NFE.io Node.js SDK Integration Guide

This skill enables you to write correct, production-ready code using the NFE.io SDK for Brazilian electronic fiscal documents. The SDK covers NFS-e (service invoices), NF-e (product invoices), CT-e (transportation), CFe-SAT (consumer), CNPJ/CPF lookups, tax calculation, and more.

Package & Import

The npm package name is nfe-io (not @nfe-io/sdk despite what JSDoc comments say).

// ESM (recommended)
import { NfeClient } from 'nfe-io';

// CommonJS
const { NfeClient } = require('nfe-io');

// Default export (factory function)
import nfeFactory from 'nfe-io';
const nfe = nfeFactory({ apiKey: 'your-key' });