name: generate-docstrings description: "Create docstrings for functions and classes. Use when documenting code APIs." mcp_fallback: none category: generation tier: 2 user-invocable: false

Generate Docstrings

Write comprehensive docstrings for functions and classes following standard formats (Google, NumPy, reStructuredText).

When to Use

• Adding documentation to undocumented functions
• Improving code documentation completeness
• Ensuring consistent docstring format
• Supporting API documentation generation

Quick Reference

# Google-style docstring format
def matrix_multiply(a: ExTensor, b: ExTensor) -> ExTensor:
    """Multiply two matrices using optimized Mojo kernels.

    Args:
        a: First matrix (shape: m x n)
        b: Second matrix (shape: n x k)

    Returns:
        Product matrix (shape: m x k)

    Raises:
        ValueError: If matrix dimensions don't align for multiplication

    Example:
        ```mojo
        >> a = ExTensor([[1, 2], [3, 4]], DType.float32)
        >>> b = ExTensor([[1, 0], [0, 1]], DType.float32)
        >>> c = matrix_multiply(a, b)
        ```
    """
    ...

Workflow

1. Analyze function: Understand purpose, parameters, return value
2. Choose format: Select docstring style (Google is recommended)
3. Write summary: Clear one-line description
4. Document parameters: Type, description, constraints
5. Document return: Type and description of return value
6. Add examples: Practical usage examples

Output Format

Docstring structure:

• One-line summary
• Extended description (if needed)
• Args section (parameter documentation)
• Returns section (return value documentation)
• Raises section (exceptions)
• Examples section (usage examples)

References

• See generate-api-docs skill for API documentation generation
• See Google Python Style Guide for docstring conventions
• See PEP 257 for Python docstring conventions