File Core/Schema/RequestParams/CallToolRequestParams.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\RequestParams;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Arrayable;
18:	use Nexus\Mcp\Core\Schema\Elicitation\ElicitResult;
19:	use Nexus\Mcp\Core\Schema\RequestMetaObject;
20:	use Nexus\Mcp\Core\Schema\Result\InputResponse;
21:	use Nexus\Mcp\Core\Validation\IdentifierNameValidator;
22:
23:	/**
24:	* Parameters for a `tools/call` request.
25:	*
26:	* @extends InputResponseRequestParams<array{
27:	* _meta: template-type<RequestMetaObject, Arrayable, 'T'>,
28:	* name: non-empty-string,
29:	* arguments?: array<string, mixed>,
30:	* inputResponses?: array<string, array<string, mixed>>,
31:	* requestState?: string,
32:	* }>
33:	*
34:	* @see https://modelcontextprotocol.io/specification/draft/schema#calltoolrequestparams
35:	*/
36:	final readonly class CallToolRequestParams extends InputResponseRequestParams
37:	{
38:	/**
39:	* @var non-empty-string
40:	*/
41:	public string $name;
42:
43:	/**
44:	* @var null\|array<string, mixed>
45:	*/
46:	public ?array $arguments;
47:
48:	/**
49:	* @param null\|array<string, mixed> $arguments
50:	* @param null\|array<string, InputResponse> $inputResponses
51:	*/
52:	public function __construct(
53:	string $name,
54:	RequestMetaObject $meta,
55:	?array $arguments = null,
56:	?array $inputResponses = null,
57:	?string $requestState = null,
58:	) {
59:	IdentifierNameValidator::validate($name, '"params.name"');
60:	Assert::that($arguments)->nullOr()->isMap('"params.arguments" must be a string-keyed map or null.');
61:
62:	$this->name = $name;
63:	$this->arguments = $arguments;
64:
65:	parent::__construct(inputResponses: $inputResponses, requestState: $requestState, meta: $meta);
66:	}
67:
68:	#[\Override]
69:	public static function fromArray(array $data): static
70:	{
71:	Assert::that($data)->hasOffset('name', '"params" is missing the required "name" key.');
72:	$name = $data['name'];
73:	Assert::that($name)->isString('"params.name" must be a string, {type} given.');
74:
75:	$arguments = null;
76:
77:	if (\array_key_exists('arguments', $data)) {
78:	Assert::that($data['arguments'])
79:	->isArray('"params.arguments" must be an object, {type} given.')
80:	->isMap('"params.arguments" must be a string-keyed object.')
81:	;
82:	$arguments = $data['arguments'];
83:	}
84:
85:	$inputResponses = null;
86:
87:	if (\array_key_exists('inputResponses', $data)) {
88:	Assert::that($data['inputResponses'])
89:	->isArray('"params.inputResponses" must be an object, {type} given.')
90:	->isMap('"params.inputResponses" must be a string-keyed object.')
91:	->values()
92:	->isArray('each "params.inputResponses" entry must be an object, {type} given.')
93:	->isMap('each "params.inputResponses" entry must be a string-keyed object.')
94:	;
95:	$inputResponses = array_map(ElicitResult::fromArray(...), $data['inputResponses']);
96:	}
97:
98:	$requestState = null;
99:
100:	if (\array_key_exists('requestState', $data)) {
101:	Assert::that($data['requestState'])->isString('"params.requestState" must be a string, {type} given.');
102:	$requestState = $data['requestState'];
103:	}
104:
105:	Assert::that($data)->hasOffset('_meta', '"params" is missing the required "_meta" key.');
106:	Assert::that($data['_meta'])
107:	->isArray('"params._meta" must be an object, {type} given.')
108:	->isMap('"params._meta" must be a string-keyed object.')
109:	;
110:	$meta = RequestMetaObject::fromArray($data['_meta']);
111:
112:	return new self(
113:	name: $name,
114:	meta: $meta,
115:	arguments: $arguments,
116:	inputResponses: $inputResponses,
117:	requestState: $requestState,
118:	);
119:	}
120:
121:	#[\Override]
122:	public function toArray(): array
123:	{
124:	$data = [
125:	'_meta' => $this->meta->toArray(),
126:	'name' => $this->name,
127:	];
128:
129:	if (null !== $this->arguments && [] !== $this->arguments) {
130:	$data['arguments'] = $this->arguments;
131:	}
132:
133:	if (null !== $this->inputResponses) {
134:	$data['inputResponses'] = array_map(
135:	static fn(InputResponse $response): array => $response->toArray(),
136:	$this->inputResponses,
137:	);
138:	}
139:
140:	if (null !== $this->requestState) {
141:	$data['requestState'] = $this->requestState;
142:	}
143:
144:	return $data;
145:	}
146:	}
147:

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