<?php
declare(strict_types=1);
namespace Butschster\ContextGenerator\McpServer\Action\Tools;
use Butschster\ContextGenerator\McpServer\Registry\McpItemsRegistry;
use Butschster\ContextGenerator\McpServer\Routing\Attribute\Get;
use Butschster\ContextGenerator\McpServer\Tool\Config\ToolDefinition;
use Butschster\ContextGenerator\McpServer\Tool\ToolProviderInterface;
use Mcp\Types\ListToolsResult;
use Mcp\Types\Tool;
use Mcp\Types\ToolInputSchema;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Log\LoggerInterface;
final readonly class ListToolsAction
{
public function __construct(
private LoggerInterface $logger,
private McpItemsRegistry $registry,
private ToolProviderInterface $toolProvider,
) {}
#[Get(path: '/tools/list', name: 'tools.list')]
public function __invoke(ServerRequestInterface $request): ListToolsResult
{
$this->logger->info('Listing available tools');
$tools = $this->registry->getTools();
foreach ($this->toolProvider->all() as $toolDefinition) {
// Create the input schema object based on the tool's schema
$inputSchema = $this->buildInputSchema($toolDefinition);
$tools[] = new Tool(
name: $toolDefinition->id,
inputSchema: $inputSchema,
description: $toolDefinition->description,
);
}
return new ListToolsResult($tools);
}
/**
* Build a ToolInputSchema object from the tool definition's schema.
*/
private function buildInputSchema(ToolDefinition $toolDefinition): ToolInputSchema
{
// If no schema is defined, return an empty schema
if ($toolDefinition->schema === null) {
return new ToolInputSchema();
}
// Convert the tool's schema to array format expected by ToolInputSchema
$schemaData = [
'type' => 'object',
'properties' => $toolDefinition->schema->getProperties(),
];
$required = $toolDefinition->schema->getRequiredProperties();
if (!empty($required)) {
$schemaData['required'] = $required;
}
// Use the fromArray method to create the ToolInputSchema
return ToolInputSchema::fromArray($schemaData);
}
}
