Open source.

Idempotent Statcast → BigQuery ingestion, with first-class docs for SQL/LLM agents and round-trip validation against Baseball Savant.

118 tests · Savant round-trip verification · resumable chunked backfill

Idempotent Yahoo Finance OHLCV → BigQuery ingestion across 5 intervals, with first-class docs for SQL/LLM agents and internal-consistency verification.

126 tests · 5 intervals · BigQuery-internal verification

Idempotent NHL play-by-play (with on-ice arrays merged from shift-charts) → BigQuery ingestion, with first-class docs for SQL/LLM agents and verification against the NHL public API.

126 tests · 6 tables in lockstep · on-ice arrays from shift-charts

Idempotent EA NHL Ultimate Team ratings → BigQuery snapshots (skater + goalie endpoints unified), with a cross-source resolver that links HUT cards to NHL player IDs.

56 tests · skater + goalie snapshots · normalized-name card↔player resolver

Idempotent NFL play-by-play (nflfastR's modeled 372-column feed, back to 1999) → BigQuery ingestion, with first-class docs for SQL/LLM agents and plays→weekly reconciliation.

77 tests · 6-metric plays→weekly reconciliation · schema-drift guard

Historical fantasy football ADP plus NFL coaching, usage and play-charting context → BigQuery, joinable to nflverse play-by-play. Two independent ADP markets, a 20-system player-id bridge, and a per-week scheme fingerprint attributed to the coach who called it.

13 tables · 353 tests · every coverage window measured, not estimated