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fix: use text/html;profile=mcp-app MIME type for MCP Apps resources (#577)

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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>
This commit is contained in:
Romuald Członkowski
2026-02-07 15:18:50 +01:00
committed by GitHub
parent 1b328d8168
commit 38aa70261a
4 changed files with 13 additions and 5 deletions
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4
tests/unit/mcp/ui/app-configs.test.ts
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@@ -65,9 +65,9 @@ describe('UI_APP_CONFIGS', () => {
}
});
it('should have consistent mimeType of text/html', () => {
it('should have consistent mimeType of text/html;profile=mcp-app', () => {
for (const config of UI_APP_CONFIGS) {
expect(config.mimeType).toBe('text/html');
expect(config.mimeType).toBe('text/html;profile=mcp-app');
}
});