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LangChain Structured Output in NestJS: Typed with Zod

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

To get an object instead of text from a LangChain agent in NestJS, pass a Zod schema as output to run() . This tutorial turns a customer message into an order your code can use, in a dozen lines. This is part 3 of AI agents with NestJS . Part 2 gives the agent the catalog tools used here. Tested wi…

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  1. 2026-10-29 15:32 · DEV Community — AI
    LangChain Structured Output in NestJS: Typed with Zod

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