Go Playground Validator

The Go Playground Validator analyzes Go source code supplied by users to identify syntax errors, type mismatches, and basic runtime concerns without executing the program. It is designed for developers, instructors, and reviewers who need fast, deterministic feedback on code snippets.
Conceptually, the tool parses the source into an AST, runs a type checker, and optionally performs minimal static checks such as unused imports or simple vet-like hints. It can operate in a module-aware mode when a module context is provided, otherwise it uses a lightweight, self-contained analysis.
Value and use cases: quick syntax checks during iterative coding, classroom exercises, code reviews, and pre-submit checks. Outputs include a structured list of errors, optional warnings, a formatted version of the input, and a summary that explains the result. Distinctive strengths include precise location data, language-version awareness, and a non-execution approach that preserves safety.
Core features and workflow: provide source_code and optional settings (go_version, build_tags, module_mode); run to obtain status, errors, warnings, and formatted_code; adjust inputs based on results and re-run. This supports rapid iteration and improves code quality before integration.
Limitations: it does not compile or run programs, does not fetch remote dependencies by default, and may not fully replicate a complete build environment. It is intended as a first-pass validator integrated into teaching or review workflows.