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Template Engines
Decouple prompts from code — Jinja, Mustache, .prompty files, version-controlled library.
2 hours2 resources
Prompts = data, not code. Template engines give you:
- Easy A/B testing (swap template id, no code change)
- Non-tech contributors can edit prompts
- Multi-language prompts in one file
- Safe variables (
{{user_name}})
Practical: Microsoft .prompty, LangChain PromptTemplate, Mustache, Handlebars. Repo prompts/ dir, each file with metadata + body.