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Code at the speed of thought.

The most helpful AI programming assistant on the planet. Now a part of Lobby Studio.

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Your next big idea doesn't have to be a big commitment.

Streamline the development process so you can focus on innovation and bringing your vision to life.

import express, { Request, Response } from "express";
import cors from "cors";
import { json } from "body-parser";

const app = express();


// User CRUD stubs
app.get("/products", (req: Request, res: Response) => {
res.status(200).json({ message: "Get all products" });

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
console.log(`Server is running on port ${PORT}`);
Prompt generate an express server with a list products stub

Scaffold your project

Speed up the early stages of your project by generating the most common files and folders in seconds.

Any language

Whatever you're using, we've got you covered with over 20 of the most popular languages.

A library of libraries

The most popular packages and libraries work out of the box with zero configuration.

app.get("/products", async (req: Request, res: Response) => {
const page = req.query.page ? parseInt(req.query.page as string) : 1;
const limit = req.query.limit ? parseInt(req.query.limit as string) : 10;
const offset = (page - 1) * limit;

try {
const result = await pool.query(
"SELECT * FROM products ORDER BY id LIMIT $1 OFFSET $2",
[limit, offset]
} catch (error) {
res.status(500).json({ error: error.message });
Prompt list products from postgres with pagination

Implement core logic

Rapidly build complex, rich features with a few keystrokes. It's the easiest way to ship features your customers will love from day one.

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract BasicERC721 is ERC721, ERC721URIStorage {
using Counters for Counters.Counter;
Counters.Counter private _tokenIds;

constructor() ERC721("BasicERC721", "B721") {}

function mint(address to, string memory tokenURI) public returns (uint256) {

  uint256 newItemId = _tokenIds.current();
Prompt create a basic ERC721 with tokenUri contract

Web3 is one command away

Generate tokens, NFTs, smart contracts, and more with Solidity support included in every subscription.

“After installing Lobby Code, it has promptly become a daily driver. The amount of mental energy it saves me on debugging allows me to be more creative, thoughtful, and intentional with my work. Plus, it's an exceptional tool for picking up new languages and frameworks through immersion.”
Liz Giesbrecht, Software Engineer

Pair program with the best engineer in the world.

Build new features, fix bugs, and improve your codebase with an AI engineering companion

const createSubscription = async (customerId: string) => {
try {
const subscription = await stripe.subscriptions.create({
customer: customerId,
items: [
    price: "price_1234567890", // Replace with the actual price ID for $99 per month

return subscription;
} catch (error) {
console.error("Error creating subscription:", error);
throw error;
Prompt charge the customer $99 per month

Deliver value faster

Context-aware and intelligent code suggestions help you focus on shipping features for your customers.

Outperform the competition

Delivering features faster than your competitors means you can win more contracts.

Integrate with everything

Our in-built library of plugins and packages makes it easy to integrate with every partner you can dream of.

const addItem = () => {
const newNumber = Math.floor(Math.random() * 10);
setNumbers([...numbers, newNumber]);

// Bug: When removing an item, it always removes the first item instead of the clicked one
const removeItem = (index: number) => {
const newNumbers = numbers.filter((_, i) => i !== 0);

// Corrected removeItem function
const removeItem = (index: number) => {
const newNumbers = numbers.filter((_, i) => i !== index);
Prompt explain the bug in a comment / refactor removeItem to fix the bug

Detect bugs sooner

Scan your codebase for bugs and security vulnerabilities before they become a problem. Lobby Code will even suggest fixes.

// Refactored calculateTotal function
function calculateTotal(items: any[]) {
return items.reduce((total, item) => {
if (item.type === "product") {
return total + item.price * item.quantity;
} else if (item.type === "discount") {
return total - item.amount;
} else if (item.type === "tax") {
return total + item.rate * total;
return total;
}, 0);
Prompt refactor calculateTotal

Refactor effortlessly

Seamlessly identify and make necessary changes to improve code quality, without detracting from your core development tasks.

“As a novice developer, Lobby Code has provided an ecosystem that really facilitates learning. I appreciate the ability to evaluate my code in real time, offer suggestions, and keep it clean. I would definitely recommend it for any developers looking to supercharge their efforts.”
Ron Rivers, Author

Now you can code as fast as you can think.

Construct complex business logic with ease. Lobby Code will suggest the best way to implement your ideas.

package main

import (


const secretKey = "your-secret-key"

func main() {
// Create a new token object
token := jwt.New(jwt.SigningMethodHS256)

// Set claims
claims := token.Claims.(jwt.MapClaims)
claims["sub"] = "1234567890"
claims["name"] = "John Doe"
claims["admin"] = true
claims["iat"] = time.Now().Unix()
claims["exp"] = time.Now().Add(time.Hour * 72).Unix()

// Sign and get the complete encoded token as a string
tokenString, err := token.SignedString([]byte(secretKey))
if err != nil {
  fmt.Println("Error signing token:", err)
fmt.Println("Signed JWT:", tokenString)
Prompt sign a jwt in golang

Reduce feedback cycles.

Spend less time waiting for feedback and more time building the next big thing.

2x more lines of code

Code generation handles the grunt work so you can focus on solving the important problems.

No docs? No problem.

Generate code with the most popular libraries and frameworks in no time.

async fn new_user_signup(email: &str, plan_id: &str) -> Result<Subscription, Box<dyn std::error::Error>> {
let client = Client::new();
let stripe_client = StripeClient::new(STRIPE_API_KEY.to_string());

// Create a new Stripe customer
let mut customer_params = Customer::create();
customer_params.email = Some(email.to_string());
let customer = stripe_client.customers().create(customer_params).await?;

// Create a subscription for the new customer with a free trial period
let mut subscription_params = Subscription::create();
subscription_params.customer = Some(customer.id);
subscription_params.plan = Some(plan_id.to_string());
// Configure the trial period (e.g., 30 days)
subscription_params.trial_period_days = Some(30);
let subscription = stripe_client.subscriptions().create(subscription_params).await?;

Prompt implement new user signup with free trial using stripe

Build complex flows in seconds

Create complex and robust multi-step algorithms with ease. The days of uncaught runtime errors are over.

const ProductListing: React.FC = () => {
return (
<div className="grid grid-cols-1 gap-8 md:grid-cols-2 lg:grid-cols-3">
{products.map((product) => (
  <div key={product.id} className="p-4 bg-white rounded-lg shadow">
    <img className="w-full h-64 mb-4 rounded-lg" src={product.imageUrl} alt={product.name} />
    <h3 className="text-xl font-semibold">{product.name}</h3>
    <p className="mb-4 text-gray-500">{product.description}</p>
    <div className="flex justify-between">
      <span className="font-semibold">${product.price.toFixed(2)}</span>
      <button className="px-4 py-2 text-white bg-indigo-600 rounded-md">Add to Cart</button>
Prompt generate a product listing page from an array of products

Build UI effortlessly

Lobby Code is context aware, so you can build data-centric UI components using the UI frameworks you're already using.


Experimentation is the mother of innovation. Do both more.

Shipping often is a key indicator of product success. With Lobby Code, you can iterate and ship more often.

const SortableTable: React.FC = () => {
const [sortedData, setSortedData] = useState<DataType[]>(data);
const [sortKey, setSortKey] = useState<"id" | "name" | "age">("id");

useEffect(() => {
const sorted = [...sortedData].sort((a, b) => {
if (a[sortKey] < b[sortKey]) return -1;
if (a[sortKey] > b[sortKey]) return 1;
return 0;
}, [sortKey]);

return (
<table className="w-full border-collapse">
      className="px-4 py-2 border cursor-pointer"
      onClick={() => setSortKey("id")}
      className="px-4 py-2 border cursor-pointer"
      onClick={() => setSortKey("name")}
  {sortedData.map((item) => (
    <tr key={item.id}>
      <td className="px-4 py-2 border">{item.id}</td>
      <td className="px-4 py-2 border">{item.name}</td>

Prompt add sort headers to my react table

Improve quality of life without giving up yours.

Ship the features your customers will love in a fraction of the time so you can get your time back.


Lobby Code is aware of the project you're working in so you can focus on the problem at hand together.

Compounding effects

As you keep using Lobby Code to build your project, it gets smarter about the features you have and what you are trying to build.


Automate automated testing.

Sleep better at night knowing your tests are always up to date with your codebase, and that important cases are covered.

const sum = (a, b) => a + b;

describe('sum', () => {
test('should return the correct sum of two positive numbers', () => {
const result = sum(2, 3);

test('should return the correct sum of two negative numbers', () => {
const result = sum(-2, -3);

test('should return the correct sum of a positive and a negative number', () => {
const result = sum(3, -2);

test('should return 0 when both numbers are 0', () => {
const result = sum(0, 0);
Prompt write unit tests in jest for sum()

Less testing, more doing.

Past a certain point, manual testing every corner of your app is untenable. Lobby Code will help you automate the most important parts of your app.

Smart testing

Lobby Code writes unit and integration tests to make sure your code works top to bottom.

Testing frameworks

Lobby Code works with the most popular frameworks so you can focus on turning those tests green.


Modify legacy code painlessly.

Old code? No problem. Lobby Code will help you understand and modify legacy code with ease.


01 WS-HTTP-RESULT   PIC X(4096).
01 WS-URL           PIC X(100)   VALUE "https://api.openai.com/v1/engines/davinci-codex/completions".
01 WS-CONTENT-TYPE  PIC X(50)    VALUE "application/json".

*> Initialize and configure the HTTP request
      DISPLAY "Error opening HTTP connection"
      STOP RUN

*> Send the API request with the required data (replace with your prompt and other parameters)
CALL 'C$HTTPPost' USING '{"prompt": "Write a simple COBOL program"}'
      DISPLAY "Error posting data"
      STOP RUN

*> Close the HTTP connection
      DISPLAY "Error closing HTTP connection"
      STOP RUN

*> Display the API response

Prompt use COBOL to query openai

Legacy doesn't have to be a four letter word.

All code becomes legacy at some point. With Lobby Code, you can rest assured that even the most spaghetti code can be unfurled.

Old languages

Try using Lobby Code on older languages like Lisp, BASIC, and COBOL.

Respect fragility

Lobby Code can back-fit new code into old call signatures to make sure nothing breaks in migration.

Starting at $99/month.

Bundle pricing is available for teams and companies.