Focus NFe MCP Server for Vercel AI SDK 5 tools — connect in under 2 minutes
The Vercel AI SDK is the TypeScript toolkit for building AI-powered applications. Connect Focus NFe through Vinkius and every tool is available as a typed function. ready for React Server Components, API routes, or any Node.js backend.
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Vinkius supports streamable HTTP and SSE.
import { createMCPClient } from "@ai-sdk/mcp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";
async function main() {
const mcpClient = await createMCPClient({
transport: {
type: "http",
// Your Vinkius token. get it at cloud.vinkius.com
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
});
try {
const tools = await mcpClient.tools();
const { text } = await generateText({
model: openai("gpt-4o"),
tools,
prompt: "Using Focus NFe, list all available capabilities.",
});
console.log(text);
} finally {
await mcpClient.close();
}
}
main();
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Focus NFe MCP Server
Connect Focus NFe to any AI agent and automate your Brazilian fiscal documentation — issue service invoices (NFS-e) and product invoices (NF-e), check status, cancel documents, and download XMLs via natural conversation.
The Vercel AI SDK gives every Focus NFe tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 5 tools through Vinkius and stream results progressively to React, Svelte, or Vue components. works on Edge Functions, Cloudflare Workers, and any Node.js runtime.
What you can do
- Emit NFS-e — Issue Service Invoices instantly
- Emit NF-e — Issue Product Invoices with full item details
- Consult Status — Check if a document is authorized, cancelled, or processing
- Cancel Documents — Cancel issued invoices with a justification reason
- Download XML — Retrieve the authorized XML for accounting and storage
The Focus NFe MCP Server exposes 5 tools through the Vinkius. Connect it to Vercel AI SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect Focus NFe to Vercel AI SDK via MCP
Follow these steps to integrate the Focus NFe MCP Server with Vercel AI SDK.
Install dependencies
Run npm install @ai-sdk/mcp ai @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the script
Save to agent.ts and run with npx tsx agent.ts
Explore tools
The SDK discovers 5 tools from Focus NFe and passes them to the LLM
Why Use Vercel AI SDK with the Focus NFe MCP Server
Vercel AI SDK provides unique advantages when paired with Focus NFe through the Model Context Protocol.
TypeScript-first: every MCP tool gets full type inference, IDE autocomplete, and compile-time error checking out of the box
Framework-agnostic core works with Next.js, Nuxt, SvelteKit, or any Node.js runtime. same Focus NFe integration everywhere
Built-in streaming UI primitives let you display Focus NFe tool results progressively in React, Svelte, or Vue components
Edge-compatible: the AI SDK runs on Vercel Edge Functions, Cloudflare Workers, and other edge runtimes for minimal latency
Focus NFe + Vercel AI SDK Use Cases
Practical scenarios where Vercel AI SDK combined with the Focus NFe MCP Server delivers measurable value.
AI-powered web apps: build dashboards that query Focus NFe in real-time and stream results to the UI with zero loading states
API backends: create serverless endpoints that orchestrate Focus NFe tools and return structured JSON responses to any frontend
Chatbots with tool use: embed Focus NFe capabilities into conversational interfaces with streaming responses and tool call visibility
Internal tools: build admin panels where team members interact with Focus NFe through natural language queries
Focus NFe MCP Tools for Vercel AI SDK (5)
These 5 tools become available when you connect Focus NFe to Vercel AI SDK via MCP:
cancel_document
Cancel an authorized invoice
consult_document
Consult the status and details of an invoice
download_xml
Download the authorized XML document
emit_nfe
Emit a Product Invoice (NF-e)
emit_nfse
Emit a Service Invoice (NFS-e)
Example Prompts for Focus NFe in Vercel AI SDK
Ready-to-use prompts you can give your Vercel AI SDK agent to start working with Focus NFe immediately.
"Emit a service invoice for R$500 for 'Consulting Services'."
"Cancel invoice REF-123 with reason 'Client requested cancellation'."
"Get the XML for invoice REF-123."
Troubleshooting Focus NFe MCP Server with Vercel AI SDK
Common issues when connecting Focus NFe to Vercel AI SDK through the Vinkius, and how to resolve them.
createMCPClient is not a function
npm install @ai-sdk/mcpFocus NFe + Vercel AI SDK FAQ
Common questions about integrating Focus NFe MCP Server with Vercel AI SDK.
How does the Vercel AI SDK connect to MCP servers?
createMCPClient from @ai-sdk/mcp and pass the server URL. The SDK discovers all tools and provides typed TypeScript interfaces for each one.Can I use MCP tools in Edge Functions?
Does it support streaming tool results?
useChat and streamText that handle tool calls and display results progressively in the UI.Connect Focus NFe with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
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GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
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Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect Focus NFe to Vercel AI SDK
Get your token, paste the configuration, and start using 5 tools in under 2 minutes. No API key management needed.