Smol Machines MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Smol Machines MCP or direct API to create isolated machines, run bounded commands, transfer files, and inspect usage through natural language.

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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

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Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
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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.

SETUP GUIDE

Connect Smol Machines MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["smol_machines"],
  mcp: true,
});
Create a session scoped to Smol Machines and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Create an isolated Smol Cloud machine and run the command `uname -a` on it.",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Smol Machines request
SETUP GUIDE

Connect Smol Machines API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["smol_machines"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Smol Machines
3

Run Smol Machines tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Create an isolated Smol Cloud machine and run the command `uname -a` on it." }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Smol Machines tool calls through the session, and print the final answer

Why Use Composio?

AI Native Smol Machines Integration

  • Supports both Smol Machines MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable machine and command execution
  • Rich coverage for creating machines, running commands, transferring files, and checking usage

Managed Auth

  • Connect your Smol Machines API key securely without hard-coding it in agent prompts
  • Central place to manage, scope, and revoke Smol Machines access
  • Per user and per environment credentials for safer machine operations

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Clear schemas help agents pass machine IDs, commands, paths, and limits correctly
  • Comprehensive execution logs show what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Smol Machines
  • Scoped, least privilege access to isolated machines and bounded operations
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, Smol Machines requires you to configure your own API key. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Smol Machines connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Smol Machines account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Smol Machines actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Smol Machines at any time.

When you connect a Smol Machines account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Smol Machines as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Smol Machines. If Smol Machines lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Smol Machines at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Smol Machines connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Smol Machines rejects the old key. Create a new key in Smol Machines and reconnect the account from the Composio dashboard or by asking your agent to reconnect Smol Machines. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Smol Machines use. Paid plans add higher limits and team features. Your Smol Machines plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Smol Machines accounts).

With Composio, you connect Smol Machines once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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