{"success":true,"engine":"Black Belt Labs","metric_id":"M50009","name":"Market Depth Ratio","category":"volume","classification":"classic","update_frequency":"15min","inputs":["Exchange market data"],"inputs_are":"types of input","lookback_windows":["30 HOUR"],"lookback_basis":"windows found in the implementation (INTERVAL clauses)","formula":"Average bid-to-ask depth ratio within ±1% of mid across tracked exchange order books (30h window).","formula_published":true,"definition_version":"v00001","definition_history":[{"version":"v00001","effective_from":"2026-02-05T18:07:42Z","change_note":"initial recorded definition"}],"methods":["progr"],"disclaimer":"Madjik metrics are informational market indicators computed by Black Belt Labs. They are not investment advice, an offer, or a recommendation to buy or sell any asset."}