Ciphermaniac

Pokémon TCG tournament data, visualized

Live Site • What It Does • How the Data Flows • Development • Credits

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Ciphermaniac answers the questions competitive Pokémon TCG players actually ask: who plays this card, how many copies, and is it trending up or down? Pick any card and see which decks run it. Browse archetypes, compare variants, and filter decklists by the exact cards they include or exclude.

What It Does

• Card pages — usage across archetypes, average copy counts, a price history sparkline, and usage over time
• Archetype breakdowns — core lists, tech choices, and side-by-side variant comparisons
• Meta trends — archetype popularity shifts, rising and falling cards, and price movers
• Player profiles — tournament results per player, with head-to-head comparison across shared events
• Flexible filtering — stack multiple includes and excludes, down to specific copy counts
• Fast loads — reports are precomputed and served as static artifacts, so pages render in under a second

How the Data Flows

GitHub Actions collect and process everything on a schedule; the site itself never scrapes anything at request time.

Pipeline	What it does	When
Online Meta Report	Aggregates the last 14 days of online tournaments from PlayLimitless	Daily
Daily Price Check	Pulls TCGPlayer market prices via TCGCSV and appends rolling price history	Daily
Trends Report	Computes archetype popularity, card usage shifts, and price movers	Daily
Player Aggregator	Builds per-player results and head-to-head data	Daily
Card Metadata	Refreshes card synonyms, types, and WebP thumbnails	Daily / weekly
Download Tournament	Scrapes Day 2 decklists from major events on LimitlessTCG	On demand

Artifacts land in Cloudflare R2 (browsable at r2.ciphermaniac.com), and the site runs on Cloudflare Pages with Functions backed by KV, R2, and D1.

Stack: SolidJS + TypeScript (strict) + Vite on the front end; Cloudflare Pages Functions on the back.

Development

git clone https://github.com/rosematcha/ciphermaniac.git
cd ciphermaniac
npm install
npm run dev

Requires Node 20+.

Command	What it runs
npm run dev	Vite dev server
npm run build	Production build
npm run validate	Typecheck (frontend, backend, node) + ESLint
npm test	Unit tests
npm run test:mobile	Playwright mobile tests
npm run knip	Dead code check

CI runs the same quality gates plus a Lighthouse performance budget on every push.

Credits

• LimitlessTCG, PlayLimitless, and Robin — tournament data. The Limitless team's work is foundational to the Pokémon TCG community.
• TrainerHill and Brad — deck archetype analysis and early development support.
• TCGCSV and CptSpaceToaster — TCGPlayer market prices in a usable form after TCGPlayer's API crackdown.

License

MIT — see LICENSE.

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_{Not affiliated with The Pokémon Company, Nintendo, Game Freak, Creatures Inc., or RK9.}