Focus Varejo MCP Server for Vercel AI SDK 8 tools — connect in under 2 minutes
The Vercel AI SDK is the TypeScript toolkit for building AI-powered applications. Connect Focus Varejo through Vinkius and every tool is available as a typed function. ready for React Server Components, API routes, or any Node.js backend.
ASK AI ABOUT THIS MCP SERVER
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 Varejo, 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 Varejo MCP Server
Connect Focus Varejo to any AI agent and manage your retail and telecom fiscal documentation — issue NFC-e for retail sales, NFCom for telecom services, manifest NF-e and CT-e as recipient, and list received NFS-e through natural conversation.
The Vercel AI SDK gives every Focus Varejo tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 8 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 NFC-e — Issue Consumer Invoices for retail point-of-sale transactions
- Emit NFCom — Issue Communication/Telecom Service Invoices
- Manifest NF-e — Acknowledge or confirm invoices issued against your CNPJ
- Manifest CT-e — Acknowledge transport documents as recipient
- Consult Status — Check authorization and status of NFC-e and NFCom
- List Received NFS-e — View all service invoices received by your company
The Focus Varejo MCP Server exposes 8 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 Varejo to Vercel AI SDK via MCP
Follow these steps to integrate the Focus Varejo 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 8 tools from Focus Varejo and passes them to the LLM
Why Use Vercel AI SDK with the Focus Varejo MCP Server
Vercel AI SDK provides unique advantages when paired with Focus Varejo 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 Varejo integration everywhere
Built-in streaming UI primitives let you display Focus Varejo 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 Varejo + Vercel AI SDK Use Cases
Practical scenarios where Vercel AI SDK combined with the Focus Varejo MCP Server delivers measurable value.
AI-powered web apps: build dashboards that query Focus Varejo in real-time and stream results to the UI with zero loading states
API backends: create serverless endpoints that orchestrate Focus Varejo tools and return structured JSON responses to any frontend
Chatbots with tool use: embed Focus Varejo capabilities into conversational interfaces with streaming responses and tool call visibility
Internal tools: build admin panels where team members interact with Focus Varejo through natural language queries
Focus Varejo MCP Tools for Vercel AI SDK (8)
These 8 tools become available when you connect Focus Varejo to Vercel AI SDK via MCP:
cancel_nfce
Cancel NFC-e
consult_nfce
Consult NFC-e status
consult_nfcom
Consult NFCom status
emit_nfce
Emit NFC-e for retail sales
emit_nfcom
Emit NFCom for Telecom services
list_received_nfse
List NFS-e received by the company
manifest_cte
Manifest CT-e as recipient
manifest_nfe
Manifest NF-e as recipient (Ciência, Confirmação, etc)
Example Prompts for Focus Varejo in Vercel AI SDK
Ready-to-use prompts you can give your Vercel AI SDK agent to start working with Focus Varejo immediately.
"Emit an NFC-e for a sale of R$89.90."
"Manifest NF-e 3523010000000000000055001000001000 as confirmed."
"List all service invoices received by CNPJ 12.345.678/0001-00."
Troubleshooting Focus Varejo MCP Server with Vercel AI SDK
Common issues when connecting Focus Varejo to Vercel AI SDK through the Vinkius, and how to resolve them.
createMCPClient is not a function
npm install @ai-sdk/mcpFocus Varejo + Vercel AI SDK FAQ
Common questions about integrating Focus Varejo 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 Varejo with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
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 Varejo to Vercel AI SDK
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.