feat(apps): implement mcp-apps extension#21
Merged
dbernheisel merged 1 commit intomainfrom Apr 30, 2026
Merged
Conversation
dbernheisel
force-pushed
the
dbern/mcp-apps
branch
8 times, most recently
from
1be1857 to
254ed98
Compare
dbernheisel
force-pushed
the
dbern/mcp-apps
branch
from
254ed98 to
7da1cc0
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Implements the MCP Apps extension — interactive HTML interfaces delivered by the MCP server and rendered inside host applications (Claude Desktop, Cursor, etc.) as sandboxed iframes.
Phantom.Appbehaviour for defining apps with Plug-style pipelines (layouts, CSP, etc.), implemented viamount/2andrender/1app: MyApp.SomeApp, which auto-registers aui://resource serving the app's HTMLPhantom.App.CSPplug for fine-grained Content-Security-Policy control (connect domains, etc.)guides/mcp_apps.mdwalks through building an app end-to-endResolves #16