# MCP Servers by modelcontextprotocol.io

Every MCP server published by modelcontextprotocol.io that Pod indexes.

3 servers, ordered by decision readiness and adoption — GitHub stars and npm downloads where available, then reported issue volume. Pod has connected to 3 of them; the rest are publisher-reported and unverified.

## [PDF Viewer](/mcp/pdf-viewer)

Demo interactive PDF viewer that renders PDFs from a limited set of allowed URLs (e.g., arxiv.org) for security reasons.

1 tools reported — Live. Answered with 4 tools.

## [Play Sheet Music](/mcp/play-sheet-music)

Ask Claude to generate and play some sheet music for you with a visual component.

Live. Answered with 1 tools.

## [Three.js 3D Viewer](/mcp/three-js-3d-viewer)

Demo interactive 3D viewer powered by Three.js, a popular JavaScript library for rendering 3D graphics in the browser. Generates and displays 3D scenes, models, and animations directly in the conversation.

Live. Answered with 2 tools.

## For agents

This page has a [Markdown](/mcp/by/modelcontextprotocol-io.md) and a [JSON](/mcp/by/modelcontextprotocol-io.json) twin. Pod is also queryable over MCP at `https://api.askpod.ai/mcp/read`.