← All changes | classes/mcp.php +10 -158 0.5.0 → 0.4.3 View file →

		@@ -13,116 +13,20 @@
13	13
14	14	public function init() {
15	15	global $mwcode, $mwai;
16	16	$this->api = $mwcode;
17		-
18		- // Nothing to do without AI Engine's MCP server.
19		- if ( !isset( $mwai ) ) {
20		- return;
	17	+
	18	+ // Only register MCP if enabled AND AI Engine is available
	19	+ if ( $this->core->get_option( 'mcp_support', false ) && isset( $mwai ) ) {
	20	+ // Register MCP tools
	21	+ add_filter( 'mwai_mcp_tools', array( $this, 'register_tools' ) );
	22	+
	23	+ // Handle MCP tool execution
	24	+ add_filter( 'mwai_mcp_callback', array( $this, 'handle_tool_execution' ), 10, 4 );
21	25	}
22		-
23		- // Two independent surfaces share AI Engine's MCP server:
24		- // - the management/internal API (master switch: the 'mcp_support' option)
25		- // - individual Callable functions opted-in per snippet (the 'functionMcp' flag)
26		- // Either one alone is enough to justify hooking the filters.
27		- add_filter( 'mwai_mcp_tools', array( $this, 'register_tools' ) );
28		- add_filter( 'mwai_mcp_callback', array( $this, 'handle_tool_execution' ), 10, 4 );
29	26	}
30		-
	27	+
31	28	public function register_tools( $tools ) {
32		- // Individual Callable functions that opted in to MCP, exposed as first-class tools.
33		- $tools = $this->register_function_tools( $tools );
34		-
35		- // Code Engine's management/internal API (Settings > For Developers > MCP Support).
36		- if ( $this->core->get_option( 'mcp_support', false ) ) {
37		- $tools = $this->register_management_tools( $tools );
38		- }
39		-
40		- return $tools;
41		- }
42		-
43		- /**
44		- * Map a Code Engine argument type to a JSON Schema type.
45		- * Returns null for 'mixed'/unknown so the schema leaves the type open.
46		- */
47		- private function mcp_type( $type ) {
48		- switch ( $type ) {
49		- case 'number': return 'number';
50		- case 'boolean': return 'boolean';
51		- case 'array': return 'array';
52		- case 'object': return 'object';
53		- case 'string': return 'string';
54		- default: return null;
55		- }
56		- }
57		-
58		- /**
59		- * Return the active Callable (function) snippets that opted in to MCP exposure.
60		- */
61		- private function get_mcp_functions() {
62		- global $mwcode;
63		- if ( !isset( $mwcode ) || !method_exists( $mwcode, 'getSnippets' ) ) {
64		- return [];
65		- }
66		- $functions = $mwcode->getSnippets( true, 'function' );
67		- if ( empty( $functions ) ) {
68		- return [];
69		- }
70		- return array_values( array_filter( $functions, function ( $fn ) {
71		- return !empty( $fn['functionMcp'] ) && !empty( $fn['functionName'] );
72		- } ) );
73		- }
74		-
75		- /**
76		- * Register each opted-in Callable function as its own MCP tool, named after the
77		- * function, with an input schema derived from its declared arguments.
78		- */
79		- public function register_function_tools( $tools ) {
80		- foreach ( $this->get_mcp_functions() as $fn ) {
81		- $properties = [];
82		- $required = [];
83		-
84		- $argsDict = isset( $fn['functionArgsDict'] ) && is_array( $fn['functionArgsDict'] ) ? $fn['functionArgsDict'] : [];
85		- foreach ( $argsDict as $argName => $arg ) {
86		- $name = ltrim( $argName, '$' );
87		- if ( $name === '' ) {
88		- continue;
89		- }
90		- $prop = [];
91		- $type = $this->mcp_type( $arg['type'] ?? 'string' );
92		- if ( $type !== null ) {
93		- $prop['type'] = $type;
94		- }
95		- if ( !empty( $arg['desc'] ) ) {
96		- $prop['description'] = $arg['desc'];
97		- }
98		- $properties[ $name ] = $prop;
99		- if ( !empty( $arg['required'] ) ) {
100		- $required[] = $name;
101		- }
102		- }
103		-
104		- $schema = [
105		- 'type' => 'object',
106		- // Cast so an argument-less function still serializes as {} and not [].
107		- 'properties' => (object) $properties,
108		- ];
109		- if ( !empty( $required ) ) {
110		- $schema['required'] = $required;
111		- }
112		-
113		- $tools[] = [
114		- 'name' => $fn['functionName'],
115		- 'description' => !empty( $fn['description'] ) ? $fn['description'] : ( 'Code Engine function: ' . $fn['functionName'] ),
116		- 'category' => 'Code Engine (Functions)',
117		- 'inputSchema' => $schema,
118		- 'annotations' => [ 'openWorldHint' => true ],
119		- ];
120		- }
121		- return $tools;
122		- }
123		-
124		- public function register_management_tools( $tools ) {
125	29	// Get Snippet
126	30	$tools[] = [
127	31	'name' => 'mwcode_get_snippet',
128	32	'description' => 'Get a Code Engine snippet by its ID',
		@@ -298,12 +202,8 @@
298	202	'type' => 'string',
299	203	'enum' => ['dynamic', 'static'],
300	204	'description' => 'Behavior for function snippets'
301	205	],
302		- 'mcp' => [
303		- 'type' => 'boolean',
304		- 'description' => 'For function snippets: expose this function as its own MCP tool in AI Engine, named after the function and callable directly by external agents. Defaults to false.'
305		- ],
306	206	'tags' => [
307	207	'type' => 'array',
308	208	'description' => 'Array of tags',
309	209	'items' => [ 'type' => 'string' ]
		@@ -389,12 +289,8 @@
389	289	'behavior' => [
390	290	'type' => 'string',
391	291	'enum' => ['dynamic', 'static']
392	292	],
393		- 'mcp' => [
394		- 'type' => 'boolean',
395		- 'description' => 'For function snippets: expose this function as its own MCP tool in AI Engine, named after the function and callable directly by external agents.'
396		- ],
397	293	'intervalHours' => [ 'type' => 'integer' ],
398	294	'intervalMinutes' => [ 'type' => 'integer' ]
399	295	]
400	296	]
		@@ -580,58 +476,14 @@
580	476
581	477	return $tools;
582	478	}
583	479
584		- /**
585		- * Execute a Callable function exposed via MCP. Returns $result unchanged when the
586		- * tool name does not match one of our opted-in functions, so the filter chain
587		- * continues to the management tools (and other plugins).
588		- */
589		- private function handle_function_execution( $result, $tool, $args ) {
590		- $match = null;
591		- foreach ( $this->get_mcp_functions() as $fn ) {
592		- if ( $fn['functionName'] === $tool ) {
593		- $match = $fn;
594		- break;
595		- }
596		- }
597		- if ( $match === null ) {
598		- return $result;
599		- }
600		-
601		- if ( !$this->api ) {
602		- return [ 'success' => false, 'error' => 'Code Engine API not initialized' ];
603		- }
604		-
605		- // getSnippets() rows expose the database id as 'id' (function metadata uses 'snippetId').
606		- $snippetId = $match['id'] ?? $match['snippetId'] ?? null;
607		-
608		- try {
609		- $output = $this->api->executeSnippet( $snippetId, is_array( $args ) ? $args : [] );
610		- return [ 'success' => true, 'data' => $output ];
611		- }
612		- catch ( Exception $e ) {
613		- return [ 'success' => false, 'error' => $e->getMessage() ];
614		- }
615		- }
616		-
617	480	public function handle_tool_execution( $result, $tool, $args, $id ) {
618		- // Individual Callable functions exposed via MCP take priority (named after the function).
619		- $handled = $this->handle_function_execution( $result, $tool, $args );
620		- if ( $handled !== $result ) {
621		- return $handled;
622		- }
623		-
624		- // Management/internal API tools are gated behind the master switch.
625		- if ( !$this->core->get_option( 'mcp_support', false ) ) {
626		- return $result;
627		- }
628		-
629	481	// Only handle our tools
630	482	if ( strpos( $tool, 'mwcode_' ) !== 0 ) {
631	483	return $result;
632	484	}
633		-
	485	+
634	486	// Ensure API is initialized
635	487	if ( !$this->api ) {
636	488	return [ 'success' => false, 'error' => 'Code Engine API not initialized' ];
637	489	}