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[Schema][Client][Server] Close MCP Apps gaps: extension negotiation checks (#429)

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* [Schema][Client][Server] Close MCP Apps gaps: extension negotiation checks

Add ClientGateway::supportsExtension(), Client\Builder::enableExtension() and
ClientCapabilities::withExtensions(); introduce side-agnostic ExtensionInterface
and deprecate ServerExtensionInterface; document attribute-based UI linkage.

* Drop ServerExtensionInterface in favour of ExtensionInterface
This commit is contained in:
Christopher Hertel 2026-08-18 01:46:53 +02:00 • committed by GitHub
commit 6f58fe596a
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1 changed files with 273 additions and 21 deletions
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4
tests/Unit/Schema/Extension/Apps/McpAppsTest.php
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@ -17,14 +17,16 @@ use Mcp\Schema\Extension\Apps\UiResourceContentMeta;
use Mcp\Schema\Extension\Apps\UiResourceCsp;
use Mcp\Schema\Extension\Apps\UiResourcePermissions;
use Mcp\Schema\Extension\Apps\UiToolMeta;
use Mcp\Schema\Extension\ExtensionInterface;
use PHPUnit\Framework\TestCase;
class McpAppsTest extends TestCase
{
public function testServerExtensionInterface(): void
public function testExtensionInterface(): void
{
$extension = new McpApps();
$this->assertInstanceOf(ExtensionInterface::class, $extension);
$this->assertSame('io.modelcontextprotocol/ui', $extension->getId());
$this->assertSame(['mimeTypes' => ['text/html;profile=mcp-app']], $extension->getCapabilities());
}