Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents
Graphify C# is a new tool designed to provide coding agents with compiler-accurate 'Find Usages' capabilities for C# projects. It uses Roslyn and MSBuild to generate a queryable semantic graph of code relationships.
Why it matters
This tool improves the accuracy of AI coding assistants by providing them with deep semantic understanding of codebases rather than simple text matches.
Give coding agents compiler-accurate Find Usages for C#.
graphify-csharp is a free, headless Roslyn/MSBuild indexer that turns C# source into deterministic, queryable semantic evidence: compiler-resolved callers, references, implementations, inheritance, and overrides—even across overloads, generics, and projects.
Think of it as the semantic-navigation slice of Rider/ReSharper, exported for Codex, Claude Code, and other coding agents.
MIT licensed · No IDE · No compiled project DLL required · No database · Graphify optional
A text search can find matching spellings. It cannot reliably tell which overload was bound, which project the caller belongs to, or whether an interface implementation is the symbol you meant.
Graphify C# loads the project through MSBuild and asks Roslyn what every symbol actually means. It emits stable identities and directed relationships that an agent can inspect instead of infer:
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