I rebuilt Stack Overflow with AI in it — here's why and how (SvelteKit + Cloudflare Workers)

#webdev #cloudflare #svelte #showdev

The Problem Nobody Is Talking About

Every day, millions of developers solve coding problems with AI.
The solutions work. But those conversations are private.

Stack Overflow's traffic has dropped significantly since ChatGPT launched.
The knowledge that used to be publicly indexed is now locked in
private chat windows, never to be found again.

My Solution: CodeAnswr

What if AI-assisted Q&A was public by default?

You chat with AI to solve your problem
You get a pre-publish privacy review
A scanner strips API keys, passwords, AWS credentials automatically
You confirm → the Q&A is published and searchable forever

Live: https://codeanswr.com

Tech Stack (all free)

Layer	Tech
Frontend	SvelteKit → Cloudflare Pages
Backend	Hono.js → Cloudflare Workers
Database	Cloudflare D1 (SQLite)
Cache	Cloudflare KV
AI	Puter.js (free, unlimited)
Cost	~$1/month (domain only)

What I'm Most Proud Of

Privacy Scanner: Scans for 20+ sensitive data patterns before
anything is published — AWS keys, GitHub tokens, Stripe keys, JWTs,
private keys. Shows exact line numbers in a warning before publish.

MCP Server: There's a Model Context Protocol server so
Claude/Cursor users can search CodeAnswr directly from their editor.

Zero rate limits: Because AI runs through Puter.js, there are
no per-user API limits. Anyone, anywhere can use it freely.

What I Learned Building on Cloudflare Workers

D1 is fast enough for a Q&A platform — sub-100ms query times
Hono.js is the right framework for Workers (tiny bundle, great middleware)
KV caching is essential — hot question lists cached for 15 min
adapter-cloudflare in SvelteKit works great, but you lose Node.js APIs (plan for this early)