Guardrails AI

Open-source framework for adding validators and guardrails to LLM outputs

Code & DevelopmentFree

Guardrails AI is an open-source Python framework for adding input and output validation, format checking, and structured outputs to LLM pipelines. It provides a library of pre-built validators (no PII, factual accuracy, JSON schema compliance, toxicity) and a simple API for composing validation pipelines around any LLM. Teams use Guardrails to ensure AI outputs meet quality, safety, and format requirements before they reach users in production applications.

Key Features

• ✓Pre-built validators
• ✓PII detection
• ✓JSON schema validation
• ✓Custom validators
• ✓Python native
• ✓Open source