FeatureHub features are pre-engineered, point-in-time (PIT) investable signals (i.e., features / factors) you can plug directly into research, forecasting, and portfolio construction workflows—without building and maintaining your own data engineering pipeline. Each feature has a stable UUID you reference programmatically.
In the ForecastOS UI, FeatureHub → Features is where you browse and select features from the library, typically by:

ForecastOS exposes FeatureHub programmatic access for clients with access. At a high level, you can expect:
If you’re using the open-source Python helper library, FeatureHub access is designed to be “one line” once authenticated: you set your API key, then fetch the feature by UUID.
import os, forecastos as fos
fos.api_key = os.environ.get("FORECASTOS_KEY")
df = fos.get_feature_df("97c4fb88-7d1d-4d54-aa3e-4aaac0ba771d")
What's next is up to you: