How to Use the Postscript MCP in Mastra AI

Q: How do I add Postscript tools to a Mastra AI agent?

Initialize the MCPClient with your server URL and call listTools(). Spread those directly into your agent's tool array.

Q: Can Mastra AI handle rate limits when updating Postscript subscribers?

Yes. The framework automatically retries failed updatesubscriber calls. You configure the backoff strategy directly in your workflow definition.

Q: Does the Postscript MCP Server require human approval in Mastra AI for text blasts?

You enforce this in your client. Set requireToolApproval on tools like createsubscriber so a manager signs off before the agent alters the list.

Q: How does this setup track SMS keywords?

The agent runs listkeywords to fetch active opt-in phrases. You pipe that data into a conditional branch to determine which campaign triggers next.

Build resilient SMS marketing workflows in Mastra AI with automatic retries for Postscript subscriber updates.

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Setup Postscript with Mastra AI

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Perplexity

Sync subscribers with automatic retries

The `update_subscriber` tool modifies contact records when your Mastra AI workflow detects a status change. If a sync fails due to rate limits, the framework's exponential backoff kicks in and tries again. You batch process lists using the `list_subscribers` tool. Your agent pulls the current audience, compares it against your database, and conditionally updates only the profiles that actually changed.

Provision webhooks dynamically

Setting up event listeners requires the `create_webhook` tool. Your Mastra AI agent registers new endpoints dynamically through this MCP server when you deploy a fresh environment. If an endpoint breaks, the workflow queries `list_webhooks` to find the stale connection and removes it with `delete_webhook`. This keeps your event architecture clean without human intervention.

Audit campaigns and automations

The `get_campaign` tool pulls specific broadcast metrics into your analytics pipelines. You set up a scheduled Mastra AI run to fetch these numbers every morning. To monitor automated flows, the `list_automations` tool grabs active triggers like abandoned carts. You combine this with `get_account_info` to verify you have enough messaging credits before a major holiday sale.

Setup guide

Set up Postscript MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Postscript tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "postscript-mcp-client",
  servers: {
    "postscript-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Postscript Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Postscript tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Postscript transactions"
);
console.log(result.text);

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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 Mastra AI

Initialize the MCPClient with your server URL and call `listTools()`. Spread those directly into your agent's tool array.

Yes. The framework automatically retries failed `update_subscriber` calls. You configure the backoff strategy directly in your workflow definition.

You enforce this in your client. Set `requireToolApproval` on tools like `create_subscriber` so a manager signs off before the agent alters the list.

The agent runs `list_keywords` to fetch active opt-in phrases. You pipe that data into a conditional branch to determine which campaign triggers next.

The integration processes raw phone numbers, opt-out states, and SMS delivery metrics. Vinkius secures these operations inside an ephemeral V8 Isolate, meaning your MCP Server forgets the data the second the workflow finishes.

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