The Multi Commodity Exchange of India Limited (MCX) on January 16, 2026, issued a circular regarding Trading Market Data Interfaces (APIs) - MCX Market Data Interface (MDI) and MCX Enhanced Market Data Interface (EMDI) – v1.6 – LIVE.
The following has been stated: -
•MCX has updated the MDI and EMDI Market Data Interface API (Version 1.6), adding new values 7 (Upper Circuit Limit) and 8 (Lower Circuit Limit) in the MDEntryType field for Depth Incremental Messages.
•These changes will go live from January 19, 2026.
•Trading Members and empanelled vendors must make necessary system amendments to accommodate the update.
•The changes are already available in the test environment and can be tested during the mock trading session scheduled as per the January 14, 2026, circular.
[Circular no.: MCX/CTCL/025/2026]
