---
title: "MCP Apps: definition and example | Agent MCP Directory"
description: "MCP Apps: An MCP extension in which a tool points to a ui:// resource the host renders as a sandboxed View. Defined with a sourced example."
canonical: https://agentmcpdirectory.com/glossary/mcp-apps
site: "Agent MCP Directory"
last_updated: 2026-11-04
section: "Glossary"
---

# MCP Apps: definition and example | Agent MCP Directory

> MCP Apps: An MCP extension in which a tool points to a ui:// resource the host renders as a sandboxed View. Defined with a sourced example.

Source: https://agentmcpdirectory.com/glossary/mcp-apps
Site: Agent MCP Directory
Last reviewed: 2026-11-04

# MCP Apps

MCP Apps: An MCP extension in which a tool points to a ui:// resource the host renders as a sandboxed View. Example: Vercel MCP renders deployments as an MCP Apps card in ChatGPT. Next in the glossary is MCP client: The connector inside a host application that holds one connection to one MCP server.

## Definition

An MCP extension in which a tool points to a ui:// resource the host renders as a sandboxed View.

## Example, with source

Vercel MCP renders deployments as an MCP Apps card in ChatGPT. ([vercel.com](https://vercel.com/changelog/monitor-vercel-deployments-in-chatgpt), read 4 November 2026)

## Where it appears on this site

-   [MCP](https://agentmcpdirectory.com/standards/mcp/)
-   [Tool descriptions and agent success](https://agentmcpdirectory.com/guides/tool-descriptions-and-agent-success/)

## Neighbouring terms

-   [HTTP+SSE transport](https://agentmcpdirectory.com/glossary/http-sse-transport/): The older MCP HTTP transport with a separate SSE endpoint, deprecated since 2025-03-26 and reclassified Deprecated in 2026-07-28.
-   [MCP client](https://agentmcpdirectory.com/glossary/mcp-client/): The connector inside a host application that holds one connection to one MCP server.
-   [MCP gateway](https://agentmcpdirectory.com/glossary/mcp-gateway/): A proxy in front of MCP servers that authenticates callers, injects upstream credentials, filters tools and logs calls.

Edition

4 November 2026

Method

[How rows are verified](https://agentmcpdirectory.com/method/)

Data

[CSV and JSON](https://agentmcpdirectory.com/data/)

Markdown

[This page as markdown](https://agentmcpdirectory.com/glossary/mcp-apps/index.md)

## Sources

-   [Source for the MCP Apps example](https://vercel.com/changelog/monitor-vercel-deployments-in-chatgpt), read 4 November 2026

Last reviewed 4 November 2026