examples

Echo PDK Examples

This directory contains example Echo templates demonstrating various features.

Examples

Movie Recommender

File: movie-recommender.echo

Demonstrates:

• Variable substitution: {{companions}}, {{genre}}
• Conditionals with #contains operator
• Conditionals with #equals operator
• Context-dependent content

Run:

echopdk render movie-recommender.echo --context-file movie-recommender.context.json

Expected output:

You are a Context-Aware Movie Curator.

Your goal is to recommend the perfect movie based on who I am watching with (Shimon) and the preferred genre (SciFi).

**Watching with Shimon - Rules:**
* **Preference:** We love 80s/90s Action or Sci-Fi cult classics.
* **Constraint:** Do not recommend anything released after 2015 unless it has a rating above 8.5 on IMDB.

Based on the constraints above, recommend ONE movie. Explain why it fits the specific requirements for this viewing context.

Customer Support

File: customer-support.echo

Demonstrates:

• Default values: {{company ?? "our company"}}
• Section definitions: [#SECTION name="greeting"]
• Section includes: [#INCLUDE greeting]
• Nested conditionals
• Multiple operators: #equals, #lte, #exists

Creating Your Own

1. Create a .echo file with your template
2. Create a .context.json file with sample data
3. Run: echopdk render your-template.echo --context-file your-context.json

Syntax Quick Reference

{{variable}}                    # Variable
{{var ?? "default"}}           # Default value
[#IF {{x}} #equals(y)]...[END IF]    # Conditional
[#SECTION name="x"]...[END SECTION]  # Section definition
[#INCLUDE x]                   # Section include
[#IMPORT ./path.echo]          # Import file