instructor

Extract and validate structured data from LLM responses using Pydantic schemas.

Updated Jun 28, 2026
One-click install
npx skills add https://github.com/jleechanorg/hermes-agent --skill instructor-jleechanorg
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: instructor
Source: https://github.com/jleechanorg/hermes-agent/tree/main/optional-skills/mlops/instructor
Command: npx skills add https://github.com/jleechanorg/hermes-agent --skill instructor-jleechanorg

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Extract and validate structured data from LLM outputs to ensure reliable, type-safe results.

Core Features & Use Cases

  • Automatic validation: Enforces Pydantic schemas on LLM outputs and retries on validation failures.
  • Streaming outputs: Streams partial results for real-time processing and UI updates.
  • Provider-agnostic: Works across multiple LLM providers with consistent behavior.
  • Error handling: Clear feedback and retry loops when data is missing or malformed.

Quick Start

Ask the AI to extract a structured user profile from a natural-language input and validate it against a Pydantic model.

Frequently Asked Questions about instructor

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

FAQPage Schema
How do I validate LLM outputs against a Pydantic schema?

You can extract structured data from LLM responses by enforcing Pydantic schemas that validate the output and automatically retry generation when validation fails, ensuring reliable type-safe results.

Can I stream partial structured data results from multiple LLM providers?

Yes, you can stream partial structured data results in real-time across multiple LLM providers. This skill supports provider-agnostic streaming to enable immediate processing and UI updates as data arrives.

What is the best way to handle validation errors during LLM data extraction?

The best way to handle validation errors during LLM data extraction is using automatic retry loops with configurable limits. This provides clear feedback and re-prompts the model when extracted data is missing or malformed.

Does this structured data extraction approach work across different LLM providers?

Yes, this structured data extraction approach works provider-agnostically across multiple LLM providers. It ensures consistent Pydantic schema validation and streaming behavior regardless of the underlying LLM integration.

Why does LLM data extraction fail without structured validation?

LLM data extraction often fails without structured validation because models can return missing or malformed data. Enforcing Pydantic schemas with automatic retries ensures outputs strictly match expected types and formats.