How to integrate Ntfy MCP with Codex

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Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Ntfy MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Ntfy with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 870+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Ntfy MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on connect.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

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.

Conclusion

You've successfully integrated Ntfy with Codex using Composio's MCP server. Now you can interact with Ntfy directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Ntfy operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 870+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Ntfy operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Ntfy MCP Agent with another framework

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Use Ntfy MCP with OpenAI Agents SDK

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Claude Agent SDK

Use Ntfy MCP with Claude Agent SDK

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Claude Code

Use Ntfy MCP with Claude Code

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OpenClaw

Use Ntfy MCP with OpenClaw

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CLI

Use Ntfy MCP with CLI

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Google ADK

Use Ntfy MCP with Google ADK

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LangChain

Use Ntfy MCP with LangChain

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Vercel AI SDK

Use Ntfy MCP with Vercel AI SDK

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Mastra AI

Use Ntfy MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Ntfy MCP with LlamaIndex

CrewAI logo

CrewAI

Use Ntfy MCP with CrewAI

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 Codex?

Yes, you can. Codex 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

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Context
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HubSpot
Agent.ai
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