Visualize Any Codebase as an Interactive Call Graph - Free VS Code Extension
CallSight is a free, fully local VS Code extension that turns any
codebase into an interactive call-flow diagram — no cloud, no LLM,
no subscription.
See every function, every call relationship, and every execution
flow at a glance. Built for developers who want to understand
large codebases fast — or verify what their AI agent just changed.
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FEATURES
✅ Interactive call-flow diagrams for any codebase
✅ Supports TypeScript, JavaScript, TSX, JSX, Python and Go
✅ Coupling heatmap — spot God Functions instantly
✅ Impact radius — see what breaks before you merge
✅ Circular dependency detection
✅ Git diff overlay — visualise exactly what changed
✅ 100% local — your code never leaves your machine
✅ Free and open source (MIT)
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🔗 LINKS
VS Code Marketplace → CallSight at Visual Studio Marketplace
GitHub → callsight-vscode : devricky
npm (@codeflow-map/core)
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⏱️ TIMESTAMPS
0:07 - Git Diff
0:45 - Function Impact Radius
1:07 - Removed edge example in git comparision
1:18 - FastAPI Repository example
1:45 - Cyclomatic Complexity Hotspots
1:52 - Circular dependency across functions
2:07 - Module Clusters
2:23 - ReactJS Example
2:55 - Handling Massive Repositories
3:29 - CallSight Extension
Sound Attribute :
Jay Someday - Weightless
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