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How to integrate Smol Machines MCP with Hermes

Connect Hermes to Smol Machines MCP. Create a smol cloud machine for testing, run bounded diagnostics on your machine, and more using natural language, with authentication handled for you.

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Smol Machines is a cloud service for creating and operating isolated virtual machines. It provides a safe, bounded environment for running commands and moving files.

12 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 Smol Machines 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 Smol Machines with

ChatGPTClaude CoworkAtomic Agent

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 Smol Machines 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 Smol Machines

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

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

5. Done!

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

The Smol Machines MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Smol Machines account. It provides structured and secure access to isolated Smol Cloud machines, file transfer, bounded command execution, and account and usage information, so your agent can create, start, stop, inspect, and operate machines on your behalf.

  • Machine lifecycle management: Have your agent create machines with defined resources, automatic stop and deletion settings, and network policies, then start, stop, or permanently delete them.
  • Bounded command execution: Let the agent run foreground commands on a hosted machine for tasks such as setup, diagnostics, and controlled workloads.
  • File transfer: Direct your agent to upload files to a machine or download files from it when moving code, data, or generated results.
  • Machine inspection: Instruct your agent to list machines, filter them by labels, and check their configuration, lifecycle state, and readiness.
  • Usage and account tracking: Have your agent review account limits, plan details, billing-period usage, and machine-level usage and costs.

Way Forward

With Smol Machines 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 Smol Machines action and event your agent gets out of the box.

Create Machine

Create one bounded Smol Cloud machine in the stopped state with explicit resources, a finite auto-stop interval and deletion TTL, and an explicit outbound network policy.

Delete Machine

Permanently delete one Smol Cloud machine by its exact machine ID.

Download File

Download and offload one file from an exact cloud machine.

Execute Command

Run one bounded foreground argv command on an exact hosted Smol Cloud machine.

Get Account

Get the connected account's status, plan, effective machine limits, billing-period usage, and spend in integer micros.

Get Account Usage

Get metered usage for the connected account's provider-defined period, keeping the requested and consumed metric windows distinct.

Get Machine

Get configuration, lifecycle state, and readiness for one cloud machine by its exact machine id, not by name.

Get Machine Usage

Get billing-period usage and cost in integer micros for one exact machine ID.

List Machines

List cloud machines owned by the connected account, optionally requiring all supplied labels to match.

Start Machine

Start one stopped cloud machine by exact machine ID.

Stop Machine

Stop compute for one cloud machine by exact id while preserving its filesystem.

Upload File

Upload a file of at most 8,000,000 bytes to a safe relative guest path on one cloud machine identified by its exact machine ID.

FRAMEWORKS

How to build Smol Machines MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Smol Machines MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Smol Machines MCP with Claude Cowork

Atomic Agent logo

Atomic Agent

Use Smol Machines MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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