outlines

Generates JSON, XML, or code output using PyDantic models and grammar constraints.

Updated Mar 12, 2026
One-click install
npx skills add https://github.com/GarrettRoi/open-manus --skill outlines-garrettroi
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: outlines
Source: https://github.com/GarrettRoi/open-manus/tree/main/skills/mlops/inference/outlines
Command: npx skills add https://github.com/GarrettRoi/open-manus --skill outlines-garrettroi

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires outlines, transformers, vllm, pydantic, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill guarantees valid JSON, XML, or code structure during generation, preventing errors and saving debugging time.

Core Features & Use Cases

  • Type-Safe Outputs: Use Pydantic models for guaranteed data structure and type correctness.
  • Local Model Support: Works with Transformers, vLLM, and llama.cpp for flexible deployment.
  • Maximized Inference Speed: Achieves high performance through Outlines' zero-overhead structured generation.
  • Use Case: Automatically extract structured user profiles from free-form text into a Pydantic model, ensuring all fields (name, age, email) are correctly formatted and present.

Quick Start

Use the outlines skill to generate a JSON object representing a user with name, age, and email.

Frequently Asked Questions about outlines

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

FAQPage Schema
How do I enforce valid JSON schema generation when using local models?

You can enforce valid JSON schema generation by applying Pydantic models as grammar-based constraints during inference, ensuring structured outputs and type safety with local models like Transformers and vLLM.

What is structured text generation and how does it prevent invalid outputs?

Structured text generation uses grammar-based constraints to enforce valid JSON, XML, or code formats during inference. This mechanism guarantees type-safe outputs, preventing formatting errors and saving debugging time.

Does structured generation with Pydantic work with vLLM and Transformers?

Yes, structured generation using Pydantic models works with vLLM, Transformers, and llama.cpp. This support allows flexible local deployment while maintaining maximized inference speed and zero-overhead structured generation.

How do I extract structured user profiles from free-form text into a Pydantic model?

To extract structured user profiles from free-form text, define a Pydantic model with required fields like name, age, and email, then use grammar-based constraints to generate correctly formatted and present structured data.

What is the best way to guarantee type correctness for local model inference outputs?

The best way to guarantee type correctness during local model inference is using Pydantic models as grammar-based constraints. This approach enforces deterministic outputs and achieves high performance through zero-overhead structured generation.

Why does my local model generate invalid JSON and how can I fix it?

Local models generate invalid JSON due to unconstrained decoding. Fix this by applying grammar-based constraints using Pydantic models to enforce valid JSON structure, ensuring type safety and deterministic outputs during generation.