retrieves all contact tags for the account.

List contact custom fields

GET custom_fields Collection to retrieve all contact custom field definitions.

List Email Campaigns

GET a collection of email campaigns from Constant Contact.

List Email Campaign Summaries Report

GET an Email Campaigns Summary Report from Constant Contact.

List Email Did Not Opens Report

GET an Email Did Not Opens Report to retrieve a list of contacts who did not open a specific email campaign.

List email forwards report

GET an Email Forwards Report for a specific email campaign activity.

List email opt-outs report

GET an Email Opt-outs Report for a specific email campaign activity.

List Email Unique Opens Report

GET an email unique opens report for a campaign activity.

List Events

GET a collection of events from Constant Contact.

List event track registrations

GET registrations for an event track to retrieve a list of registrations.

List Landing Page Contact Opens Report

GET a Contacts Opens Landing Page Report.

List Landing Page Unique Contact Adds Report

GET a Unique Contacts Adds Landing Page Report for a specific landing page campaign activity.

List Landing Page Unique Contact Clicks Report

GET unique contact clicks data for a landing page campaign.

List Landing Page Unique Contact Opens Report

GET a Unique Contacts Opens Landing Page Report to retrieve a list of contacts who uniquely opened a specific landing page campaign.

List landing page unique contact updates report

GET a Unique Contacts Updates Landing Page Report for a specific landing page campaign activity.

List Segments

GET all segments for the Constant Contact account.

List SMS Campaign Summaries Report

GET an SMS Campaigns Summary Report.

List Social Connections

GET social network connections for a Constant Contact account.

List Social Hashtag Groups

GET hashtag groups - Retrieves a paginated list of social hashtag groups.

List Social Profiles

GET social media profiles from Constant Contact.

Remove Contact Tagging

Remove tagging from contacts in Constant Contact.

Remove Tags from Contacts

Remove tags from contacts in Constant Contact.

Remove contacts from lists

Create a Remove Contacts from Lists activity to remove contacts from one or more lists.

Rename Email Campaign

PATCH (Update) the name of an existing email campaign in Constant Contact.

Rename Segment

PATCH (rename) an existing segment in Constant Contact.

Resubscribe Contact

Resubscribe an unsubscribed contact to one or more contact lists.

Undo Event Ticket Check-In

Undo check-in for event tickets.

Update Account Details

PUT (update) Account Details for the authenticated user.

Update Account Physical Address

PUT (update) the Physical Address for an Account.

Update Contact

PUT (update) an existing contact in Constant Contact.

Update Contact List

PUT (update) an existing contact list in Constant Contact.

Update Contact Tag

PUT (Update) a Tag.

Update Custom Field

Update an existing contact custom field in Constant Contact.

Update Email Campaign Activity

PUT (Update) an Email Campaign Activity in Constant Contact.

Update Event

PATCH (update) an existing event in Constant Contact.

Update Event Track Registration Payment Status

Update the payment status for event track registrations in Constant Contact.

Update Event Track Registrations

PUT (update) registration status for event track registrations.

Update Segment

PUT (update) an existing segment in Constant Contact.

FAQ

Frequently asked questions

With a standalone Constant Contact MCP server, the agents and LLMs can only access a fixed set of Constant Contact tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Constant Contact and many other apps based on the task at hand, all through a single MCP endpoint.

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 Constant Contact tools.

Yes, absolutely. You can configure which Constant Contact 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.

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 Constant Contact data and credentials are handled as safely as possible.

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