How to Use the Unpaywall (Open Access Papers) MCP in Vercel AI SDK

Q: How can Unpaywall (Open Access Papers) and Vercel AI SDK check DOI status?

Simply pass the target DOI to your agent. The getarticleoastatus tool executes immediately, returning the Open Access status and potential full-text PDF links right into your streaming UI.

Get Open Access Status Results in Real Time with Vercel AI SDK.

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Connect Unpaywall (Open Access Papers) MCP to Vercel AI SDK

Create your Vinkius account to connect Unpaywall (Open Access Papers) to Vercel AI SDK 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 Unpaywall (Open Access Papers) with Vercel AI SDK

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Check OA Status Live

You pass a DOI to the server, and it runs `get_article_oa_status`. Instead of waiting for a big response payload, you see the Open Access status and PDF links appear in your UI as they resolve. This real-time stream is perfect for user feedback. The front end updates instantly when the agent finds OA data, making the experience feel fast and native.

Handling DOI Lookups

The server pulls Open Access details from millions of scholarly articles using a simple DOI lookup. This means your app doesn't need to manage complex API rate limits or data parsing itself. You just call the tool, and the MCP Server handles the heavy lifting, giving you clean results directly into your React component.

Streaming Data Results

The Vercel AI SDK supports streaming tool results. When `get_article_oa_status` runs, the data flows piece by piece. Your user sees the status update immediately—no loading spinner waiting for the whole result set. This direct stream capability is key when building complex, interactive tools that require instant feedback.

Setup guide

Set up Unpaywall (Open Access Papers) 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 Unpaywall (Open Access Papers) 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 Unpaywall (Open Access Papers) transactions",
});

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

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Common questions about Unpaywall (Open Access Papers) MCP in Vercel AI SDK

Simply pass the target DOI to your agent. The `get_article_oa_status` tool executes immediately, returning the Open Access status and potential full-text PDF links right into your streaming UI.

The tool is designed for one DOI at a time, which works great in a conversational flow. You'll call `get_article_oa_status` sequentially as the user provides multiple DOIs.

It primarily handles DOI strings. The server processes this input to retrieve Open Access status information, returning structured text containing the findings.

You can build a user-facing tool where users input DOIs. The `get_article_oa_status` tool runs, showing the OA status live in the UI, making it feel like a dedicated search feature.

This server processes DOI strings. It uses these DOIs to check against public databases for Open Access status, which is read-only operation.

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