From Side Project to SaaS: My Journey Building a Real-Time Market Data API (Crypto, Forex, Commodities)

Building a SaaS product always sounds exciting when you read about it online. But when you actually start building one, the journey is very different: messy architecture decisions, sleepless nights debugging production issues, and constantly wondering whether anyone will actually use your product. In this post, I want to share my journey building my first SaaS: a Real-Time Market Data API that provides data for crypto, forex, and commodities . Hopefully this story helps other developers who are thinking about building their own SaaS. The Idea As a developer working with financial data and trading systems, I often needed reliable real-time market data . The common problems I kept running into were: APIs with high latency Limited support for multiple asset classes Complex or expensive pricing Difficult integrations Most APIs only focus on one market : Crypto Forex Stocks But many developers building trading systems, bots, or analytics dashboards actually need multiple markets at once . S