If you are building cryptocurrency trading algorithms, liquidation dashboards, or funding rate arbitrage bots, you already know that data is everything. In the crypto derivatives space, Coinglass has established itself as the premier platform for market data. With the release of their unified API v4, they opened up institutional-grade access to open interest, funding rates, liquidations, and order book heatmaps across all major exchanges.
However, when I started building my own tooling in Go to consume this data, I noticed a gap. I wanted a strongly typed, concurrent-safe client that didn't drag a massive tree of third-party dependencies into my go.mod file.
To solve this, I built coinglass-go — a small, idiomatic, and dependency-free Go SDK for the Coinglass API v4. In this article, I want to share the design decisions behind the library, how it handles rate limiting gracefully, and how you can use it to power your own crypto analytics tools.
Why Build Another API Client?
When integrating with REST APIs in Go, developers generally have two choices: use an auto-generated client (like OpenAPI/Swagger) or write a custom wrapper. Auto-generated clients are great for API coverage, but they often result in unidiomatic Go code, weird pointer types, and bloated dependencies.
