How to Use the Fusebill (Enterprise Subscription Billing API) MCP in Vercel AI SDK

Q: How do I use the Fusebill (Enterprise Subscription Billing API) with the Vercel AI SDK to find a customer?

You'll use createMCPClient to connect to the MCP server. Then, pass the getcustomer tool to generateText. The AI SDK handles the call and streams the customer's details right back into your UI.

Q: Can I build a self-service cancellation flow with Fusebill (Enterprise Subscription Billing API) and the Vercel AI SDK?

Yes. You can expose the cancelcustomer tool to your agent. When a user confirms cancellation in your UI, the agent makes the call and you can stream the confirmation status back to them in real-time.

Q: What's the best way to list all active subscriptions using the Fusebill (Enterprise Subscription Billing API) and the Vercel AI SDK?

Call the listsubscriptions tool and apply a filter for active status. The AI SDK will stream the list of subscriptions, allowing you to populate a UI table or list as the data is fetched, not after.

Stream Fusebill billing data directly into your Next.js app with the Vercel AI SDK. No more loading spinners.

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Connect Fusebill (Enterprise Subscription Billing API) MCP to Vercel AI SDK

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Setup Fusebill (Enterprise Subscription Billing API) with Vercel AI SDK

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Build Live Customer Dashboards

Let users see their subscription details appear in real-time. Call `get_customer` or `get_subscription` and the Vercel AI SDK streams the data directly into your React components. Your UI updates field-by-field, not after some spinner finishes. This is how you build a self-service portal where a user can find their account with `list_customers` and see all their billing info instantly. It feels fast because it is. This MCP server makes it simple.

Instant Account Management with the AI SDK

Connect the Fusebill MCP Server and your agent can create accounts on the fly. When a user signs up in your app, your agent calls `create_customer` and then `activate_customer`. The Vercel AI SDK streams the results back, confirming the new account status right in the UI. You can build an entire onboarding flow this way, with the agent handling the backend calls and the frontend reflecting every change as it happens.

Display Filterable Subscription Lists

Pulling long lists of data doesn't have to be slow. Use the `list_subscriptions` tool with pagination and filtering. The Vercel AI SDK will stream the results, so your tables and lists populate as the data arrives. This is perfect for admin panels where you need to quickly search and sort through thousands of subscriptions. The data appears on screen immediately, giving you a responsive interface that's connected to a powerful backend.

Setup guide

Set up Fusebill (Enterprise Subscription Billing API) MCP in Vercel AI SDK

Prerequisites

Node.js 18+ and a TypeScript project
ai + @modelcontextprotocol/sdk packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies

Run npm install ai @modelcontextprotocol/sdk plus your preferred model provider (e.g. @ai-sdk/openai).
2

Create the Streamable HTTP transport

Use StreamableHTTPClientTransport with 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 Fusebill (Enterprise Subscription Billing API) tools. Pass them directly to generateText() or streamText() — 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.

index.ts

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 Fusebill (Enterprise Subscription Billing API) transactions",
});

console.log(text);
await mcpClient.close();

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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 Fusebill. 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 Fusebill (Enterprise Subscription Billing API) MCP in Vercel AI SDK

You'll use `createMCPClient` to connect to the MCP server. Then, pass the `get_customer` tool to `generateText`. The AI SDK handles the call and streams the customer's details right back into your UI.

Yes. You can expose the `cancel_customer` tool to your agent. When a user confirms cancellation in your UI, the agent makes the call and you can stream the confirmation status back to them in real-time.

Call the `list_subscriptions` tool and apply a filter for active status. The AI SDK will stream the list of subscriptions, allowing you to populate a UI table or list as the data is fetched, not after.

Yes, your connection to the Vinkius MCP Server is handled over HTTPS with a single endpoint token. Vinkius manages the server in a sandboxed, ephemeral environment for you.

This server only accesses Fusebill customer and subscription data. It touches information like customer names, emails, and subscription statuses. All data is passed through a zero-trust, ephemeral environment and is never stored by Vinkius.

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