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How to integrate Kit MCP with Hermes

Connect Hermes to Kit MCP. Add new subscriber to your welcome form, create a custom field for subscriber notes, and more using natural language, with authentication handled for you.

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Kit is a platform for creators and developers to automate tasks and publish apps on the Kit App Store. It helps streamline workflows so you can focus on what matters most.

49 Tools17 Triggers

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 Kit 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 Kit with

Claude CodeClaude CoworkOpenAI Agents SDKClaude Agent SDKCodexOpenClawAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,500+ 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 Kit 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 Kit

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

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

5. Done!

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

The Kit MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Kit account. It provides structured and secure access to your subscriber lists, tags, forms, and automations, so your agent can perform actions like managing subscribers, creating tags, updating custom fields, and handling broadcasts on your behalf.

  • Subscriber management and automation: Add new subscribers to forms, remove subscribers, or update their details to keep your audience lists accurate and engaged.
  • Custom field and tag creation: Automatically create, update, or delete custom fields and tags, making it easy to segment and personalize your communications.
  • Webhook and event setup: Set up or remove webhooks so your agent can listen for subscriber or purchase events and trigger automations as needed.
  • Broadcast and campaign control: Delete obsolete broadcasts or manage your messaging campaigns directly through your agent for streamlined outreach.
  • Account insights and configuration: Retrieve detailed account information, including plan details and primary contact, to keep your integrations and automations running smoothly.

Way Forward

With Kit 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 & TRIGGERS

Supported Tools and Triggers

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

Add Subscriber to Form

Add an existing subscriber to a form by their IDs.

Add Subscriber to Form by Email

Add an existing subscriber to a form using their email address.

Add Subscriber to Sequence

Enroll an existing Kit subscriber in an active email sequence.

Bulk Remove Tags From Subscribers

Remove multiple Kit tag-subscriber associations.

Create Broadcast

Create a Kit email broadcast for subscribers with a subject and content.

Create Custom Field

Tool to create a new custom field for subscriber data.

Create Subscriber

Tool to create a new subscriber or update an existing one (upsert).

Create Tag

Tool to create a new tag in the account.

Create Webhook

Creates a webhook subscription for real-time event notifications.

Delete Broadcast

Tool to delete a specific broadcast.

Delete Custom Field

Tool to delete a specific custom field.

Delete Subscriber

Unsubscribe a subscriber from all email communications by their ID.

Delete Tag

Tool to delete a tag by ID.

Delete Webhook

Tool to delete a webhook by ID.

Filter Subscribers

Tool to filter subscribers based on engagement criteria such as email opens, clicks, or delivery status.

Get Account

Tool to retrieve current account information.

Get Account Colors

Tool to retrieve list of colors associated with the account.

Get Broadcast

Tool to retrieve details of a specific broadcast by ID.

Get Broadcast Clicks

Tool to retrieve link click data for a specific broadcast by ID.

Get Broadcast Stats

Tool to retrieve statistics for a specific broadcast by ID.

Get Creator Profile

Tool to retrieve the creator profile information for the account.

Get Email Stats

Tool to retrieve email statistics for the account.

Get Growth Stats

Tool to retrieve growth statistics for the account over a date range.

Get Sequence Email

Retrieve one sequence email with its full content and delivery settings.

Get Subscriber

Tool to retrieve a specific subscriber by their ID.

Get Subscriber Stats

Tool to retrieve email stats for a specific subscriber.

List Broadcasts

Tool to retrieve a paginated list of all broadcasts.

List Custom Fields

Tool to retrieve a paginated list of custom fields.

List Email Templates

Retrieve a paginated list of all email templates in the Kit account.

List Forms

Lists all forms in your Kit account with optional filtering and cursor-based pagination.

List Segments

Tool to retrieve a paginated list of segments.

List Sequence Emails

List emails in a sequence with optional content, stats, and pagination.

List Sequences

Tool to retrieve a paginated list of all sequences.

List Sequence Subscribers

List subscribers enrolled in a sequence with filters and cursor pagination.

List Subscribers

Tool to retrieve a list of subscribers.

List Subscribers For Form

Retrieves subscribers for a specific form by ID with optional filtering and cursor-based pagination.

List Subscriber Tags

List tags currently applied to a Kit subscriber.

List Tags

Retrieve a paginated list of all tags in the Kit account.

List Tag Subscribers

Tool to retrieve subscribers for a specific tag.

List Webhooks

Retrieve a paginated list of all webhooks configured in the Kit account.

Remove Tag From Subscriber

Tool to remove a tag from a subscriber using their subscriber ID.

Tag Subscriber

Tool to associate a subscriber with a specific tag by ID.

Tag Subscriber by Email

Assigns a tag to an existing subscriber using their email address.

Untag Subscriber by Email

Tool to remove a tag from a subscriber using their email address.

Update Account Colors

Tool to update the list of colors for the account.

Update Custom Field

Tool to update a custom field's label.

Update Sequence Email

Partially update a Kit sequence email.

Update Subscriber

Tool to update an existing subscriber's information.

Update Tag

Tool to update a tag's name by ID.

FRAMEWORKS

How to build Kit MCP Agent with another framework

Claude Code logo

Claude Code

Use Kit MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Kit MCP with Claude Cowork

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Kit MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Kit MCP with Claude Agent SDK

Codex logo

Codex

Use Kit MCP with Codex

OpenClaw logo

OpenClaw

Use Kit MCP with OpenClaw

Atomic Agent logo

Atomic Agent

Use Kit MCP with Atomic Agent

Google ADK logo

Google ADK

Use Kit MCP with Google ADK

LangChain logo

LangChain

Use Kit MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Kit MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Kit MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Kit MCP with LlamaIndex

CrewAI logo

CrewAI

Use Kit MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Kit MCP with Pydantic AI

AutoGen logo

AutoGen

Use Kit MCP with AutoGen

FAQ

Frequently asked questions

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

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

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