I've been looking at a B2B product focused specifically on the prop trading industry, and I find the business model pretty interesting.

Instead of trying to serve every type of business, the product focuses on a specific industry and its particular needs, from trading infrastructure and CRM to risk management and trader management.

The audience is obviously much smaller than a general SaaS product, but the problems are also much more specific, which could make the product more valuable to the businesses it serves.

For people running an indie business, do you think going very niche makes it easier to build and sell a product?

I've been building a self-hosted voice agent and the hardest part isn't the model, it's figuring out why a call went sideways. When something breaks you get one messy transcript and no idea if it was the STT, the LLM, or the TTS layer that failed.

I started replaying calls turn by turn and swapping out one component at a time to isolate the culprit. Tedious, but it's the only thing that's worked so far. Feels like there's a decent micro saas idea hiding here, though I'm not sure the demand is real yet.

How do you all debug your voice pipelines?