How to Use the PIS/COFINS Tax Calculator MCP in Vercel AI SDK
Build real-time Brazilian tax calculators into your app with the Vercel AI SDK. No loading spinners.
Works with every AI agent you already use
…and any MCP-compatible client
Connect PIS/COFINS Tax Calculator MCP to Vercel AI SDK
Create your Vinkius account to connect PIS/COFINS Tax Calculator 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 Tax Liability Display
This MCP lets you model PIS/COFINS tax liabilities live in your UI. Instead of making your users wait, you can stream results from `calculate_cumulative_tax` directly into your React or Svelte components. When a user adjusts their gross revenue in a form field, the tax calculation updates on the screen instantly. It’s the difference between a static report and an interactive financial model. This is how you build tools that help people actually understand their tax burden.
Interactive Regime Modeling
The real money is in choosing the right tax regime. Use the `evaluate_regime_comparison` tool to show users the breakeven point between cumulative and non-cumulative systems. Hook it up to a slider for deductible costs and let them see the financial impact in real time. This isn't a theoretical exercise. You're giving your users a way to make a multi-million dollar decision with confidence, right from their browser. Run the numbers first, and let the data make the case.
Calculate Complex Tax Credits with this MCP Server
The non-cumulative regime is all about input credits. Use `calculate_non_cumulative_tax` to show the net tax liability after accounting for all deductible inputs. Your AI client sends the revenue and credit data; this MCP handles the complex Brazilian tax logic. Forget building and maintaining your own tax engine. You can build a user-facing calculator in an afternoon that's more accurate than the spreadsheets most companies use. Let that sink in.
Set up PIS/COFINS Tax Calculator 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 PIS/COFINS Tax Calculator 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 PIS/COFINS Tax Calculator 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 PIS/COFINS Calculator. 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 PIS/COFINS Tax Calculator MCP in Vercel AI SDK
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