How to connect Ntfy to Claude Cowork

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Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Ntfy account to Cowork via Composio Connect, enabling it to send push notification for build failures, notify me of high-priority alerts, broadcast message to all devices, and more such actions on your behalf without compromising your account security.

Also integrate Ntfy with

Connecting Ntfy to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Ntfy account

Back in Cowork, ask the agent to connect to Ntfy or give it any Ntfy-related task.

For example, ask Cowork to:

  • "Send push notification for build failures"
  • "Notify me of high-priority alerts"
  • "Broadcast message to all devices"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Ntfy account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Ntfy through MCP without you sharing account credentials directly with the agent.

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

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

Supported Tools & Triggers

Tools
Create NTFY AccountTool to register a new user account on ntfy.
Create Web Push SubscriptionTool to register a web push subscription for browser notifications.
Delete Web Push SubscriptionTool to unregister a web push subscription from the ntfy server.
Fetch Cached MessagesTool to fetch cached messages from a ntfy topic.
Fetch Latest Message from TopicTool to fetch the most recent message from a topic's cache.
Fetch Scheduled MessagesTool to fetch messages scheduled for later delivery from a topic.
Get Account InformationTool to retrieve account data for authenticated user or anonymous user.
Get Server StatisticsTool to retrieve server statistics including message counts and publishing rates.
Get Service TiersTool to list all available ntfy service tiers with their limits and features.
Get File Attachment MetadataTool to get file attachment metadata from a message without downloading the file content.
Check NTFY Service HealthTool to check the health status of the ntfy service.
Poll Messages from TopicTool to poll for messages from an ntfy topic without maintaining a long-standing connection.
Publish Message as JSON to NTFYTool to publish messages as JSON to ntfy.
Publish Message to TopicTool to publish a message to a ntfy topic.
Publish Message to Topic (PUT)Tool to publish a message to a topic using PUT method.
Publish Message via GETTool to publish messages to ntfy via GET request with URL parameters.
Send Message via WebhookTool to send messages via webhook endpoint using simple GET request.
Subscribe to NTFY Topic with FiltersTool to subscribe to a ntfy topic with filters based on message fields (id, message, title, priority, tags).
Subscribe to Topic (JSON Stream)Tool to subscribe to a ntfy topic and receive messages as JSON stream.
Subscribe to Multiple NTFY TopicsTool to subscribe to multiple ntfy topics simultaneously using comma-separated topic list.
Subscribe to Topic (Raw Stream)Tool to subscribe to a topic and receive message bodies as raw text stream.
Trigger NTFY WebhookTool to trigger a webhook to publish a message to an ntfy topic via simple HTTP GET request.

Available tools and triggers

After setup, the supported Ntfy tools and triggers listed on this page are available to Cowork through Composio Connect.

You can now ask Cowork to handle Ntfy workflows in natural language, from quick summaries and drafting tasks to more complex multi-step work across connected apps.

How to build Ntfy MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Ntfy MCP?

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

Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork 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 Ntfy tools.

Can I manage the permissions and scopes for Ntfy while using Tool Router?

Yes, absolutely. You can configure which Ntfy 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.

How safe is my data with Composio Tool Router?

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 Ntfy data and credentials are handled as safely as possible.

Used by agents from

Context
Letta
glean
HubSpot
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Altera
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Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.