EAD LangChain Template
The template is the lesson.
Not documentation about what to do. Working code that does it. Clone, run, modify. Learn by doing, not by reading about doing.
The Problem With LLM Tutorials
Most LLM tutorials teach toy patterns. Single-file scripts. No tests. No logging. No structure that survives contact with production. Developers learn the API, ship something that works, then spend months retrofitting the infrastructure they should have had from day one.
This template starts where tutorials end.
What You Get
Production patterns from the start:
- Multi-provider LLM support with consistent interfaces
- Test-driven infrastructure, not test-after, not test-never
- Proper logging, configured correctly, probably for the first time in your career
- Enforcement tests that prevent architectural drift as you modify the template
Progressive examples:
The template includes working examples that demonstrate each concept. Not toy examples that break when you add complexity. Real patterns you extend rather than replace.
The Philosophy
Tutorials explain. Templates demonstrate. The gap between “I understand the concept” and “I have working code” is where projects stall.
This template closes that gap by giving you code that already works, structured the way production code should be structured, with tests that enforce the patterns you’ll need to maintain as the project grows.
You learn the methodology by using it. The enforcement tests catch you when you drift. The patterns become habit through practice, not memorization.
Who It’s For
Developers who want to build LLM applications without reinventing logging, testing, and provider abstraction from scratch. Teams who need a starting point that won’t require architectural renovation before their first production deployment.
If you’ve ever shipped an LLM prototype and immediately regretted your infrastructure choices, this template is the redo you wished you’d had.