builtbykev
13ca070096
NORTH STAR (design philosophy, not built): VYNDR measures players by MODERN FUNCTION, not legacy label — the principle already under the archetype system, from Rashad Phillips' Basketball Position Metric. The rule: every proprietary metric is baselined against the player's functional ARCHETYPE's CURRENT-SEASON behavior, never the position's inherited standard. The edge is that the market often prices today's players against yesterday's baselines, so archetype-vs-position baseline disagreement is a repeatable mispricing. Generalizes across sports. Moat = proprietary metrics x current-game calibration x our private outcome data. Metrics ship as VALIDATED FAMILIES: hypothesis, flagged build, backtest, ship-or-delete with the negative result written down. Nothing is real until the harness proves it predicts better. SOURCING SCOPE (report, no code): MLB opponent strength IS derivable from statsapi, verified live — one free call returns all 30 teams' pitching splits (era/whip/avg/slg/ops/homeRuns/strikeOuts/HR9), which beats the ESPN field we were reaching for because it is STAT-SPECIFIC, exactly what opp_rank_stat wants. NBA/WNBA cannot use ESPN (its team endpoint carries only a team's own stats, no defensive rating or pace); options are stats.nba.com dashboards, deriving allowed-points from scoreboard finals we already fetch, or API-Sports. API-Sports is a fallback tier at best — 100/day will not survive per-team-per-day. ESPN stays last, always behind an adapter. Proposed the SOURCE-ADAPTER pattern: one interface per feed, config-driven primary+fallback per (sport x capability), normalized output so vendor quirks stay in adapters, fallback announced rather than silent, sources with zero callers deleted rather than left as corpses, and a health check that PAGES when a source returns empty or broken — where EMPTY IS A FAILURE. Tonight's crash (captured 0 / errored 15) and the months-null opp_rank_stat are both exactly what that check exists to catch. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SmNjJAwEnqHPtXbvSZR8kA