How to integrate Adafruit IO MCP with Claude Code

Manage your Adafruit IO directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: Via Composio Connect - Direct and easiest approach Via Composio SDK - Programmatic approach with more control

Adafruit IO logoAdafruit IO
Api Key

Adafruit IO is Adafruit's cloud platform for connected device and IoT project data. It helps you store, visualize, and act on sensor feeds without running your own backend.

21 Tools

Introduction

Manage your Adafruit IO directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate Adafruit IO with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

Connecting Adafruit IO to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

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

The Adafruit IO MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Adafruit IO account. It provides structured and secure access to your feeds, device data, groups, dashboards, and account status, so your agent can publish readings, review data, organize feeds, manage dashboards, and monitor usage on your behalf.

  • Feed creation and management: Have your agent create, review, update, or delete feeds used to store readings from your connected devices.
  • Device data publishing and review: Let the agent publish timestamped values, inspect recent feed data, and retrieve, correct, or remove specific readings.
  • Feed organization with groups: Direct your agent to create and update groups, add or remove feeds, and review how your device feeds are organized.
  • Dashboard management: Instruct your agent to create dashboards for feed data, review existing dashboards and their blocks, update dashboard details, or remove dashboards.
  • Account and usage monitoring: Have your agent check your Adafruit IO account identity, plan limits, and current data write usage before publishing more readings.

Connecting Adafruit IO via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here Adafruit IO) for even more tool search precision. It's secure and reliable.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step10 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A Adafruit IO account
  • Basic knowledge of Python or TypeScript
2

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

3

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)
5

Install Composio library

npm install @composio/core dotenv

Install the Composio TypeScript library to create MCP sessions.

  • @composio/core provides the core Composio functionality
  • dotenv loads environment variables from your .env file
6

Generate Composio MCP URL

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['adafruit_io'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http adafruit_io-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Create a script to generate a Composio MCP URL for Adafruit IO. This URL will be used to connect Claude Code to Adafruit IO.

What's happening

  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for Adafruit IO
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it
7

Run the script and copy the MCP URL

node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts

Run your TypeScript script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output
8

Add Adafruit IO MCP to Claude Code

bash
claude mcp add --transport http adafruit_io-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (adafruit_io-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

9

Verify the installation

bash
claude mcp list

Check that your Adafruit IO MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your adafruit_io-composio entry in the list
  • This confirms that Claude Code can now access Adafruit IO tools

If everything is wired up, you should see your adafruit_io-composio entry listed:

Claude Code MCP list showing the toolkit MCP server
10

Authenticate Adafruit IO

The first time you try to use Adafruit IO tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with Adafruit IO
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the Adafruit IO authorization flow
  • Return to the terminal and start using Adafruit IO through Claude Code

Once authenticated, you can ask Claude Code to perform Adafruit IO operations in natural language. For example:

  • "Summarize temperature feed anomalies today"
  • "Publish humidity reading to greenhouse feed"
  • "List recent door sensor events"

Complete Code

Here's the complete code to get you started with Adafruit IO and Claude Code:

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['adafruit_io'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http adafruit_io-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Conclusion

You've successfully integrated Adafruit IO with Claude Code using Composio's MCP server. Now you can interact with Adafruit IO directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for Adafruit IO operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various Adafruit IO operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

TOOLS

Supported Tools

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

Add Feeds to Group

Sequentially add 1-10 existing feeds to one group using one documented provider request per feed.

Create Dashboard

Create a dashboard for visualizing and controlling feed data.

Create Feed

Create a feed, optionally within an existing group.

Create Group

Create a group for organizing feeds.

Delete Dashboard

Permanently delete one dashboard by exact key.

Delete Data Point

Permanently delete one feed data point by ID.

Delete Data Points

Permanently delete 1-30 feed data points sequentially through Adafruit IO's single-data-point DELETE endpoint, bounded by the Free-plan limit of 30 data mutations per minute.

Delete Feed

Permanently delete one feed and its retained data by exact feed key.

Delete Group

Permanently delete one group by exact key.

Get Account Status

Return compact identity, plan limits, and current data-write throttle usage for the connected Adafruit IO account.

Get Dashboards

List dashboards, or retrieve one dashboard and its blocks by key.

Get Data Point

Retrieve one feed data point by its exact ID.

Get Feeds

List feeds, or retrieve one feed by key with optional data summary details.

Get Groups

List groups with feed summaries, or retrieve one group by key.

List Feed Data

Return one newest-first page of feed data with an opaque cursor for the next older page.

Publish Feed Data

Publish one or multiple timestamped values to a feed, using the batch endpoint only when multiple points are supplied.

Remove Feeds from Group

Sequentially remove 1-10 feeds from one group using one documented provider request per feed.

Update Dashboard

Update an existing dashboard by exact dashboard key.

Update Data Point

Replace the value and optional metadata of one existing feed data point.

Update Feed

Update an existing feed by exact feed key.

Update Group

Update an existing group by exact group key.

FAQ

Frequently asked questions

With a standalone Adafruit IO MCP server, the agents and LLMs can only access a fixed set of Adafruit IO tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Adafruit IO and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Code 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 Adafruit IO tools.

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

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