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fix: use text/html;profile=mcp-app MIME type for MCP Apps resources

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The ext-apps spec requires RESOURCE_MIME_TYPE (text/html;profile=mcp-app)
for hosts to recognize resources as MCP Apps. Without the profile parameter,
Claude Desktop/web fails with "Failed to load MCP App: the resource may
exceed the 5 MB size limit."

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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czlonkowski
2026-02-07 21:43:30 +08:00
parent 1b328d8168
commit 2d94d7bb50
4 changed files with 13 additions and 5 deletions
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@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
## [2.34.3] - 2026-02-07
### Fixed
- **MCP Apps: Use correct MIME type for ext-apps spec**: Changed resource MIME type from `text/html` to `text/html;profile=mcp-app` (the `RESOURCE_MIME_TYPE` constant from `@modelcontextprotocol/ext-apps`). Without this profile parameter, Claude Desktop/web fails to recognize resources as MCP Apps and shows "Failed to load MCP App: the resource may exceed the 5 MB size limit."
Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
## [2.34.2] - 2026-02-07
### Fixed