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langchain-structured-output

Convert unstructured LangChain model outputs into validated JSON using Zod schemas.

Updated Feb 13, 2026
Search Tags:#typescript#data extraction#validation#langchain#llm#zod#structured output
One-click install
npx skills add https://github.com/evanfang0054/x-codegen-agent --skill langchain-structured-output-evanfang0054
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: langchain-structured-output
Source: https://github.com/evanfang0054/x-codegen-agent/tree/main/.claude/skills/langchain-structured-output
Command: npx skills add https://github.com/evanfang0054/x-codegen-agent --skill langchain-structured-output-evanfang0054

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill transforms unstructured LLM responses into validated, type-safe JSON objects, streamlining data extraction and integration with other systems.

Core Features & Use Cases

  • Schema Definition: Define expected output using Zod or JSON schemas.
  • Automatic Validation: Ensures responses conform to the defined schema.
  • Type Safety: Provides type-safe access to structured data.
  • Use Case: Extracting contact information (name, email, phone) from a block of text into a structured JSON object for easy use in a CRM.

Quick Start

Use the langchain-structured-output skill to extract contact information from the provided text.

Frequently Asked Questions about langchain-structured-output

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I get structured JSON output from LangChain models using Zod?▼

You can get structured JSON output from LangChain by defining expected response formats with Zod schemas, which enables automatic validation and type-safe access to the extracted data.

How do I extract contact information from unstructured text into a CRM format?▼

To extract contact information into a CRM format, define a schema specifying fields like name, email, and phone, then process the text to return a validated, structured JSON object.

What happens if an LLM does not support direct structured output?▼

If an LLM does not support direct structured output, the system falls back to tool usage to enforce the schema, ensuring the model's response conforms to the required Zod definition.

Does LangChain structured output support TypeScript type safety?▼

Yes, LangChain structured output supports TypeScript type safety by using Zod schemas to validate model responses, providing developers with type-safe access to the resulting JSON objects.

When do I need schema validation for LLM data extraction?▼

You need schema validation for LLM data extraction when converting unstructured text into predictable JSON formats for API integration, ensuring the extracted data strictly matches your defined structure.

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