code-graph

Index and query a persistent code graph for symbol lookup and blast-radius analysis.

Updated Apr 21, 2026

Search Tags:#mcp #blast-radius #dependency-analysis #code-graph #symbol-lookup #codebase-memory

Ready to run

npx skills add https://github.com/joshuakessell/cornerstone --skill code-graph

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: code-graph
Source: https://github.com/joshuakessell/cornerstone/tree/main/.claude/skills/code-graph
Command: npx skills add https://github.com/joshuakessell/cornerstone --skill code-graph

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a persistent code graph to accelerate navigation, symbol lookup, and impact analysis in large codebases, reducing reliance on manual grep and file reads.

Core Features & Use Cases

Graph-first navigation: query codebase-memory-mcp for instant symbol lookup and function search.
Dependency and blast radius analysis: trace dependencies and understand change impact without scanning files.
Multi-language support: works across languages via MCP-backed graph.
Use case: onboarding, planning, and code exploration.

Quick Start

Query the graph to locate a symbol using search_graph before reading the full source file.

Frequently Asked Questions about code-graph

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I analyze blast radius and trace dependencies in a large codebase without scanning files?▼

Blast-radius analysis is performed by indexing a persistent code graph and using the trace_call_path tool to instantly trace dependencies and understand change impact without manual file scanning.

What is the best way to do sub-ms symbol lookup across multi-language repositories?▼

Sub-ms symbol lookup is achieved by querying a persistent MCP-backed code graph using the search_graph tool, enabling instant function search and navigation across large multi-language repositories.

Do I need a specific MCP server to enable code graph navigation and impact assessment?▼

Yes, code graph navigation requires the codegraph MCP server to be accessible, providing the persistent graph index needed for sub-ms symbol lookup and impact assessment.

How does code graph navigation compare to manual grep for feature planning and onboarding?▼

Code graph navigation replaces manual grep by providing instant symbol lookup and dependency tracing via a persistent graph, yielding faster architectural understanding for onboarding and feature planning.

Can I get a code snippet directly from the graph after locating a function?▼

Yes, after using search_graph to locate a symbol, you can use the get_code_snippet tool to retrieve the relevant code snippet directly from the indexed graph.

When should I not use a persistent code graph for codebase exploration?▼

A persistent code graph may not suit tiny repositories or single-file edits where manual grep is faster, as its value comes from indexing large multi-language repositories for complex impact assessment.