| 1: | <?php |
| 2: | |
| 3: | declare(strict_types=1); |
| 4: | |
| 5: | /** |
| 6: | * This file is part of the Nexus MCP SDK package. |
| 7: | * |
| 8: | * (c) 2025 John Paul E. Balandan, CPA <paulbalandan@gmail.com> |
| 9: | * |
| 10: | * For the full copyright and license information, please view |
| 11: | * the LICENSE file that was distributed with this source code. |
| 12: | */ |
| 13: | |
| 14: | namespace Nexus\Mcp\Schema\Request; |
| 15: | |
| 16: | use Nexus\Mcp\Schema\Arrayable; |
| 17: | use Nexus\Mcp\Schema\ClientCapabilities; |
| 18: | use Nexus\Mcp\Schema\Implementation; |
| 19: | use Nexus\Mcp\Schema\Message\JsonRpcRequest; |
| 20: | use Nexus\Mcp\Schema\Message\RequestId; |
| 21: | use Nexus\Mcp\Schema\ProtocolVersion; |
| 22: | |
| 23: | /** |
| 24: | * This request is sent from the client to the server when it first connects, asking it to begin initialization. |
| 25: | * |
| 26: | * @extends JsonRpcRequest<array{ |
| 27: | * jsonrpc: '2.0', |
| 28: | * id: int|non-empty-string, |
| 29: | * method: 'initialize', |
| 30: | * params: array{ |
| 31: | * _meta?: array<string, mixed>, |
| 32: | * capabilities: template-type<ClientCapabilities, Arrayable, 'T'>, |
| 33: | * clientInfo: template-type<Implementation, Arrayable, 'T'>, |
| 34: | * protocolVersion: non-empty-string, |
| 35: | * }, |
| 36: | * }> |
| 37: | */ |
| 38: | final readonly class InitializeRequest extends JsonRpcRequest implements ClientRequest |
| 39: | { |
| 40: | /** |
| 41: | * @param ClientCapabilities $capabilities Capabilities a client may support. Known capabilities are defined here, |
| 42: | * in this schema, but this is not a closed set: any client can define its |
| 43: | * own, additional capabilities. |
| 44: | * @param Implementation $clientInfo Describes the name and version of an MCP implementation, with an optional |
| 45: | * title for UI representation. |
| 46: | * @param ProtocolVersion $protocolVersion The latest version of the Model Context Protocol that the client |
| 47: | * supports. The client MAY decide to support older versions as well. |
| 48: | * @param null|array<string, mixed> $meta Reserved by MCP to allow clients and servers to attach |
| 49: | * additional metadata to their interactions. |
| 50: | */ |
| 51: | public function __construct( |
| 52: | RequestId $id, |
| 53: | ClientCapabilities $capabilities, |
| 54: | Implementation $clientInfo, |
| 55: | ProtocolVersion $protocolVersion, |
| 56: | ?array $meta = null, |
| 57: | ) { |
| 58: | parent::__construct(self::JSON_RPC_VERSION, $id, 'initialize', array_filter([ |
| 59: | '_meta' => $meta, |
| 60: | 'capabilities' => $capabilities->toArray(), |
| 61: | 'clientInfo' => $clientInfo->toArray(), |
| 62: | 'protocolVersion' => $protocolVersion->__toString(), |
| 63: | ], static fn(mixed $value): bool => null !== $value)); |
| 64: | } |
| 65: | } |
| 66: |