How to integrate Ntfy MCP with Grok Build

Connect Grok Build to Ntfy MCP. Send push notification for build failures, notify me of high-priority alerts, and more from your terminal, with authentication handled for you.

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Ntfy is a notification service to send push messages to phones or desktops. Instantly deliver alerts and updates to users, devices, or teams.

22 Tools

How to integrate Ntfy MCP with Grok Build

Grok Build is xAI's terminal coding agent. It runs on Grok 4.5, plans its work before it acts, and can run multiple sub-agents in parallel. It also reads Claude Code's MCP configuration, so any server you already have in a .mcp.json is picked up with no changes.

In this guide, I will show you how to connect your Ntfy account to Grok Build through Composio, so it can send push notification for build failures, notify me of high-priority alerts, broadcast message to all devices, and more without leaving the terminal. Composio holds the OAuth tokens for you, and Grok Build only calls the tools you approve.

Also integrate Ntfy with

ChatGPT WorkAntigravityOpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexCursorVS CodeOpenCodeOpenClawHermesGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Why use Composio over a standalone MCP server?

  • Read and write access. Composio's Ntfy integration lets Grok Build take real actions like creating drafts, sending updates, and labeling records, not just reading data.
  • 1,000+ SaaS toolkits out of the box. One endpoint gives you a full catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Wire up a single Composio server instead of maintaining a separate MCP entry for each app.
  • Smart, context-aware tool loading. Grok Build caps how many tools it holds in a single request. Composio loads only the tools a task needs, so you do not spend that budget on tools you are not using.
  • Cross-app automation. Chain actions across apps in one run. Pull a thread, summarize it in Notion, and post the highlights to Slack from a single prompt.

Prerequisites

  • Grok Build installed and signed in. Install with curl -fsSL https://x.ai/cli/install.sh | bash on macOS or Linux, or irm https://x.ai/cli/install.ps1 | iex on Windows PowerShell. On first launch Grok opens a browser to authenticate; for headless or CI use, set an XAI_API_KEY environment variable instead (create the key at console.x.ai).
  • Access to the Ntfy account you want to connect.
  • The Composio MCP endpoint. Composio's server is remote and hosted, so there is nothing to run locally and no tunnel to set up.

Step-by-step: Connect Ntfy to Grok Build

1. Install and verify Grok Build

Install the CLI, then restart your shell so the grok binary lands on your PATH:

bash
curl -fsSL https://x.ai/cli/install.sh | bash
which grok

On Windows, install with PowerShell instead: irm https://x.ai/cli/install.ps1 | iex. If which grok returns a path, you are set. Grok Build runs on Grok 4.5 by default; you can switch models inside the session with /model <name>.

2. Add the Composio server

Add Composio as a remote HTTP MCP server with the grok mcp add command:

bash
grok mcp add --transport http composio https://connect.composio.dev/mcp

You can also add and manage servers from inside a session. Run /mcps to open the extensions modal on the MCP tab, then add a new server and paste the Composio URL. Added this way, Grok auto-detects the name from the URL and lists the server as connect:

bash
https://connect.composio.dev/mcp
Grok Build /mcps extensions modal listing MCP servers Grok Build adding the Composio MCP server with its URL

Grok also reads Claude Code-style config, so an entry in ~/.grok/config.toml or a project .mcp.json works the same way.

3. Authenticate

Composio uses OAuth. In the /mcps modal, select the Composio server and press i to authenticate (Grok also triggers this browser flow automatically the first time it uses a Composio tool). Click Allow to authorize access. Grok stores the tokens under ~/.grok/mcp_credentials.json, and /mcps shows Composio as connected.

Grok Build prompting to authenticate the Composio MCP server Composio authorization screen with the Allow button for Grok Build

4. Start building

Ask Grok to work with your Ntfy account through Composio. On the first Ntfy action, Composio prompts you to connect the account through OAuth. Approve the scopes once, and Composio handles token refresh from there.

What you can do after connecting Ntfy

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

Security + privacy notes (important)

  • Use least-privilege access. Grant only the Ntfy scopes you actually need.
  • Review OAuth scopes before approving. Check that the requested scopes match what you expect Composio and Grok Build to do.
  • Keep write actions human-reviewed. Grok Build proposes a plan before it acts. Leave that approval step on for actions like sending messages or editing records.
  • Keep secrets out of version control. Your XAI_API_KEY and any tokens should never be committed. Use environment variables or a secrets manager.
TOOLS

Supported Tools

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

Create NTFY Account

Tool to register a new user account on ntfy.

Create Web Push Subscription

Tool to register a web push subscription for browser notifications.

Delete Web Push Subscription

Tool to unregister a web push subscription from the ntfy server.

Fetch Cached Messages

Tool to fetch cached messages from a ntfy topic.

Fetch Latest Message from Topic

Tool to fetch the most recent message from a topic's cache.

Fetch Scheduled Messages

Tool to fetch messages scheduled for later delivery from a topic.

Get Account Information

Tool to retrieve account data for authenticated user or anonymous user.

Get Server Statistics

Tool to retrieve server statistics including message counts and publishing rates.

Get Service Tiers

Tool to list all available ntfy service tiers with their limits and features.

Get File Attachment Metadata

Tool to get file attachment metadata from a message without downloading the file content.

Check NTFY Service Health

Tool to check the health status of the ntfy service.

Poll Messages from Topic

Tool to poll for messages from an ntfy topic without maintaining a long-standing connection.

Publish Message as JSON to NTFY

Tool to publish messages as JSON to ntfy.

Publish Message to Topic

Tool 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 GET

Tool to publish messages to ntfy via GET request with URL parameters.

Send Message via Webhook

Tool to send messages via webhook endpoint using simple GET request.

Subscribe to NTFY Topic with Filters

Tool 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 Topics

Tool 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 Webhook

Tool to trigger a webhook to publish a message to an ntfy topic via simple HTTP GET request.

FRAMEWORKS

How to build Ntfy MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use Ntfy MCP with ChatGPT Work

Antigravity logo

Antigravity

Use Ntfy MCP with Antigravity

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Ntfy MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Ntfy MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Ntfy MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Ntfy MCP with Claude Cowork

Codex logo

Codex

Use Ntfy MCP with Codex

Cursor logo

Cursor

Use Ntfy MCP with Cursor

VS Code logo

VS Code

Use Ntfy MCP with VS Code

OpenCode logo

OpenCode

Use Ntfy MCP with OpenCode

OpenClaw logo

OpenClaw

Use Ntfy MCP with OpenClaw

Hermes logo

Hermes

Use Ntfy MCP with Hermes

Google ADK logo

Google ADK

Use Ntfy MCP with Google ADK

LangChain logo

LangChain

Use Ntfy MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Ntfy MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Ntfy MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Ntfy MCP with LlamaIndex

CrewAI logo

CrewAI

Use Ntfy MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Ntfy MCP with Pydantic AI

AutoGen logo

AutoGen

Use Ntfy MCP with AutoGen

FAQ

Frequently asked questions

A standalone Ntfy MCP server gives Grok Build a fixed set of Ntfy tools tied to that one server. The Composio Tool Router lets Grok Build load tools from Ntfy and many other apps on demand, based on the task, all through a single endpoint.

Yes. Grok Build ships with native MCP support. Add a server with the grok mcp add command, from the in-session /mcps modal, or by editing ~/.grok/config.toml. It also reads Claude Code-style .mcp.json files, so Grok Build discovers the tools automatically.

Yes. Grok Build has zero-migration compatibility with Claude Code's configuration, so the same Composio server entry works in both without edits.

Tokens, keys, and configuration are encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant, so your Ntfy data and credentials are handled to that standard.

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