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Coding
14 source-verified cases.
- Migrate two websites from WordPress to Wagtail with Claude CodeRecreated promptEvidence: Described by poster
Over a weekend Claude Code migrated two sites from WordPress to Wagtail (PHP to Python), including server setup, data transfer, testing and fixes, and redesigned a homepage; the poster reports nothing broke and traffic and tools stayed in place.
Claude Code · Coding · Source date:
- Port a backend to Convex in four hours with Factory's DroidRecreated promptEvidence: Described by poster
The poster reports that Factory's Droid ported their tRPC/Drizzle custom backend to Convex in about 4 hours, with some bugs left to fix.
Factory Droid · Coding · Source date:
- Migrate a 50-screen app from Firebase to Supabase with Claude CodeRecreated promptEvidence: Described by poster
Going feature by feature, the poster used Claude Code to generate database schemas, write queries and fix daily errors; they report migrating about 85% of a 45–50 screen Flutter app from Firebase to Supabase in 10–20 days.
Poster says:~85% migrated in 10–20 days
Claude Code · Coding · Source date:
Talking to Codex in voice mode while cooking dinner, the author got a Django newsletters archive with four importers and a pull request, then finished the rest with typed prompts.
OpenAI Codex (ChatGPT desktop, voice mode) · Coding · Source date:
- Migrate 180 microservices to a new framework version with Cursor agentsRecreated promptEvidence: Company case study
Brex reports that its self-correcting, self-hosted Cursor agents let one engineer migrate 180 microservices from Micronaut 3 to 4 in a month, which it calls a 32x per-capita speedup.
According to Brex:180 microservices migrated in one month
Cursor (self-hosted agents) · Coding · Source date:
- Automate defect remediation across C/C++ codebases with Codex CLIRecreated promptEvidence: Company case study
According to OpenAI's case study, Cisco's Codex CLI defect-repair workflow raised defect resolution throughput 10–15x, and Codex build optimization saved more than 1,500 engineering hours a month.
According to OpenAI:10–15x defect resolution throughput
OpenAI Codex CLI · Coding · Source date:
- Port an HTML5 parser from Python to JavaScript with Codex CLIEvidence: Screenshots or logs
Codex CLI (GPT-5.2) ran for hours largely unattended and produced about 9,000 lines of dependency-free JavaScript passing 9,200 html5lib tests, in about 4.5 hours start to finish.
Poster says:Passes 9,200 html5lib tests
OpenAI Codex CLI · Coding · Source date:
- Upgrade a plugin to a new framework alpha with Codex CLIEvidence: Screenshots or logs
A one-line `codex exec` loop read the Datasette 1.0a20 upgrade docs, fixed the failing tests, and got the datasette-checkbox plugin passing again.
OpenAI Codex CLI · Coding · Source date:
- Build a terminal-to-HTML sharing tool with Claude Code for webEvidence: Shown on video
Claude Code for web built a terminal-to-html tool that turns pasted terminal output into a shareable gist-preview link, recorded start to finish in an 11-minute video.
Claude Code for web · Coding · Source date:
- Get DeepSeek-OCR running on an NVIDIA Spark with Claude CodeEvidence: Screenshots or logs
With four prompts and about 40 minutes, Claude Code figured out the right ARM CUDA PyTorch wheels, got DeepSeek-OCR running on NVIDIA Spark hardware, and OCR'd a test image.
Claude Code · Coding · Source date:
- Write and ship a complete Datasette plugin with Claude CodeEvidence: Screenshots or logs
Claude Code (Sonnet 4.5) wrote every line of code and every test for the datasette-os-info plugin with minimal prompting, and the author shipped it.
Claude Code · Coding · Source date:
Security startup Jit moved its engineers from JetBrains to Cursor and, according to the article, delivered features 1.8–3x faster.
Reported by LeadDev:1.8x–3x productivity gains
Cursor · Coding · Source date:
- Generate a colophon page for a GitHub Pages site with Claude CodeEvidence: Screenshots or logs
Claude Code wrote a script that builds a mobile-friendly colophon page listing every tool and its commit history, then wired it into the GitHub Pages deploy workflow.
Claude Code · Coding · Source date:
- Vibe-code a 3D town-building game with Claude CodeEvidence: Article or interview
From a single informal prompt, Claude Code built a working 3D game for placing buildings and driving around in about four minutes; follow-up prompts added a fire truck, traffic, and fires.
Reported by One Useful Thing:Working game in about four minutes
Claude Code · Coding · Source date: