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Examples Gallery#

Complete Jac applications to study, learn from, and build upon. Each example includes full source code, explanations, and step-by-step guidance.

LittleX - Social Media Platform#

Build a Twitter-like app in 200 lines of code.
Difficulty Intermediate
Features Nodes, walkers, edges, graph traversal, jac start
Learn How to model social relationships as graphs

Start LittleX Tutorial →

EmailBuddy - AI Email Assistant#

An intelligent email assistant powered by LLMs.
Difficulty Intermediate
Features by llm, structured outputs, tool calling
Learn How to build agentic AI applications

Start EmailBuddy Tutorial →

RAG Chatbot - Document Q&A#

A multimodal chatbot with document search and retrieval.
Difficulty Advanced
Features MCP tools, vector search, retrieval-augmented generation
Learn How to build knowledge-based AI systems

Start RAG Chatbot Tutorial →

RPG Level Generator#

AI-powered procedural game level generation.
Difficulty Advanced
Features by llm, structured data types, game logic
Learn How to use AI for creative content generation

Start RPG Generator Tutorial →

More Examples#

Agentic AI Applications#

Example Description
Friendzone Lite Social AI agent with ReAct pattern
Aider Genius Lite AI coding assistant
Task Manager Lite AI task management

Game Examples#

Example Description
Fantasy Trading Game AI-driven trading simulation

Running Examples#

From Source#

# Clone the repository
git clone https://github.com/Jaseci-Labs/jaseci.git
cd jaseci/examples

# Run an example
jac example_name/main.jac

As API Server#

# Start the example as an API
jac start example_name/main.jac

# View API documentation
open http://localhost:8000/docs

Running Tests#

# Test an example
jac test example_name/main.jac

# Test all examples in directory
jac test -d examples/

Example Structure#

Each example follows this structure:

example_name/
├── main.jac           # Main application code
├── main.impl.jac      # Implementation details (optional)
├── main.test.jac      # Tests
├── README.md          # Documentation
└── requirements.txt   # Python dependencies (if needed)

Contributing Examples#

Want to share your Jac project?

  1. Create a working example with tests
  2. Write a tutorial explaining the key concepts
  3. Submit a pull request

See the Contributing Guide for details.

Reference Examples#

The Jac repository includes comprehensive reference examples for every language feature:

jac/examples/reference/
├── basic_syntax/      # Variables, functions, control flow
├── data_types/        # Collections, enums, types
├── osp_features/      # Nodes, edges, walkers
├── ai_integration/    # by llm, semantic strings
└── advanced/          # Concurrency, generators

Each reference example includes:

  • Working .jac source code
  • Markdown documentation
  • Python equivalent for comparison