All use cases
Book flights and hotels, stopping at payment for approval
Claude Cowork drove the browser through Claude in Chrome to book 8 flights and 5 hotels, filling traveler details and seats and pausing at payment for approval.
Book flights as a travel agent (came close)
Debbie O'Brien had Grok Bot try to book flights; it came close but missed the last step, so the booking wasn't completed.
Book flights, hotel and rental car
Grok Bot booked flights, a hotel and a rental car as part of handling the user's life admin, alongside email management.
Book flights with AI trip planners
A blog tested five AI trip planners on completing flight bookings; Kayak's agent finished through its own checkout, while ChatGPT Operator only partly completed bookings via form-filling and needed manual cancellation.
Book flights with credits and manage reservations
A user had Muse use unused Southwest credits to book a flight, watch for better seats, handle OpenTable reservations and keep a trip dashboard for a visiting friend.
Book flights with seat selection and traveler numbers
Muse booked flights for Cyrus and his wife end to end on Amex Travel, including seat selection plus loyalty and TSA numbers.
Book hotel rooms across booking engines
Manus was tested on 11 hotel booking engines and got through date and room selection on 8, but handed back at payment details so no booking was completed.
Book restaurant tables via OpenTable and Resy
In a hands-on test, Claude showed Resy availability but could not book, and ChatGPT's agent clicked through OpenTable but set the wrong party size.
Book restaurants and a hotel dinner in Japanese
Muse booked every restaurant for a Japan trip and went back and forth in Japanese with the Hakone hotel to secure a dinner slot not on the website.
Book restaurants and snipe campsites and tickets
Grok Bot read calendars, picked a time and booked a restaurant; roundup also lists watching recreation.gov, ReserveCalifornia and AMC ticket drops.
Book restaurants, research and build sites with ChatGPT Dots
The author tested Dots on a restaurant booking, research and site-building; booking completed slowly, research and building were useful, calling failed.
Book tickets, rides and services via Alexa+
A reporter linked OpenTable, Ticketmaster, Uber and Thumbtack to Alexa+ for booking, but found it beta-like, error-prone and sometimes not hearing them.
Book travel and find restaurant reservations
Claude books flights and hotels in a company travel system, and a prompt finds top-rated restaurants, identifies their reservation systems and checks Saturday 6pm availability for two.
Book tutoring appointments over WhatsApp
An agency owner built a WhatsApp agent for a tutoring company that books calendar appointments, shipped in two days for a $5K fee.
Book weekly restaurants and surface daily discoveries from your data
An OpenClaw agent with access to ChatGPT, Google and Instagram history books weekly restaurants, sends daily recommendations, and proposes memory updates for the user to approve.
Build a 12-day homeschool curriculum from PDFs
Cowork read 12 PDFs of worksheets and reading material, organized them by subject and built a 12-day curriculum to the requested schedule.
Build a 2D platformer game without coding
A content creator with no coding experience used Claude Code to build a black-and-white wave-combat platformer in HTML canvas and played it live.
Build a 3D Blender model from a concept image
The author pasted a concept image of a Fabergé egg and had a coding agent use a local Blender skill to create a Blender model of it.
Build a 3D browser game in 24 hours
A developer used Replit's agent to build a 3D browser game entirely in the browser with no local setup.
Build a 52-node n8n workflow
Claude computer use built a 52-node n8n workflow in one afternoon that would normally take three weekends.
Build a balloon-camel simulator for an LED Burning Man totem
Author used ChatGPT for reference images and Claude Code to build a Go balloon physics simulator with a web frontend, with Claude looping on screenshots and camera control.
Build a bare-bones Windows VNC client from an email brief with Claude
The author emailed Claude a spec for a minimal VNC viewer targeting Windows 10 over a local SSH tunnel, to be built on a Mac and delivered with a checksum.
Build a benchmark image collage in Canva
The author had ChatGPT Agent log into Canva and build a collage of benchmark results; after over 75 minutes the result was poor as it fumbled the interface and drew shapes in Python.
Build a book donation app and demo video in a buildathon
A user used Replit Agent to build the GiveABook app and its demo video within a 24-hour buildathon.
Build a booking and payment app for tattoo artists
A former programmer used Replit Agent over a weekend to build a booking app with calendar, Google OAuth, Stripe deposits and notifications, though time zones and UI needed back-and-forth.
Build a browser 4X strategy game with LLM coding help
The poster built the browser 4X game Hexwardia in two weeks using Grok and Gemini to write the combat engine, fog-of-war, map generation and heuristic AI.
Build a browser game and train an agent to play it
Grok built the browser game Roofline, then trained a PPO agent that plays the live page, reaching a best score of 39,359.
Build a budgeting app from a single prompt
A low-coder used Replit Agent to build a 'Budget Buddy' with category budgets, a spending dashboard and expense log in about 20 minutes, using half their monthly credits.
Build a buy-order imbalance scanner with Replit Agent
A commenter says Replit's agent built a working scanner for buy order imbalances using demo credits.
Build a C compiler with a team of parallel agents with Claude
Anthropic's engineering write-up on tasking Opus 4.6 agent teams with building a C compiler.
Build a charting tool from blood test PDFs with Claude
Matt Stockton gave Claude his MyChart blood test PDFs and it produced a web app charting results over time and flagging abnormal values in about five minutes.
Build a chess game against a language model
An early tester asked Devin to build a chess game against a language model; it made good progress but eventually hung.
Build a Chrome extension for presenting webinars
A Replit forum user built a Chrome extension so they could keep notes in view while presenting webinars, and published it to the Chrome Web Store.
Build a clinic app with booking and trackers
A doctor with no coding experience used Replit to build a clinic app in 5 days with booking integration, prescription requests, health trackers and an AI symptom checker.
Build a consultancy-style deck from a vague prompt
The author had Manus Slides research sources and build a 16-slide outline on 2025 generative AI trends in UK English.
Build a custom agent to search Cyprus villa rentals
Marc Lou built an agent that combined public real estate data with air quality, water, noise and landslide data into an Airbnb-style interface for villas.
Build a deals page step by step with Devin
An engineer had Devin implement a deals page in steps; it opened a PR in under 10 minutes, but CI failed, it added unnecessary changes and gave a false answer about a library.
Build a dramatic digital envelope app for asking friends for money
Used Replit Agent and Design Mode to build an app with decoy messages, drum rolls and live status tracking for a buildathon.
Build a first real project with Replit Agent
A student completed a real build with Replit Agent, spending about $65 in agent usage and finding the cost unexpected.
Build a full ad campaign from a client's website
An agent scraped a client's site, built a multilingual ad campaign with keywords, copy and tracking plan, and flagged a conversion problem.
Build a full CRM with email, video and calendar
A community member used Replit Agent over a couple of weeks to build a CRM with email integration, video sales letter recording and meeting scheduling.
Build a full web app with database, storage and landing page
The author used Replit Agent to build a Postgres-backed web app with image storage, analytics and a landing page; an S3 switch failed and was reverted.
Build a game level from a design document
The poster had Grok 4.5 build a level of an existing Three.js game from a detailed game design document, followed by some manual cleanup.
Build a Great Gatsby lesson plan in a spreadsheet
Ethan Mollick had Claude computer use build a high school Great Gatsby lesson plan with Common Core-aligned assignments in one spreadsheet.
Build a grocery cart from purchase history
Instacart's AI assistant built a 27-item cart from the shopper's purchase history, turned dinner ideas into carts and flagged unavailable items.
Build a health plan from genetic and bloodwork data
Farzad gave Claude Code his raw 23andme file, bloodwork, artery scans and supplement routine, and a 2-hour conversation produced a tailored health and genetic plan.
Build a homepage from Figma designs via MCP
The author connected Figma to Cursor over MCP to build a new homepage for a font archive, with great results after Lovable disappointed.
Build a household dinner-suggestion app
A non-coder used Codex to build a local app that suggests dinners from pantry stock, garden produce, diets, appliances and weather.
Build a match-3 game from a single prompt
An author prompted Gemini 3 Pro once to produce a working Candy Crush-style game with a shareable link, and says a non-technical friend did too.
Build a medication reminder pill dispenser that alerts caregivers
A how-to guide for an OpenClaw agent on a Raspberry Pi pill dispenser that logs doses, adjusts reminders, confirms dispensing by camera and alerts caregivers on missed doses.
Build a mental models framework with a multi-agent dev team with Claude
A solo founder used Claude, ChatGPT, Windsurf and Cursor as role-based team members to design, test and deploy a 120-model mental-models framework and MCP server.
Build a minigame collection in a day
A data professional drafted a prompt with ChatGPT and used Cursor agent mode to build a Python tkinter game with four minigames.
Build a mobile app turning photos and voice into reminders
The poster built Loopi, an app that turns photos, text and voice into reminders, notes and expenses, in about 45 days using Replit and AI agents.
Build a multi-tenant SaaS with an agent
The poster built a production multi-tenant SaaS in 15 days with Replit Agent, but hit issues like RLS bypasses and production pointing at the dev database, so checking its work was essential.
Build a multilingual typing app for language learning
A buildathon participant used Replit Agent for the first time to create LingoType, a typing app for mastering new languages.
Build a name-and-face quiz site from a spreadsheet
Scott Wu had Devin build and deploy a mobile-friendly React quiz from a TSV of speaker names and photos, plus a QR-code site to share it.
Build a newsletter and podcast site with Replit
A creator got a clickable prototype in 10 minutes but spent 10+ hours failing to put it on a custom URL, until Val Town staff helped launch the MVP.
Build a newsletter performance dashboard without coding
A non-coding media operator had Claude Code build a dashboard tracking newsletter performance across a network in about 30 minutes; a solo CFO built an expense system.
Build a newsletter-to-social content agent (it failed)
The author built a content agent to research, write and schedule social posts, but it invented statistics, so they rebuilt it as a structured workflow.
Build a paid ad campaign from scraped brand and competitor data
An agent scraped a jewelry brand's site for SKUs and social media for buying patterns, analyzed competitor ads, and generated a paid campaign with image and video concepts.
Build a personal assistant for email, briefings and planning
Marc Bara added 50+ capabilities to Hermes Agent over 15 days, including email triage, briefings, calendar planning and an MCP link to his invoice system.
Build a personal research wiki from papers and articles
Cursor Agent writes and maintains interlinked markdown pages from user-supplied sources, summarizing and cross-referencing, with Obsidian used to browse.
Build a personal tax refund calculator instead of paying a CPA
A user had Claude Code build an interactive tax calculator using 2025 tables to avoid a $300 CPA fee.
Build a phone voice agent that answers in under half a second
A from-scratch voice agent averaging about 400ms end to end, with streaming speech-to-text, LLM, and text-to-speech and clean barge-ins.
Build a Pokemon-style dog collecting app
A user had Replit Agent build a catch-em-all dog app whose rarity comes from scraped American Kennel Club regional population data.
Build a Pong game and website from scratch
A tester asked Devin to create a basic Pong-style game and a website, and it finished both in under 20 minutes.
Build a portfolio plan from brokerage exports
Claude Code read a directory of brokerage CSV exports and notes, researched funds, and produced buy, stop-buying and hold lists with a tax-loss harvesting partner fund for each.
Build a profitable online business from scratch with an agent
Poster gave an OpenClaw/Claude agent $50 and 60 days to build an online business, using content marketing on Reddit, Twitter and LinkedIn that drew 400+ visitors.
Build a project management tool with a 24-hour agent run
Ran a Cursor agent continuously for 24 hours to build a project management tool; the app fully works but is not production ready.
Build a racing game from a single prompt
Codex made a racing game with multiple racers, eight maps and items from one prompt, acting as designer, developer and QA tester by playing it.
Build a Rust game engine with spawned agents
OnXStephen had Grok Bot spawn agents that built a Rust game engine with .NET scripting, multi-threading, weather, lighting, and hot reloading.
Build a searchable map of funded companies
A software engineer had Replit Agent build a searchable map of Wefunder brick-and-mortar companies in about 3 hours for about $22.
Build a self-hosted bookkeeping and finance app
Poster used Claude over a weekend to plan and build a self-hosted app that organizes receipts for an accountant and replaces paid bookkeeping software.
Build a slide deck from a single prompt
Scout used its pptx skill to build a 5-slide quarterly cloud review deck saved to Downloads, with diagrams and HTML artifacts also covered.
Build a spending-insights app from bank transactions
Plaid describes a Replit connector that lets non-coders prompt the Replit agent to build an app reading their own bank transactions (vendor post, no named user).
Build a student survey form with Manus
Manus built a Google Form survey on undergraduates' views of AGI; the author hit a snag when asking it to fill the survey with synthesized student responses.
Build a Telegram bot that sends emails and checks calendar
Julian Goldie used Replit's agents and automations feature to build a Telegram bot that sends emails and checks his calendar, taking 28 messages; the feature is in beta and buggy.
Build a thyroid episode warning model from wearable data
Claude Code was given 9.5 years of Apple Watch and Whoop data and built an ML model that backtested as warning of a prior episode before labs confirmed it.
Build a WordPress marketing site from Figma overnight
bnistordev connected Devin to a Figma file via MCP and had it build an entire WordPress marketing site overnight.
Build a working coding agent in R from three tools
Author builds a functional coding agent in R starting from three tools, then adds tools to make it safer and more efficient.
Build Alexa routines to regulate a daily schedule
A TechRadar writer set Alexa routines to check mood and water intake at 11AM and 3PM and remind about lunch, saying it helped their day, with a warning against over-reliance.
Build an AI to-do list web app in 9 hours with Replit Agent
The poster used Replit Agent V2 to build a fully functional AI to-do list web app in about nine hours.
Build an artificial life simulator in one HTML file
Four Grok agents were asked to build an artificial life simulator with glowing particles, force sliders, and emergent behaviors.
Build an automated podcast website that creates companion resources
A podcaster built and deployed a podcast site with Replit over a weekend that automatically generates companion resources when an episode is published.
Build an e-commerce agent with OpenClaw
Poster spent 100+ hours and 200M+ tokens building an e-commerce workflow agent with OpenClaw; post focuses mostly on the build effort.
Build an email inbox app for the bot's address
Grok Bot built and deployed a mail-style inbox app on Vercel in 23 minutes, with database and sync, and sent back the link and password.
Build an Excel portfolio tracker from trade logs
Claude Code reads a trade log, writes and runs Python, pulls live Yahoo Finance data and exports Robinhood trade history to build an Excel portfolio tracker.
Build an expense and inventory tracking app
A user had Manus create an app to track their business expenses and inventory, and says it works as envisioned.
Build an explorable 3D starship with agents
A hobbyist used agents to design multiple decks of an Excelsior-class starship as a 3D explorable model and to write personalized fanfic prose around it.
Build an iCloud skill with a Muse agent
A screen-reader user asked their Muse agent to build an iCloud skill and it produced something, but accessibility problems with the text field and conversation navigation got in the way.
Build an Instacart grocery cart from a chat request with ChatGPT
A reporter connected Instacart to ChatGPT, which assembled the cart for formula, ice cream and fruit and opened a checkout confirmation in chat.
Build an Instacart list for a charcuterie board
Comet added about 20 items to an Instacart cart from ShopRite in about five minutes, choosing cheapest or bestselling items, and declined to purchase.
Build an invitation card website purely by prompting
A user built a frontend-only invitation site with animations, images and navigation for his girlfriend, giving instructions to Cursor without touching the code.
Build an invoice platform that flags anomalies
A non-developer used Replit and Claude to build an invoice platform that flags high-value invoices, sends payment reminders and catches duplicates; on 130 demo invoices it found four anomalies.
Build and balance a live Telegram RPG
A non-coding PM had Claude Code write a Telegram RPG bot, deploy it over SSH, and run tens of thousands of test fights to rebalance classes.
Build and deploy a Game of Life simulation site
In a vendor launch demo, Devin built an interactive Game of Life website, added requested features step by step, and deployed it to Netlify.
Build and deploy a Hacker News scraper app
Replit Agent generated a scraper, database models, API endpoints and front end that stores and shows Hacker News items, then deployed it.
Build and deploy a meeting app from a prompt
A user had Replit Agent create a meeting app with dashboard, logic and analytics, and deploy it live without manual code changes.
Build and deploy an app over a weekend
The author had Devin build and deploy an app, finding it quick on PR feedback but weak on legacy monorepos and costly on broad requests.
Build and grow a mobile game with bots
A guide describes six bots building, shipping and improving a mobile game, including uploading ad creatives learned from a recorded click-path.