Raw Signal, a quieter way to read the card market

Field notes

Raw Signal combines a validated TCGCSV sync with cached market-history observations rather than treating every listing field as equally meaningful. Its leaderboard exposes rarity, set, price, and seven- or 30-day movement filters, while the Pokémon view reports 13,435 ranked cards. The page also documents operational fallbacks: rejected upstream records are recorded, the last good snapshot is retained after validation failure, and missing history remains unavailable instead of being silently estimated.