File Core/Schema/Request/CreateMessageRequest.php

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	/**
6:	* This file is part of the Nexus MCP SDK package.
7:	*
8:	* (c) 2026 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\Core\Schema\Request;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\JsonRpc\JsonRpcRequest;
18:	use Nexus\Mcp\Core\Schema\RequestId;
19:	use Nexus\Mcp\Core\Schema\RequestParams\CreateMessageRequestParams;
20:
21:	/**
22:	* A request from the server to sample an LLM via the client. The client has full discretion over
23:	* which model to select. The client should also inform the user before beginning sampling, to
24:	* allow them to inspect the request (human in the loop) and decide whether to approve it.
25:	*
26:	* @property-read CreateMessageRequestParams $params
27:	*
28:	* @extends JsonRpcRequest<'sampling/createMessage'>
29:	*
30:	* @see https://modelcontextprotocol.io/specification/2025-11-25/schema#createmessagerequest
31:	*/
32:	final readonly class CreateMessageRequest extends JsonRpcRequest implements ServerRequest
33:	{
34:	public function __construct(RequestId $id, CreateMessageRequestParams $params)
35:	{
36:	parent::__construct($id, $params);
37:	}
38:
39:	#[\Override]
40:	public static function getMethod(): string
41:	{
42:	return 'sampling/createMessage';
43:	}
44:
45:	#[\Override]
46:	public static function fromArray(array $data): static
47:	{
48:	Assert::that($data)->hasOffset('id', 'missing the required "id" key.');
49:	$id = $data['id'];
50:	Assert::that($id)->isArrayKey('"id" must be an int or string, {type} given.');
51:
52:	Assert::that($data)->hasOffset('params', 'missing the required "params" key.');
53:	Assert::that($data['params'])
54:	->isArray('"params" must be an object, {type} given.')
55:	->isMap('"params" must be a string-keyed object.')
56:	;
57:
58:	return new self(new RequestId($id), CreateMessageRequestParams::fromArray($data['params']));
59:	}
60:	}
61:

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