opencompletion.com/CLAUDE.md

Claude Instructions

Commit Messages

• NEVER add Claude attributions like "🤖 Generated with Claude Code" to commit messages
• NEVER add "Co-Authored-By: Claude noreply@anthropic.com" to commit messages
• Keep commit messages focused on the actual changes and their purpose
• Use conventional commit format when appropriate
• Be concise but descriptive about what was changed and why

Code Style

• Follow existing code conventions in the project
• Use appropriate linting tools (black, ruff, etc.) when available
• Maintain consistent naming and formatting

Testing

• Run existing tests before committing when available
• Write tests for new functionality when appropriate
• Verify changes work as expected

Documentation

• Update relevant documentation when making significant changes
• Keep README files current with new features or setup changes
• Document any new environment variables or configuration options

Python/Matplotlib Best Practices

• Always add matplotlib.use("Agg") before importing matplotlib.pyplot to prevent runtime errors in headless environments

Makefile Best Practices

• Avoid variable substitutions - don't be afraid to be unDRY in the Makefile so engineers can copy and paste
• Use tabs not spaces, and for fuck sake be happy about it

Running OpenCompletion

Environment Setup

• Use vars.sh to set up environment variables
• Required: MODEL_ENDPOINT_x and MODEL_API_KEY_x variables for AI models
• Run with: source vars.sh && python app.py

Makefile Commands

• make venv - Create virtual environment and install dependencies
• make init-db - Initialize database tables
• make test - Run all tests
• make dev-setup - Install development dependencies

OpenCompletion Architecture

Frontend Structure

• Main chat interface is in templates/chat.html
• Base template with CSS is in templates/base.html
• JavaScript code is inline in chat.html for real-time chat functionality
• Uses Socket.IO for WebSocket communication
• Uses marked.js for Markdown rendering and DOMPurify for XSS protection
• Code blocks are rendered with highlight.js for syntax highlighting

Code Block Rendering

• Code blocks are processed in messages after markdown conversion
• Copy buttons are added via addCopyButtonToCodeBlock() function (line 1176 in chat.html)
• Code blocks support:
  • Syntax highlighting via highlight.js
  • Line numbers via addLineNumbers() function
  • Truncation for long code blocks via truncateCodeBlock() function
  • Copy functionality that preserves full content even when truncated

Message Processing Flow

1. Messages received via Socket.IO events (chat_message, message_chunk for streaming)
2. Markdown converted to HTML using marked.js
3. HTML sanitized with DOMPurify
4. Code blocks enhanced with copy buttons, syntax highlighting, and line numbers

Code Execution Integration (New)

• Integration with unfirecracker-code-executor service on cammy.foxhop.net
• Service supports 38 working languages with auto-detection
• Endpoints:
  • /execute - Execute code with specified language
  • /run - Auto-detect language and execute
• Add play button next to copy button for code blocks
• Display execution results inline below code blocks

Activity YAML Schema

Model Configuration (New Feature)

Activities can specify separate models for classification and feedback generation:

# Activity-level defaults (optional)
classifier_model: "MODEL_1"  # For categorizing user responses into buckets
feedback_model: "MODEL_1"    # For generating AI feedback and translations

# Step-level overrides (optional)
sections:
  - section_id: "coding"
    steps:
      - step_id: "code_review"
        classifier_model: "MODEL_1"  # Keep fast classification
        feedback_model: "MODEL_3"    # Use specialized code model

Why Separate Models?

1. Speed: Use fast 8B models for classification → instant bucketing
2. Quality: Use specialized models for feedback → better explanations
3. Cost Efficiency: Don't waste tokens on simple categorization
4. Flexibility: Override per-step for specific needs

Model Defaults

If not specified, both default to MODEL_1 (Hermes-3-Llama-3.1-8B):

• Always available in base install
• Fast and accurate
• Excellent for role-playing and general tasks
• Great classifier and feedback generator

Recommended Model Combinations

Activity Type	Classifier	Feedback	Rationale
General Education	MODEL_1	MODEL_1	Fast, accurate, always available
Programming	MODEL_1	MODEL_3	Fast bucketing + code specialist (Qwen3-Coder)
Role-Playing	MODEL_1	MODEL_1	Hermes excels at character consistency
Advanced Topics	MODEL_1	MODEL_2	Fast bucketing + larger model for depth

Environment Variables

Models are configured via environment variables in vars.sh:

# MODEL_1 - Hermes (always available, default)
export MODEL_ENDPOINT_1=http://localhost:8080/v1
export MODEL_API_KEY_1=your-api-key

# MODEL_2 - Additional model (optional)
export MODEL_ENDPOINT_2=http://localhost:8081/v1
export MODEL_API_KEY_2=your-api-key

# MODEL_3 - Qwen3-Coder (recommended for programming)
export MODEL_ENDPOINT_3=http://localhost:8082/v1
export MODEL_API_KEY_3=your-api-key

Example: Programming Activity

# research/activity37-programming-languages.yaml
classifier_model: "MODEL_1"  # Hermes for fast classification
feedback_model: "MODEL_3"    # Qwen3-Coder-30B for code generation

sections:
  - section_id: "hello_world"
    steps:
      - step_id: "write_hello"
        question: "Write a Hello World program in your chosen language"
        tokens_for_ai: |
          Get the student's chosen language from metadata (programming_language).
          Evaluate their code in THAT specific language.
        feedback_tokens_for_ai: |
          Provide detailed feedback on their code syntax and style.
          Generate example code if they need help.

Activity YAML Validation

Validator Location: activity_yaml_validator.py

Validate Activities:

python activity_yaml_validator.py research/activity*.yaml

Model Field Validation:

• classifier_model (optional, string): Activity or step-level
• feedback_model (optional, string): Activity or step-level
• Both default to "MODEL_1" if not specified
• Can reference MODEL_1, MODEL_2, MODEL_3, etc.

Testing Activities

CLI simulation tool supports model configuration:

source vars.sh
python research/guarded_ai.py research/activity37-programming-languages.yaml
# Uses MODEL_1 for classification, MODEL_3 for code feedback

Model Setup: Qwen3-Coder-30B (MODEL_3)

Why Qwen3-Coder?

• 30B parameters (much smarter for code)
• Trained on 100+ programming languages
• Q4_K_M quantization (~20GB RAM)
• Perfect for activity37 (universal programming activity)

Setup with llama.cpp:

# Download
huggingface-cli download unsloth/Qwen3-Coder-30B-A3B-Instruct-GGUF \
  Qwen3-Coder-30B-A3B-Instruct-Q4_K_M.gguf

# Run server (GPU acceleration)
llama-server -m Qwen3-Coder-30B-A3B-Instruct-Q4_K_M.gguf \
  --host 0.0.0.0 --port 8082 -ngl 99

# Configure in vars.sh
export MODEL_ENDPOINT_3=http://localhost:8082/v1
export MODEL_API_KEY_3=dummy

Setup with ollama:

ollama run unsloth/qwen3-coder:30b-instruct-q4_K_M

# Configure in vars.sh
export MODEL_ENDPOINT_3=http://localhost:11434/v1
export MODEL_API_KEY_3=dummy