How to Use the AT&T Messaging MCP in Claude

Q: How do I send a bulk SMS with AT&T Messaging in Claude Desktop?

Use the sendbulksms tool. Give your agent the list of numbers and the message text. Claude Desktop will call the tool and return a job ID and the status for each recipient.

Q: Can I check if a message was delivered?

Yes. After you send a message with sendsms or sendmms, you get a message ID back. Give that ID to your agent and ask it to use the getmessagestatus tool to see the latest delivery status.

Q: What's the easiest way to manage AT&T Messaging campaign keywords with Claude Desktop?

Use the getkeywordresponses tool. Ask your agent to fetch the configured auto-replies for your shortcode. This lets you review the logic for opt-ins or opt-outs without leaving the chat.

Manage your AT&T SMS campaigns right from the Claude Desktop chat. No more switching contexts to send a text.

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Connect AT&T Messaging MCP to Claude Desktop

Create your Vinkius account to connect AT&T Messaging to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup AT&T Messaging with Claude Desktop

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Provision and Manage Shortcodes

The `create_shortcode` tool lets you provision a new number for your next campaign. Tell your agent the keyword you need, and it gets the process started, returning the provisioning status and a timeline for activation. When the campaign's over, just tell Claude to decommission the number using `delete_shortcode`. You can also use `get_keyword_responses` to check the auto-replies you have set up for things like 'HELP' or 'JOIN'. This MCP server gives you direct access to campaign logic.

Send Texts and Media from the Chat

Use `send_sms` to fire off a quick transactional message, like a one-time password or an order confirmation. If you need to reach a bunch of people at once, `send_bulk_sms` handles mass alerts or promo blasts to up to 164 numbers in a single shot. For marketing that needs a visual punch, the `send_mms` tool is what you want. Give your agent the recipient, the text, and a URL to the image or media. It's a fast way to send product shots or visual alerts without building a custom app.

Track Delivery and Read Replies

You need to know if your messages actually arrived. Ask Claude to check a message ID with `get_message_status` to see if it was delivered or failed. It's great for debugging failed sends on the fly. To see what customers are sending back, use `get_inbound_messages`. Your agent will pull the latest replies, including who sent them and what they said. For a broader view, `list_messages` gives you a full history for compliance checks or audits.

Setup guide

Set up AT&T Messaging MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The AT&T Messaging MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the AT&T Messaging MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under att-messaging-mcp.

json

{
  "mcpServers": {
    "att-messaging-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by AT&T Messaging. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about AT&T Messaging MCP in Claude Desktop

Use the `send_bulk_sms` tool. Give your agent the list of numbers and the message text. Claude Desktop will call the tool and return a job ID and the status for each recipient.

Yes. After you send a message with `send_sms` or `send_mms`, you get a message ID back. Give that ID to your agent and ask it to use the `get_message_status` tool to see the latest delivery status.

You install it as a Desktop Extension or connect it as a Custom Connector on the web. Once connected, you can ask Claude to use tools like `send_sms` or `get_inbound_messages` directly in your chat.

Use the `get_keyword_responses` tool. Ask your agent to fetch the configured auto-replies for your shortcode. This lets you review the logic for opt-ins or opt-outs without leaving the chat.

This MCP server only handles messaging data: phone numbers, message content, and media URLs that you provide. All communication is over a secure, encrypted channel, and Vinkius handles the auth tokens so your credentials stay safe.

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