Layer vs. SoniCloud Recorder SDK

One API for prediction markets. Find markets, stream normalized data, place orders, and track positions across Kalshi and Polymarket. Hi HN, I'm David. I built Layer, an API + SDK or building trading bots/ai agents across prediction markets.The idea came from something i kept running into while playing with trading bots. Once your bot needs access to more than 1 venue, you suddenly have to deal with different market schemas, contract definitions, prices, fees and APIs before you can reason about where to trade. That gets messy real fast, especially with prediction markets. The same real-world event can exist on Kalshi & Polymarket, but the contracts can be represented differently.Here's my broader thesis:...

SoniCloud makes smart voice hardware and software. Its Recorder project is a recording-card device for developers and businesses, with an open BLE protocol SDK, sample integrations for Android, iOS, HarmonyOS and Flutter, and Windows/macOS desktop demos. It supports device connection, recording control, live audio, file transfer, OTA updates and speech-to-text. Hardware specs, samples and custom work are available from the company on request.