# Per-node cost heatmap

**Category:** Showcases  
**Live demo:** https://xenolithengine.github.io/xenolith-graph/examples/heatmap/  
**Frameworks shipped:** react

## Description

A RAG pipeline with per-node latency badges — cool blue → hot red. Press Pulse to see metrics breathe. Drop-in observability overlay; no OSS competitor ships it.

## Source files

  - [react] demos/HeatmapDemo.tsx

## How to use this example

Open the live demo at https://xenolithengine.github.io/xenolith-graph/examples/heatmap/ to interact with it in the browser. The same source files are
reproduced verbatim in the page so you can copy-paste into your own project. Every example is
self-contained — pick one, copy the files, install `@xenolithengine/graph-editor` + the relevant framework
adapter, and it runs.

## See also

- Full project docs: https://xenolithengine.github.io/xenolith-graph/llms.txt
- All examples (raw): https://xenolithengine.github.io/xenolith-graph/api/graphs.jsonl
- MCP tool catalog: https://xenolithengine.github.io/xenolith-graph/api/mcp-tools.json
- Repository: https://github.com/XenolithEngine/xenolith-graph