Build a Magic: The Gathering pauper decklist browser with player profiles
Session from merchantscroll-traces on Hugging Face by vedalken · MIT · condensed by Coders Talk
Implement a set of planned features (decklist export, Pauperwave archetype naming/classification, Pauperwave IRL decklist import, player profile page) for a Pauper decklist browsing site, one feature at a time with developer review after each.
- +0Prompt · +0Read the SOW and feature docs, implement features one by one, run a local server so I can review each before confirming or asking for changes.
- +0mAgent did · +0mFixed the export decklist filename format to match spec and started a local HTTP server on port 8080 so the developer could review the site live.
- +0mAgent did · +0mBuilt a first archetype classification engine: created archetypes/pauper.json from card frequency analysis of raw tournament data, added signature-card matching, and displayed archetype names in the deck header, dropdown and export text.
- +0mIntervention · +0mTold the agent the deck labeling was wrong but to keep moving to the next feature and leave this one marked open rather than complete.Why: The classification was guessing from card frequencies without real labeled data, so I didn't want it marked done yet.
- +0mAgent did · +0mBuilt a Pauperwave crawler (src/pauperwave_crawler.py) parsing the markdown decklist format, integrated it into the pipeline, imported 63 IRL tournaments, added an 'IRL' badge to the UI, and wired the crawler into the GitHub Actions workflow.
- +1mIntervention · +1mAsked the agent to revert the 4-of card highlighting feature entirely and mark it cancelled since they weren't sure yet how they wanted it to work.Why: I didn't know how I wanted this feature to look yet, so I'd rather cancel it than leave a half-right implementation in.
- +1mAgent did · +1mRebuilt the archetype taxonomy from 567 real labeled Pauperwave decklists instead of guesswork, wrote a classifier module, and backfilled archetype labels onto 15,679 MTGO decklists.
- +1mAgent did · +1mImplemented the player profile feature end to end: a Python stats pipeline generating per-player JSON (trophies, win rate, favorite decks, recent results) and a new player.html page, plus clickable player names and swipe/arrow navigation between deck and profile.
- +3mFail · +3mAfter converting the profile page into an in-page modal, the developer reported the modal never appeared; the agent found the modal element lived inside #content, which was wiped by innerHTML="" on every deck navigation, and moved it outside that container to fix it.
- +3mOutcome · +3mSession ended with all six planned features resolved (5 done, 1 explicitly cancelled), a working Pauperwave-based archetype classifier backfilled across ~15,679 decks, a player profile modal, and refined header/stats UI, confirmed working by the developer.
Next time I'd start by pointing the agent at real Pauperwave labeled data before letting it guess archetypes from card frequency — that guesswork produced a whole feature I had to mark 'keep open' until we redid it properly. The correction that did the most work was telling it to cancel the card-highlighting feature outright instead of half-shipping it, and later catching that the profile modal was being wiped by an innerHTML reset, which the agent found and fixed once I reported the symptom.