OSS Code Review

Purpose & User Intent: The Open Source Code Review Tool analyzes repositories to evaluate license compliance, security posture, licensing risk, and software quality within OSS projects. Target users include software maintainers, security engineers, governance teams, and CI/CD practitioners who assess a candidate dependency, PR, or new release. It is used during pre-merge checks, policy enforcement, or periodic audits to surface actionable findings before changes enter production.
Core Logic & Features: The tool builds a software bill of materials (SBOM), detects licenses via SPDX-compatible mappings, and correlates known vulnerabilities from public advisories. It computes a risk score and highlights high-priority components. Required features: repository access, language-aware parsers, rule engine, and exportable reports. Advanced capabilities (optional) include customizable policy templates, incremental/partial scans, CI integration, remediation guidance, and cross-repository dashboards. Distinct value comes from integrated governance: license triangle, security posture, and maintainability signals in a single pass, reducing cycle time for compliance reviews.
Inputs & Outputs: Inputs include repository_url (string, required), target_branch (string, optional, default main), access_token (string, optional), authentication_type (string, optional), languages (array, e.g., [JavaScript, Python]), include_paths (array, optional). Outputs are summary_report (object) with risk_score and issues, licenses_map (object), remediation_steps (array), and optional sbom (SPDX-like JSON). Validation ensures repo is reachable, tokens valid, and parsers support detected languages; if not, partial results with warnings are returned.
Algorithms & Calculations: Core methods include: SBOM generation; license_detection using SPDX; dependency graph construction; vulnerability matching against CVE advisories; and maintainability heuristics. Risk_score is a weighted combination: 0.4*license_risk + 0.5*security_risk + 0.1*maintainability_risk, rounded to integer. Outputs include per-component risk flags and suggested remediations.
Error & Edge Cases: Handling includes missing or invalid inputs, private repos, expired credentials, API rate limits, and external data unavailability. Incomplete language support yields partial scans with diagnostics. Private repos require valid tokens; network failures produce structured error codes and warnings, not UI prompts.
Industry/Region & Localization: Follows SPDX license data conventions and SBOM formats. Supports common OSS ecosystems and Git hosting providers (GitHub, GitLab, Bitbucket). Localization is textual only; numeric metrics use standard units (0–100 scale) and English-based labels.
Assumptions & Exclusions: Assumes accessible repository data and up-to-date advisories; excludes runtime code execution, dynamic analysis, or embedding code changes. Not a finder of licensing legality; it surfaces policy violations for human review and CI gating.