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ck:gkg

Semantic code analysis with GitLab Knowledge Graph. Use for go-to-definition, find-usages, impact analysis, architecture visualization. Supports Ruby, Java, Kotlin, Python, TypeScript/JavaScript.

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Works withGitLab
See how to install

Files included (5)

  • SKILL.md2.4 KB
  • references/cli-commands.md1.8 KB
  • references/http-api.md1.6 KB
  • references/language-support.md1.7 KB
  • references/mcp-tools.md2.2 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

GitLab Knowledge Graph (GKG)

Semantic code analysis engine using AST parsing and KuzuDB graph database. Enables IDE-like code navigation for AI assistants.

Status: Public beta | Requires: Git repository | Storage: ~/.gkg/

When to Use

  • Find all usages of a function/class across codebase
  • Go-to-definition for symbols
  • Impact analysis before refactoring
  • Generate architecture diagrams
  • RAG-enhanced code understanding

Use repomix instead for: quick context dumps, any-language support, remote repos, token counting.

Quick Start

# Check installation
gkg --version

# Index current repo
gkg index

# Start server (for API/MCP)
gkg server start

# Stop before re-indexing
gkg server stop

Installation

# macOS/Linux
curl -fsSL https://gitlab.com/gitlab-org/rust/knowledge-graph/-/raw/main/install.sh | bash

# Windows (PowerShell)
irm https://gitlab.com/gitlab-org/rust/knowledge-graph/-/raw/main/install.ps1 | iex

Core Workflows

Index and Query

gkg index /path/to/project --stats
gkg server start
# Query via HTTP API at http://localhost:27495

Find Symbol Usages

  1. Index project: gkg index
  2. Start server: gkg server start
  3. Use MCP tool get_references or HTTP API /api/graph/search

Impact Analysis

  1. Index affected repos
  2. Query get_references for changed symbols
  3. Review all call sites before refactoring

Language Support

LanguageCross-file Refs
Ruby✅ Full
Java✅ Full
Kotlin✅ Full
Python🚧 In progress
TypeScript🚧 In progress
JavaScript🚧 In progress

References

Key Constraints

  • Must stop server before re-indexing
  • Requires initialized Git repository
  • Languages not connected across repos (yet)
  • TS/JS/Python cross-file refs incomplete

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