Engineering
Agents that turn a prompt or spec into a working prototype, landing page, internal tool or full-stack app.
84 published use cases
Ran automated checks across 56 Alberta home care agency sites to measure how many lack a homepage inquiry form.
Via Bluesky · @snipeventures.bsky.social ↗Cr34te.it allows users to collaboratively rewrite a website using AI, one turn at a time, fostering creativity and innovation.
Via Hacker News · y42 ↗A web developer tests Claude Code by providing it with a website and ad budget to create personalized user experiences.
Via Hacker News · HamadMalikKhan ↗Portal and website inquiries get a personal reply with listing details and viewing slots in minutes, and every lead lands in one Sheet.
An experiment where Claude was tasked with creating and managing a business, resulting in a landing page evaluation app.
Via Hacker News · diegoaad ↗Learn how to effectively communicate with AI design tools to maintain consistency in your website's design.
Via Bluesky · @henriqueromana.com ↗An author gave the Copilot coding agent two small changes on their own site; it opened draft PRs and the spacing change was good enough to merge.
Original post ↗A user built a frontend-only invitation site with animations, images and navigation for his girlfriend, giving instructions to Cursor without touching the code.
Original post ↗Chris Wozniczek has Devin find businesses and gigs, build pre-made websites, and send tailored cold emails to sell website services.
Original post ↗A how-to guide shows Microsoft Scout driving a Playwright browser from a prompt to scrape sites, capture screenshots, fill forms and export data.
Original post ↗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.
Original post ↗OpenClaw built and shipped a live landing page, wired lead capture with duplicate protection, set up a geo-targeted Google Ads campaign and a consent-mode tag.
Original post ↗A team ran a multi-source competitor research report and a working landing page build through Manus, logging output and fixes needed.
Original post ↗A bot scans a Cursor employee's X bookmarks daily, picks a new technology, drafts a prompt, and on approval starts a Cursor Cloud agent to build a prototype in about 15 minutes.
Original post ↗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.
Original post ↗An xAI designer used bots to prototype an animated promo, build a playground from the animation spec, and handle Figma and prototype tasks.
Original post ↗The author messages an OpenClaw agent on WhatsApp to draft messages, fill forms in a browser, and research a topic then build and host an HTML prototype.
Original post ↗Arcads agents take a website URL, learn the brand, and produce ad ideas, static ads and AI UGC videos.
Original post ↗The poster used Replit Agent V2 to build a fully functional AI to-do list web app in about nine hours.
Original post ↗A user says Claude Cowork fixed their API website after another agent kept breaking it, explaining the problem and working through changes with them.
Original post ↗@JerryJenasom had Manus find car brands lacking a web app and email them; brands replied and he then built a web app for them.
Original post ↗Víctor Paytuvi had Claude computer use find and click a site's add-to-cart button on the first try after Gemini failed.
Original post ↗The poster uses Muse to shop for cars online and finds a persistent logged-in browser profile with normal pacing works best as sites start blocking it.
Original post ↗A builder made an n8n booking agent that chats with website visitors, qualifies them, and books call slots around the clock without humans.
Original post ↗An n8n workflow scrapes a website into a knowledge base, answers customer questions on WhatsApp and converts inquiries into booked calls.
Original post ↗The poster built their first app on Replit with ChatGPT help and got it approved on the App Store.
Original post ↗An agent scraped a client's site, built a multilingual ad campaign with keywords, copy and tracking plan, and flagged a conversion problem.
Original post ↗A commenter had Codex do fundamental architecture work for their game, reading engine docs and implementing better animation merging.
Original post ↗A developer's setup for automating their site's content with agents and MCP.
Original post ↗Cursor's background agent built a pricing landing page from a short spec in about 5 minutes on a new branch and opened a PR.
Original post ↗A newsletter author used Manus over three days to produce websites, interactive courses and a 318-page ebook from simple prompts.
Original post ↗An n8n workflow takes a website URL, works out industry and keywords, monitors Reddit for relevant posts and emails potential leads to the user.
Original post ↗A founder used Cursor agents to find prototype gaps, draw ASCII wireframes, and plan and implement a feature with parallel agents in worktrees.
Original post ↗A tester asked Devin to create a basic Pong-style game and a website, and it finished both in under 20 minutes.
Original post ↗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.
Original post ↗Hermes spawned sub-agents per area to scrape Northwest London plumbers lacking websites, filtered them, and returned three qualified leads with pitch angles.
Original post ↗The developer of Xenodochium built the game with Gemini, hit repeated errors, and worked around them by starting a fresh chat.
Original post ↗Claire had Codex research hotels, map them on Google Maps and deploy a trip site from her phone; its browser also navigated to checkout for an item.
Original post ↗A marketer had Manus produce a marketing plan with personas and HubSpot CRM steps, then build and deploy it as a website.
Original post ↗A podcaster built and deployed a podcast site with Replit over a weekend that automatically generates companion resources when an episode is published.
Original post ↗A review lists Devin building a full-stack to-do app, debugging a public repo with a PR, and doing Docker setup, deployment and CI/CD.
Original post ↗The author had Codex CLI read a design spec and iterated on it to design his personal site, and he can reuse the spec on other projects.
Original post ↗Claude Code with Claude in Chrome writes code, opens localhost, clicks through the UI, reads console errors and fixes them without the developer touching the browser.
Original post ↗A tool lets Claude Code drive an iOS app through the accessibility tree, tap every screen, and return a structured bug summary.
Original post ↗A 73-year-old with no coding experience built an app with Claude to track blood pressure, fluid, weight, heart rate, symptoms, meals and activity after a hospitalization.
Original post ↗Used Replit Agent and Design Mode to build an app with decoy messages, drum rolls and live status tracking for a buildathon.
Original post ↗RemainderBot uses a founder's goals and task lists to write PRs with spare Claude and Codex quota, producing 111 PRs including call prep and prototypes.
Original post ↗A commenter's Replit-built app reached about £20k in sales, and they use the agent to hunt duplications, organize code and add security like reCAPTCHA.
Original post ↗A consultant uses Manus for daily briefings, competitor monitoring, inbox triage, market mapping, and making decks, reports and websites, delegated via Telegram.
Original post ↗Commenters use Microsoft Scout to build a dashboard that persists across reboots and to document and troubleshoot support cases end to end.
Original post ↗A G2 reviewer uses Manus mostly for coding, pushing code to GitHub, which is linked to Vercel so work goes live on their website.
Original post ↗Felix Rieseberg gave Claude Cowork a folder of hospital PDFs and the insurance website so it filled out the paperwork while he fed his newborn.
Original post ↗Musk said Grok Bot bought LEGO from the LEGO website, and that users can drop a credit card photo into chat so it finds the best deal and orders; plans and safeguards weren't specified.
Original post ↗Operator played a deepfake game scoring 6/10, shopped for jeans, and compiled information about online courses from the author's website.
Original post ↗Mika Reyes set a Grok Bot routine to keep checking a Dancing with the Stars ticket website and come back with times.
Original post ↗A reviewer tested Operator on analyzing web-design posts, summarizing AI news, listing website builders with prices and screenshotting sites into a Google Doc, finding login and CAPTCHA handoffs frustrating.
Original post ↗Grok Bot built a lead list from the author's website and ICP, then drafted a Salesforge sequence for review before launch; author reports a 38% reply rate.
Original post ↗The poster built a game where Grok generates the story narration, and says it outperformed Gemini and GPT for narrative output.
Original post ↗In a workshop demo, a Manus agent scraped about 70 talks, extracted schedules, converted times to UTC, and built a dashboard with recommendations and calendar integration.
Original post ↗A developer had Claude Code migrate a legacy web app's password reset flow; it needed close supervision, drifted off task, and ended up slower than doing it by hand.
Original post ↗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.
Original post ↗A developer built an app that tracks usage across multiple Codex and Claude Code accounts and auto-hands-off conversations when one hits its limit.
Original post ↗The poster built a tool that pulls invoices from Gmail and organizes them with AI, with possible QuickBooks or Xero integration.
Original post ↗An AI chatbot deployed on a website and WhatsApp answers queries, schedules appointments, and sends reminders for a dental office.
Original post ↗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.
Original post ↗ChatGPT Agent filled in medication, dosage and number of days on a clinic's website, while the user entered sensitive data manually.
Original post ↗Karpathy's agent scanned the home network, logged into Sonos, reverse-engineered APIs, mapped lights, HVAC, shades, pool and security, and built a dashboard.
Original post ↗A platform builds website and WhatsApp support agents that answer questions and book Google Calendar appointments, plus an autopilot that scrapes Google Maps and preps outreach with demo bots.
Original post ↗An agent opened the TTD website for Tirupati, picked options, entered details and took the booking to the payment stage without human clicking.
Original post ↗Jake built a tool that lets agents like Claude or ChatGPT make phone calls to book tables, handling callback numbers mid-call.
Original post ↗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.
Original post ↗Cowork reads a folder of bank statements, finds recurring charges and builds a dashboard of active and cancelled subscriptions and monthly savings.
Original post ↗Author used ChatGPT for architecture and the Junie agent in WebStorm to build a dashboard aggregating PRs across four repos, flagging approvals, conflicts and comments, in about 3 hours.
Original post ↗Cursor's internal ChatGTM drafts signal-based outbound messages with personalized landing pages, call recap emails and follow-ups, and assembles the deal forecast.
Original post ↗In a vendor launch demo, Devin built an interactive Game of Life website, added requested features step by step, and deployed it to Netlify.
Original post ↗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).
Original post ↗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.
Original post ↗An agent loop reading a revenue dashboard ran 365 cycles, generating 394 interlinked SEO pages and a webhook inspection tool with landing page, docs and drafted outreach.
Original post ↗A toolset and docs let ChatGPT and Claude agents write LDraw source files that become LEGO CAD models, packaged as a dockerized web app.
Original post ↗The author uses a coding agent to build the game Overlands and is giving it access to the world through a dedicated agent client, where it chose a name and designed its own avatar.
Original post ↗A reviewer had Manus build a currency converter, fix a find_max bug and make a landing page, with mostly strong results.
Original post ↗Multi-agent n8n workflow finds company URLs, scrapes prospect websites and summarizes opportunities that sales teams can use to tailor outreach.
Original post ↗A dual-agent system scores landing page, cold email and pitch deck copy against strict rubrics, then rewrites it to remove fluff and unsupported claims.
Original post ↗Claude Code wrote ~2,400 lines of C++ firmware for an ESP32 e-ink fridge magnet shopping list synced with a phone web app, now used by the family.
Original post ↗Agents can scaffold and ship small apps and prototypes from a description, and coding agents can extend real codebases. The larger the project, the more it depends on good tests, clear specs and someone reviewing the changes.
Across the 84 published workflows on this page, the most used tools are Replit Agent (9), Manus (8) and Claude Code (7). Each use case lists every tool it needs and the role it plays.
Open any use case to see the tools, the step-by-step setup and example prompts you can copy. Start with a beginner workflow, run it on a small batch and review the output before you automate it fully.