How to Use the Postscript MCP in Claude

Q: How do I install the Postscript MCP Server on Claude Desktop?

Open your claudedesktopconfig.json file and add the server configuration under the mcpServers key. Once saved, this MCP setup allows your agent to immediately access tools like listcampaigns directly in your chat.

Q: Can I use Claude Desktop to unsubscribe a user in Postscript?

Yes, you can. By asking your agent to run updatesubscriber inside Claude Desktop, you can change a user's subscription status or update their profile details instantly.

Q: How do I check my active SMS keywords?

Simply ask your agent to run listkeywords in your chat. This tool returns your complete list of active opt-in keywords so you can plan your next physical or digital sign-up drive.

Run high-converting SMS campaigns directly from Claude Desktop by connecting your live Shopify subscriber data to your chat window.

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Connect Postscript MCP to Claude Desktop

Create your Vinkius account to connect Postscript to Claude Desktop — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup Postscript with Claude Desktop

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Sync Shopify opt-ins inside Claude Desktop

Stop wasting time with manual CSV exports from Shopify just to update your SMS lists. This MCP integration lets you query your live contact database directly inside your chat view. When you need to check a customer's status or verify an opt-in, ask your agent to run `get_subscriber` or `list_subscribers` to get immediate, real-time answers. If a customer reaches out to your support channel asking to update their phone number or marketing preferences, you can handle it on the spot. Have your agent execute `update_subscriber` or `create_subscriber` to keep your list compliant without opening a single browser tab.

Analyze live SMS campaigns using this tool

Stop guessing which text messages are actually driving Shopify sales. This MCP Server lets you pull raw performance metrics into your workspace so you can see what works. Your agent can call `get_campaign` or `list_campaigns` to fetch immediate revenue and click data. Once you have the raw numbers in your chat, you can ask your agent to write your next high-converting broadcast based on what actually converted. You can even check your automated flows by calling `list_automations` to see where subscribers are dropping off.

Manage automation webhooks on the fly

Keeping your tech stack aligned means reacting to subscriber events the second they happen. Use `create_webhook` to register new event listeners that alert your external systems when someone opts in or out. If an endpoint starts failing or you need to clean up your active connections, you don't have to write custom script files. Just tell your agent to run `list_webhooks` or `delete_webhook` to audit and purge broken hooks directly.

Setup guide

Set up Postscript 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 Postscript 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 Postscript 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 postscript-mcp.

json

{
  "mcpServers": {
    "postscript-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 Postscript. 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 Postscript MCP in Claude Desktop

Open your claude_desktop_config.json file and add the server configuration under the mcpServers key. Once saved, this MCP setup allows your agent to immediately access tools like `list_campaigns` directly in your chat.

Yes, you can. By asking your agent to run `update_subscriber` inside Claude Desktop, you can change a user's subscription status or update their profile details instantly.

The integration lets you pull campaign data and subscriber lists, but actual MMS media hosting is managed on the platform side. You can use the agent to draft MMS copy and check existing campaigns with `get_campaign`.

Simply ask your agent to run `list_keywords` in your chat. This tool returns your complete list of active opt-in keywords so you can plan your next physical or digital sign-up drive.

Your phone numbers and subscriber profiles are protected through local execution. Claude Desktop communicates with the API using your secure token via an encrypted local sandbox, meaning your customer data never touches third-party intermediary servers.

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