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Aug 28, 2026 · Catalog foundation is up

Atomic capability · interfaces

MCP AppsMCP Apps 2026-01-26

Render an interactive interface returned by an MCP server inside the product.

MCP Apps: 1 supported, 3 partial, 0 unsupported, 27 unreviewed across 31 cataloged products.

Markdown · JSON

Current evidence by product

Can my agent use MCP Apps?

Read across for the answer. 4 of 31 current product columns have reviewed evidence; unreviewed does not mean unsupported.

Known issues (0)Report an issue
  • Supported1
  • Partial3
  • Unsupported0
  • Unknown27
  • Not applicable0

Web

9 products
ClaudeClaude
P2Partial
Observed 2026-08-28Current · 2 conditions
?Unknown
No source reviewedPreview record
Report this result

Desktop

13 products
ClaudeClaude
P3Partial
Docs checked 2026-08-28Current · 1 condition
?Unknown
No source reviewedPreview record
Report this result

CLI

9 products

Unknown means no public evidence has been reviewed for that product and capability. It does not mean unsupported.

How statuses are assigned

Definition and scope

What this capability means

MCP Apps is the official Model Context Protocol extension for interactive interfaces returned by tools. A compatible host fetches a declared UI resource, renders it in a sandboxed frame, and mediates communication between the interface and MCP tools.

This row is narrower than ordinary MCP tool calling. A harness can support MCP tools while leaving this UI extension unknown. The first wave sources only hosts named by current product or protocol documentation.

Traceable compatibility

Assertion ledger

Documentation evidence only. No runtime conformance test is implied.

ChatGPTweb · current
Partial
Target
2026-08-28 hosted documentation observation · hosted-observation
Environment
hosted-default
Observed
2026-08-28
  • previewdeveloper mode and full MCP are beta
  • planavailability varies by ChatGPT plan
  • policyworkspace role and administrator controls apply
Evidence
Copilot Chatdesktop · current
Supported
Target
current VS Code documentation · dated-documentation
Environment
local-default
Observed
2026-08-28

No additional condition is recorded for this statement.

Evidence
  1. 1. Evidence checked 2026-08-28: ChatGPT can run MCP-backed apps with interactive in-chat UI, but developer mode and full MCP availability are limited by plan, workspace role, and beta rollout.
  2. 2. Evidence checked 2026-08-28: the official MCP Apps client list names Claude, while Anthropic limits custom remote connectors to paid plans and currently labels them beta.
  3. 3. Evidence checked 2026-08-28: the official MCP Apps client list names Claude Desktop as a host; connector and extension availability still depends on configuration and administrator policy.
  4. 4. Evidence checked 2026-08-28: the VS Code MCP developer guide lists MCP Apps among the protocol features implemented for GitHub Copilot agent mode.