Check out the detailed blog with code: https://krishcnaik.substack.com/p/guardrails-with-langchain-a-complete?r=6ah1nv&utm_campaign=post&utm_medium=web&triedRedirect=true
In this crash course, we will cover everything you need to know about implementing guardrails in LangChain agents -- from simple keyword filters to production-grade layered middleware stacks. By the end, you will have built a fully guarded healthcare chatbot with PII detection, content filtering, human-in-the-loop approval, and output safety validation.
Here is what we will cover:
What are Guardrails and why do they matter?
Two approaches: Deterministic vs Model-based
Built-in: PII Detection Middleware
Built-in: Human-in-the-Loop Middleware
Custom: Before-Agent Guardrail (input filtering)
Custom: After-Agent Guardrail (output safety)
Layered / Combined Guardrails
Real-World Use Case: Healthcare Chatbot
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The third AI workshop taught by our legendary teacher, Nick Sarafa. This is a full-day hands-on training workshop for purposeful co-creation with AI using Claude Code.
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◆ Fri 09 Oct 2026◆ KOKO Cafe, London◆ With Nick Sarafa
