Operating rules - Use for all eQTL Catalogue calls. - Use . - Prefer targeted association endpoints over broad list endpoints. - The public API currently appears strict about query validation, and live smoke tests returned intermittent / /timeout failures even with documented parameter sets; treat this source as usable but upstream-fragile. - For association endpoints, the script now backfills compatibility defaults for , , , and blank filter strings because the live API is currently rejecting omitted optional filters. - Prefer in requests; the script mirrors it to the legacy query key to acc…