How to Use the Percy MCP in Vercel AI SDK
Let your Vercel AI SDK app stream visual test results from the Percy MCP Server directly to your users in real time.
Works with every AI agent you already use
…and any MCP-compatible client
Connect Percy MCP to Vercel AI SDK
Create your Vinkius account to connect Percy 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 UI diff streaming with Vercel AI SDK
The `list_snapshots` tool fetches the latest visual states from Percy so your Vercel AI SDK application can render UI diffs on the fly. Your users see snapshot names, review states, and diff percentages populate their screens instantly while the edge function executes. By feeding `get_snapshot_details` directly into streamText, you bypass slow loading states entirely. This setup makes visual regression data immediately actionable for developers viewing their deployment dashboards.
Instant visual approvals from your frontend
The `approve_snapshot` tool updates the visual baseline on Percy directly from your custom Vercel AI SDK interface using this MCP Server. When a developer reviews a changed component, your interface triggers this tool to mark the snapshot as visually correct without leaving the deploy log. You can also call `approve_build` to green-light an entire test run when all changes are intentional. This speeds up production releases by letting engineers sign off on visual updates inside their custom chat interface.
Cross-browser test tracking on the edge
The `list_browsers` tool queries all supported browser families on Percy to show you exactly where your UI is being tested. Your Vercel AI SDK app maps these browser targets against live test runs to catch cross-browser layout bugs before they hit production. Combining this with `list_comparisons` gives your edge-rendered dashboard a clear breakdown of pixel-level differences across Chrome, Firefox, and Safari. You get direct URLs to diff images and raw percentages streamed straight to the client.
Set up Percy 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 Percy 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 Percy 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 Percy. 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 Percy MCP in Vercel AI SDK
Use it with your favorite AI tools
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