MarketWatcher

Single-file markets dashboard. index.html is the entire site — no build step, no dependencies, no bundler. Covers crypto, individual stocks (GameStop, EBAY, a semiconductors watchlist), gold, the S&P 500, US macro (FRED), Treasury and mortgage rates, and a personal position tracker.

Live at https://marketwatcher.pages.dev (behind a Cloudflare Access Gmail sign-in policy).

Deploying

This repo is connected to Cloudflare Pages. Any push to main deploys automatically to production.

Build settings in Cloudflare (set once at project creation):

Field	Value
Framework preset	None
Build command	(blank)
Build output directory	/
Production branch	main

Updating

Replace index.html and commit. That is the whole workflow.

Via git:

git add index.html && git commit -m "update dashboard" && git push

Via the GitHub website: edit index.html in place, commit to main, and Cloudflare builds and promotes it within ~30 seconds. Hard-refresh (Ctrl+Shift+R) afterwards — the edge cache holds old HTML for a minute or two.

Notes

• All user-entered data (positions, cost basis, API keys, per-chart collapse state) lives in the browser's localStorage. Nothing personal is stored in this repo.
• The site is served behind Cloudflare Access — the repo being public or private does not change who can view the deployed page, but a public repo does mean anyone can read the HTML source, so no secrets in the file (API keys are entered in-page and kept in localStorage).
• Third-party data comes from CORS-open APIs where possible (CoinGecko, CoinPaprika, FINRA, TradingView widgets, FRED images); heavy or frame-blocking sources (coinglass, kcex, unusualwhales, etc.) are link-outs.
• See CLAUDE.md for the internal architecture, hard rules, and gotchas.