product · inferred from evidence
Stagehand
A product that imports zod internals and interacts with a model provider, with versions 2.4.x, 2.5.0, and later 2.5.x mentioned.
- Stagehand + zod 4: Invalid schema for response_format, type None
Stagehand's published types imported `zod/v3` internals, so a v4 install silently produced `type: "None"` schemas that the model provider rejects. The team's fix was to pin zod to `^3.25.0` (PR #1032, released in 2.5.0) while they finished