How to Use the Substack MCP in Vercel AI SDK
Stream real-time Substack data updates into your UI using ai-sdk.
Works with every AI agent you already use
…and any MCP-compatible client
Connect Substack MCP to Vercel AI SDK
Create your Vinkius account to connect Substack to Vercel AI SDK — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.
Gemini
Key Capabilities
Live Data Streams from the MCP Server
You can stream a live feed of post metadata, like titles and IDs, as they appear. When you call `list_posts`, your agent doesn't wait for a single chunk; it shows the data coming in real time. This makes building user-facing products that feel snappy and responsive.
Checking Substack Performance Metrics
Need to know how well a piece did? Using `get_post_stats` lets you pull readership numbers immediately into your interface. You'll see the views, reads, and engagement metrics pop up without hitting a loading spinner. This is critical for building dashboards where data must appear instantly.
Managing Substack Subscribers in Real-Time
When you need to display subscriber counts or check metadata, `list_subscribers` handles it live. You'll get a list of subscribers that updates as your agent processes the data stream. This is essential if you're building a paid membership dashboard using ai-sdk.
Set up Substack MCP in Vercel AI SDK
Prerequisites
- Node.js 18+ and a TypeScript project
-
ai+@modelcontextprotocol/sdkpackages - Active Vinkius subscription with a valid endpoint token
- 1
Install dependencies
Run
npm install ai @modelcontextprotocol/sdkplus your preferred model provider (e.g.@ai-sdk/openai). - 2
Create the Streamable HTTP transport
Use
StreamableHTTPClientTransportwith your Vinkius endpoint URL. Replace[YOUR_TOKEN_HERE]with your token from cloud.vinkius.com. - 3
Discover and use tools
Call
mcpClient.tools()to auto-discover all Substack tools. Pass them directly togenerateText()orstreamText()— no manual schema definitions needed. - 4
Works with any model provider
Swap
openai("gpt-4o")for any AI SDK provider — Anthropic, Google, Mistral. The MCP tools work identically across all supported models.
import { experimental_createMCPClient as createMCPClient } from "ai";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";
const transport = new StreamableHTTPClientTransport(
new URL("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
);
const mcpClient = await createMCPClient({ transport });
const tools = await mcpClient.tools();
const { text } = await generateText({
model: openai("gpt-4o"),
tools,
prompt: "List recent Substack transactions",
});
console.log(text);
await mcpClient.close();Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Substack. 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.
Why Choose Vinkius
Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.
Real-time monitoring
Live
visibility into every interaction
Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.
Built-in savings
60%
lower AI costs
Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.
Single dashboard
One
place for every integration
Every tool your AI connects to, managed from a single screen. One account, complete control.
Common questions about Substack MCP in Vercel AI SDK
Use it with your favorite AI tools
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