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How to integrate Kernel MCP with Hermes

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Kernel MCP is a cloud-browser infrastructure and browser automation platform with a hosted OAuth server. Use it to run reliable remote browsing sessions and automate web tasks without managing browsers.

20 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 Kernel 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 Kernel MCP with

ChatGPTClaude Cowork

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 Kernel 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 Kernel

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

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

5. Done!

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

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

Way Forward

With Kernel 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 Kernel MCP action and event your agent gets out of the box.

Browser curl

Send an HTTP request through an existing Kernel browser session's Chrome network stack.

Computer action

Execute computer actions on a browser session.

Exec command

Execute a command synchronously inside a browser VM.

Execute playwright code

Execute Playwright/TypeScript automation code against an existing Kernel browser session.

Get connection context

Inspect the authenticated Kernel connection before a project-scoped operation.

Get more tools

Check for additional tools whenever your task might benefit from specialized capabilities - even if existing tools could work as a fallback.

Manage api keys

Manage Kernel API keys.

Manage apps

Manage Kernel apps when an agent needs to discover deployed app actions, invoke an app, or inspect deployment/invocation state.

Manage auth connections

Manage reusable authenticated profiles for third-party websites.

Manage browser pools

Manage pre-warmed browser pools when an agent needs fast browser acquisition or reusable session capacity.

Manage browsers

Manage browser sessions and their archived telemetry.

Manage credential providers

Manage external credential providers (e.

Manage credentials

Manage credentials stored in Kernel for managed auth.

Manage extensions

Manage browser extensions uploaded to Kernel.

Manage profiles

Manage browser profiles when an agent needs persistent cookies, login state, or reusable browser state.

Manage projects

Manage Kernel projects for resource isolation within an organization.

Manage proxies

Manage proxy configurations for routing browser traffic.

Manage replays

Manage video replay recordings for a browser session.

Search docs

Search Kernel platform documentation for guides, tutorials, and API references.

Submit feedback

send feedback about anything KERNEL to the KERNEL team.

FRAMEWORKS

How to build Kernel MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Kernel MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Kernel MCP with Claude Cowork

FAQ

Frequently asked questions

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

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

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