Decoding MEXC Protobuf WebSocket Market Data on FMZ

Summary

The document shows how to subscribe to MEXC’s WebSocket trade stream from the FMZ platform and decode its binary Protocol Buffers messages into readable fields. It introduces the relevant message schema, demonstrates loading a JavaScript protobuf library, and describes converting received bytes into structured records containing trade prices, quantities, direction codes, symbols, and timestamps. The example focuses on aggregated spot trades for BTCUSDT. The article presents protobuf as a more bandwidth- and processing-efficient alternative to JSON and identifies high-frequency strategies, arbitrage, market-data analysis, and risk monitoring as possible uses. It includes a live output example as evidence that the subscription and decoding path works in the described setup. However, it supplies no benchmark figures for latency, CPU use, or bandwidth savings, and the implementation covers only one public stream. Extending it to private channels or other market-data message types requires the appropriate schemas, subscription details, and authentication where applicable.

Key ideas

• MEXC protobuf WebSocket streams send binary messages that must be decoded with the matching message schema.
• The FMZ example subscribes to aggregated spot trades and converts received bytes into readable trade fields.
• Protocol Buffers are presented as a way to reduce transmission and parsing overhead compared with JSON.
• The demonstrated implementation covers a single public channel, so other streams require additional schemas and subscription handling.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.