# AI SDK 6.0.271

- Product: AI SDK (https://whatsnew.fyi/product/ai-sdk)
- Vendor: Vercel
- Date: 2026-08-27
- Version: 6.0.271
- Original notes: https://github.com/vercel/ai/releases/tag/ai%406.0.271
- Permalink: https://whatsnew.fyi/product/ai-sdk/releases/6.0.271

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- **fixed** — Validate persisted typed tool calls against current input and output schemas, with schema-incompatible empty or error inputs and terminal history from unavailable tools remaining loadable as dynamic tool parts instead of exposing unvalidated values under current static tool types
- **added** — Add operation-level outcomes to UI message stream end callbacks

###### Patch Changes

- 9310140: Validate persisted typed tool calls against current input and output schemas.
  Schema-incompatible empty or error inputs and terminal history from unavailable
  tools remain loadable as dynamic tool parts instead of exposing unvalidated
  values under current static tool types.
- b503790: add operation-level outcomes to UI message stream end callbacks