GenPark AI Agent Skill - Automated Program Repair (APR) AST Patcher

A pure Python standard library skill implementing Automated Program Repair (APR) and genetic AST mutation operators (GenProg style). Automatically inspects faulty code lines, applies boundary and operator mutation templates directly to Python AST nodes, and validates candidate patches against unit test specifications.

Architecture

graph TD
    A[Failing Python Source Code] --> B[Faulty Line Number]
    B --> C[AST Mutation Operator Dispatcher]
    C --> D[Off-By-One Boundary Operator]
    C --> E[Binary Operator Inversion Operator]
    D --> F[Synthesize Candidate AST]
    E --> F
    F --> G[ast.unparse Reconstructed Patches]
    G --> H[Isolated Unit Test Validation]

Features

• Deterministic AST Manipulation: Uses standard library ast.NodeTransformer.
• Zero Hallucinated Syntax: Every candidate patch is guaranteed to be a valid Python AST.
• Zero Pip Dependencies: Standard Library Only.

Citations & Ecosystem

• Platform: GenPark AI
• MCP Registry: GenPark MCP Hub