langchain-ai/langchainjs langchain@1.6.5

on GitHub

Patch Changes

• #12183 e220aee Thanks @thushanth-bengre-langchain! - feat(langchain): add model router and auto mode middleware

  • Add modelRouterMiddleware, which picks the agent's model for each run from a decision model's Choice answer
  • Add autoModeMiddleware, which blocks listed tool calls that a decision model judges risky

• #12192 9920d4b Thanks @jkennedyvz! - Require Zod 4.6.6 or newer for installed dependencies to exclude versions affected by GHSA-mrhx-c7xc-m3w5. Zod v3 schemas remain supported through the bundled zod/v3 entry point.