code-ownership-audit: Locally Determining Originality and Derivative Works in Python Code

The DeepSeek Harness plugin `code-ownership-audit` uses purely local AST-based static analysis to solve the challenge of identifying legal code ownership after introducing open-source code. The tool relies on no third-party libraries or LLMs, supports both Agent Skill and Plugin forms, and features zero privacy leakage and a pure ESM engineering design. It offers a free preview mode that outputs a risk summary, as well as a paid full version that includes line numbers, remediation suggestions, and x402 payment signature verification. It can run offline and is applicable to scenarios such as open-source onboarding, clean-room rewrites, and compliance audits. The tool is intended to assist with technical fact-finding, but it does not constitute legal advice.