Vibe coding use cases
Building apps, sites and tools by talking to a coding agent.
12 use cases
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43
Have a coding agent write tests for code you already have
Point a coding agent at one module, have it list what the code should do, then write tests for each behavior and run them.
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52
Let a coding agent write most new features and fix defects 10x faster
Cisco rolled out OpenAI Codex across engineering and reports it wrote over 95% of the new features in its AI Defense product. Defect-fix throughput rose 10-15x, and the company says it saves more than 1,500 engineering hours a month.
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66
Build a newsletter summarizer that cuts weekly reading to 30 minutes
Consultant Justin Tan, a self-described low-coder, used Replit Agent over three days to build an app that pulls newsletters from Gmail, removes duplicate stories, summarizes them and archives the emails. His weekly newsletter reading dropped from 2-3 hours to two 15-minute sessions.
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66
Replace a $40K CRM contract with a custom CRM built in an afternoon
Atonom, a 25-30 person AI sales company, built its own CRM in Lovable with a first working prototype in about 3 hours. It replaced a Salesforce contract, cutting annual CRM costs from $40,000 to about $1,200.
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56
Move a company website off Webflow to a fast static site in under two weeks
Very Good Ventures used Claude Code to move its site, including 204 blog posts and about 1,200 images, from Webflow to Astro on Cloudflare in under two weeks, with agents also writing and running the QA tests. StackOne reported a similar Claude Code rebuild that took new pages from days to 1-2 hours.
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56
Migrate a 22-year WordPress blog with 5,500 posts to a static Hugo site in a day
Investor Brad Feld used Claude Code to export 5,530 posts from WordPress, convert them to Hugo, keep every old URL working and deploy to Vercel. He reports the move took about a day and the site now builds in under a minute.
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67
Move 2,500 marketing pages off a CMS and cut build times from 14 to 4 minutes
Sentry's marketing and growth team, with a couple of developers, used Claude Code to move about 2,500 pages from a headless CMS into Markdown on Astro, folding 200 one-off pages into 3 templates. Builds dropped from about 14 minutes to under 4, and non-engineers now ship pages through Claude skills.
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67
Have an agent code a complex open-source feature unattended for seven hours
Rakuten ML engineer Kenta Naruse gave Claude Code the job of adding an activation vector extraction method to the vLLM library. It worked on its own for seven hours, he wrote no code, and the result matched the reference method with 99.9% numerical accuracy.
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52
Split a giant legacy codebase into modules with an agent doing the grunt work
Nubank used Devin to help migrate an 8-year-old ETL monolith with over 6 million lines into smaller sub-modules, running many sub-tasks in parallel while engineers reviewed. The company reports an 8-12x engineering efficiency gain and over 20x cost savings on that work.
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58
Build a small web app by describing it to a coding agent
Describe the app in plain words, let the coding agent plan and build it in small steps, and test each step before moving on.
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65
Fix a broken vibe-coded app with a debugging prompt
Instead of "it doesn't work", give the coding agent the error, what you expected and what happened, and make it explain the cause before it edits anything.
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54
Launch a vibe-coded app with a ship checklist
Before you share your app, have the coding agent walk a launch checklist: domain, hosting, secrets, privacy, error pages, backups and basic security.