Vercel Flags now supports JSON values as a native type, joining boolean, string, and number in its existing toolkit.
The practical upshot is flag consolidation. Where you previously managed separate flags for ai_model, ai_temperature, and ai_max_tokens, you can now define a single model flag that serves the full configuration object. That reduction in flag sprawl matters at scale, where coordinating multiple flags across environments and rollouts creates real operational drag.
The full changelog is worth reading for the specifics on how JSON values interact with progressive traffic routing and provider failover switching, two use cases where atomic flag updates on a structured object change the operational calculus entirely.
[READ ORIGINAL →]