How to integrate Smol Machines MCP with Atomic Agent

Connect Atomic Agent 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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Api Key

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

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Smol Machines.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Smol Machines account. See the Atomic Agent documentation for installation instructions.

Also integrate Smol Machines with

How Atomic Agent connects to Smol Machines

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Smol Machines to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Smol Machines. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Smol Machines account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

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.

Use Smol Machines from Atomic Agent

With your account connected, ask Atomic Agent to work with Smol Machines in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

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.

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. Atomic Agent 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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