cohort-heatmap-server.md

Cohort Heatmap MCP App

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from"modelcontextprotocol"

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Cohort Heatmap Server is an official ext-apps example. It turns structured cohort data into an interactive retention heatmap served through an MCP Apps UI resource.

Not for: A complete product-analytics backend. You still need trustworthy cohort definitions and source data; the example focuses on presentation and interaction.

Source and setup verified on 2026-11-03

Data & Analytics

analyticsheatmapretentioncohort

View on GitHub

Quick facts

Provider: Model Context Protocol project (official example)
Visualization: Interactive cohort retention heatmap
Protocol: MCP Apps ui:// resource
Repository stars: 3,042 on 2026-11-03

What you can do

Display retention by cohort and period
Inspect cells interactively
Receive structured cohort data from a tool result

Requirements

Node.js and npm
An MCP Apps-compatible host

setup.md

# 1. Use the official example

Clone ext-apps, install the monorepo dependencies and run examples/cohort-heatmap-server using its current README command.

# Official example

https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/cohort-heatmap-server

The example repository is the source of truth for its start command.

Always confirm the latest setup instructions with the maintainer before installing.

>Questions

Is Cohort Heatmap MCP App an MCP App with inline UI?

Yes. The maintainer's source declares an MCP UI resource and links it to a tool result. It renders inline only in hosts that support MCP Apps.

Where were these details checked?

Against the maintainer's README, source, or official documentation at https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/cohort-heatmap-server, plus the GitHub API where a repository is available.