Roslyn-based semantic indexer 'Graphify C#' released for C# coding agents

Semantic Indexing for Coding Agents

Graphify C# is a free headless indexer developed to provide the semantic navigation features of Rider/ReSharper to coding agents such as Codex and Claude Code. It utilizes Roslyn and MSBuild to convert C# source code into JSON containing deterministic semantic evidence (callers, references, implementations, inheritance, etc.). It addresses the limitations of text-search-based overload/generic ambiguity and project separation, helping agents understand accurate code structures.

Key Features and Integration

• Accurate Relationship Extraction: Through Roslyn-based declaration parsing, it generates explicit edges for inherits, implements, overrides, etc., while maintaining project/TFM identifiers.
• Agent Integration: Install the skill file (SKILL.md) for Codex or Claude Code to use it immediately after restarting the session.
• Flexible Queries: The generated JSON can be queried directly with jq, Python, C#, etc., or integrated with the higher-level workflow tool graphify query.
• Evidence Provision: The tool provides only static analysis facts, while semantic interpretation, such as determining test-only code or deletion candidates, is performed by the agent or downstream consumers.