Building an Advanced AI Workflow Automation with Next.js and DataSpeck

What We’re Building

In this tutorial, we will build an advanced AI-driven workflow automation system. We will use DataSpeck—a cutting-edge system introduced at CHI 2026 that leverages an AI-driven human-in-the-loop architecture to generate data transformation code dynamically. This solves the notoriously difficult problem of semantic ambiguities in large datasets.

Our finished project will be a Next.js web application that allows users to define raw data conversion tasks. The Next.js backend will securely pass this to DataSpeck to generate and execute the necessary Python transformation scripts, while surfacing a frontend UI for human review and refinement.

Note: As DataSpeck recently debuted as a research prototype, the API endpoint URLs in this tutorial are illustrative. Please adjust the URLs according to your specific local deployment or enterprise access portal.

Setup and Installation

First, bootstrap a modern Next.js environment and install the necessary HTTP client for our server-side communications.

npx create-next-app@latest dataspeck-automation
cd dataspeck-automation
npm install axios

Securely configure your environment variables. Never expose your DataSpeck API key to the client browser. Create a .env.local file in your root directory:

# .env.local
DATASPECK_API_KEY=sk-ds-your_secure_api_key_here

Step 1: The Client-Side UI (React Server Components)

Because we are using the Next.js App Router, components default to Server Components. To handle user state and button clicks, we must explicitly declare our interface as a Client Component using the "use client" directive.

'use client';import { useState } from 'react';
import axios from 'axios';export default function DataConversionInterface() {
const [inputData, setInputData] = useState('');
const [conversionResult, setConversionResult] = useState(null);
const [isLoading, setIsLoading] = useState(false);const handleConvert = async () => {
setIsLoading(true);
try {
// Calls our secure Next.js Route Handler, not the external API directly
const response = await axios.post('/api/convert', { data: inputData });
setConversionResult(response.data);
} catch (error) {
console.error('Error converting data:', error);
} finally {
setIsLoading(false);
}
};return (
<div className="p-6 max-w-2xl mx-auto">
<h1 className="text-2xl font-bold mb-4">DataSpeck Conversion Hub</h1>
<textarea
className="w-full p-4 border rounded"
rows="6"
value={inputData}
onChange={(e) => setInputData(e.target.value)}
...
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