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Covers parameter validation, database operations, error handling, service registration, and Moodle coding standards.","davila7\u002Fclaude-code-templates","davila7","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F6216945?v=4","01M6ADEWWFPS191NFM0Y1EX1JH","Daniel Avila","01M6ADJHGM78PHQRD3XZTFDVKK",33481,"MIT","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fmoodle-external-api-development\u002FSKILL.md",[18,23,26,31],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000008","测试与质量","SCENARIO","使用场景",{"categoryNo":24,"categoryName":25,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000010","后端与接口",{"categoryNo":27,"categoryName":28,"taxonomyType":29,"taxonomyTypeDesc":30},"01JBSEEDCAT000000000000030","开发工程师","PROFESSION","适用职业",{"categoryNo":32,"categoryName":33,"taxonomyType":29,"taxonomyTypeDesc":30},"01JBSEEDCAT000000000000039","教师与教育",[35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59],"development","api development","moodle","external api","moodle external api development","api","use","web services","custom","for","implementing","course","quiz","database operations","registration","standards","web","coding","services","coding standards","database","validation","error handling","create","plugin","2026-11-10 10:12:30",false,"---\nname: moodle-external-api-development\ndescription: Create custom external web service APIs for Moodle LMS. Use when implementing web services for course management, user tracking, quiz operations, or custom plugin functionality. Covers parameter validation, database operations, error handling, service registration, and Moodle coding standards.\n---\n\n# Moodle External API Development\n\nThis skill guides you through creating custom external web service APIs for Moodle LMS, following Moodle's external API framework and coding standards.\n\n## When to Use This Skill\n\n- Creating custom web services for Moodle plugins\n- Implementing REST\u002FAJAX endpoints for course management\n- Building APIs for quiz operations, user tracking, or reporting\n- Exposing Moodle functionality to external applications\n- Developing mobile app backends using Moodle\n\n## Core Architecture Pattern\n\nMoodle external APIs follow a strict three-method pattern:\n\n1. **`execute_parameters()`** - Defines input parameter structure\n2. **`execute()`** - Contains business logic\n3. **`execute_returns()`** - Defines return structure\n\n## Step-by-Step Implementation\n\n### Step 1: Create the External API Class File\n\n**Location**: `\u002Flocal\u002Fyourplugin\u002Fclasses\u002Fexternal\u002Fyour_api_name.php`\n\n```php\n\u003C?php\nnamespace local_yourplugin\\external;\n\ndefined('MOODLE_INTERNAL') || die();\nrequire_once(\"$CFG->libdir\u002Fexternallib.php\");\n\nuse external_api;\nuse external_function_parameters;\nuse external_single_structure;\nuse external_value;\n\nclass your_api_name extends external_api {\n    \n    \u002F\u002F Three required methods will go here\n    \n}\n```\n\n**Key Points**:\n- Class must extend `external_api`\n- Namespace follows: `local_pluginname\\external` or `mod_modname\\external`\n- Include the security check: `defined('MOODLE_INTERNAL') || die();`\n- Require externallib.php for base classes\n\n### Step 2: Define Input Parameters\n\n```php\npublic static function execute_parameters() {\n    return new external_function_parameters([\n        'userid' => new external_value(PARAM_INT, 'User ID', VALUE_REQUIRED),\n        'courseid' => new external_value(PARAM_INT, 'Course ID', VALUE_REQUIRED),\n        'options' => new external_single_structure([\n            'includedetails' => new external_value(PARAM_BOOL, 'Include details', VALUE_DEFAULT, false),\n            'limit' => new external_value(PARAM_INT, 'Result limit', VALUE_DEFAULT, 10)\n        ], 'Options', VALUE_OPTIONAL)\n    ]);\n}\n```\n\n**Common Parameter Types**:\n- `PARAM_INT` - Integers\n- `PARAM_TEXT` - Plain text (HTML stripped)\n- `PARAM_RAW` - Raw text (no cleaning)\n- `PARAM_BOOL` - Boolean values\n- `PARAM_FLOAT` - Floating point numbers\n- `PARAM_ALPHANUMEXT` - Alphanumeric with extended chars\n\n**Structures**:\n- `external_value` - Single value\n- `external_single_structure` - Object with named fields\n- `external_multiple_structure` - Array of items\n\n**Value Flags**:\n- `VALUE_REQUIRED` - Parameter must be provided\n- `VALUE_OPTIONAL` - Parameter is optional\n- `VALUE_DEFAULT, defaultvalue` - Optional with default\n\n### Step 3: Implement Business Logic\n\n```php\npublic static function execute($userid, $courseid, $options = []) {\n    global $DB, $USER;\n\n    \u002F\u002F 1. Validate parameters\n    $params = self::validate_parameters(self::execute_parameters(), [\n        'userid' => $userid,\n        'courseid' => $courseid,\n        'options' => $options\n    ]);\n\n    \u002F\u002F 2. Check permissions\u002Fcapabilities\n    $context = \\context_course::instance($params['courseid']);\n    self::validate_context($context);\n    require_capability('moodle\u002Fcourse:view', $context);\n\n    \u002F\u002F 3. Verify user access\n    if ($params['userid'] != $USER->id) {\n        require_capability('moodle\u002Fcourse:viewhiddenactivities', $context);\n    }\n\n    \u002F\u002F 4. Database operations\n    $sql = \"SELECT id, name, timecreated\n            FROM {your_table}\n            WHERE userid = :userid\n              AND courseid = :courseid\n            LIMIT :limit\";\n    \n    $records = $DB->get_records_sql($sql, [\n        'userid' => $params['userid'],\n        'courseid' => $params['courseid'],\n        'limit' => $params['options']['limit']\n    ]);\n\n    \u002F\u002F 5. Process and return data\n    $results = [];\n    foreach ($records as $record) {\n        $results[] = [\n            'id' => $record->id,\n            'name' => $record->name,\n            'timestamp' => $record->timecreated\n        ];\n    }\n\n    return [\n        'items' => $results,\n        'count' => count($results)\n    ];\n}\n```\n\n**Critical Steps**:\n1. **Always validate parameters** using `validate_parameters()`\n2. **Check context** using `validate_context()`\n3. **Verify capabilities** using `require_capability()`\n4. **Use parameterized queries** to prevent SQL injection\n5. **Return structured data** matching return definition\n\n### Step 4: Define Return Structure\n\n```php\npublic static function execute_returns() {\n    return new external_single_structure([\n        'items' => new external_multiple_structure(\n            new external_single_structure([\n                'id' => new external_value(PARAM_INT, 'Item ID'),\n                'name' => new external_value(PARAM_TEXT, 'Item name'),\n                'timestamp' => new external_value(PARAM_INT, 'Creation time')\n            ])\n        ),\n        'count' => new external_value(PARAM_INT, 'Total items')\n    ]);\n}\n```\n\n**Return Structure Rules**:\n- Must match exactly what `execute()` returns\n- Use appropriate parameter types\n- Document each field with description\n- Nested structures allowed\n\n### Step 5: Register the Service\n\n**Location**: `\u002Flocal\u002Fyourplugin\u002Fdb\u002Fservices.php`\n\n```php\n\u003C?php\ndefined('MOODLE_INTERNAL') || die();\n\n$functions = [\n    'local_yourplugin_your_api_name' => [\n        'classname'   => 'local_yourplugin\\external\\your_api_name',\n        'methodname'  => 'execute',\n        'classpath'   => 'local\u002Fyourplugin\u002Fclasses\u002Fexternal\u002Fyour_api_name.php',\n        'description' => 'Brief description of what this API does',\n        'type'        => 'read',  \u002F\u002F or 'write'\n        'ajax'        => true,\n        'capabilities'=> 'moodle\u002Fcourse:view', \u002F\u002F comma-separated if multiple\n        'services'    => [MOODLE_OFFICIAL_MOBILE_SERVICE] \u002F\u002F Optional\n    ],\n];\n\n$services = [\n    'Your Plugin Web Service' => [\n        'functions' => [\n            'local_yourplugin_your_api_name'\n        ],\n        'restrictedusers' => 0,\n        'enabled' => 1\n    ]\n];\n```\n\n**Service Registration Keys**:\n- `classname` - Full namespaced class name\n- `methodname` - Always 'execute'\n- `type` - 'read' (SELECT) or 'write' (INSERT\u002FUPDATE\u002FDELETE)\n- `ajax` - Set true for AJAX\u002FREST access\n- `capabilities` - Required Moodle capabilities\n- `services` - Optional service bundles\n\n### Step 6: Implement Error Handling & Logging\n\n```php\nprivate static function log_debug($message) {\n    global $CFG;\n    $logdir = $CFG->dataroot . '\u002Flocal_yourplugin';\n    if (!file_exists($logdir)) {\n        mkdir($logdir, 0777, true);\n    }\n    $debuglog = $logdir . '\u002Fapi_debug.log';\n    $timestamp = date('Y-m-d H:i:s');\n    file_put_contents($debuglog, \"[$timestamp] $message\\n\", FILE_APPEND | LOCK_EX);\n}\n\npublic static function execute($userid, $courseid) {\n    global $DB;\n\n    try {\n        self::log_debug(\"API called: userid=$userid, courseid=$courseid\");\n        \n        \u002F\u002F Validate parameters\n        $params = self::validate_parameters(self::execute_parameters(), [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        \u002F\u002F Your logic here\n        \n        self::log_debug(\"API completed successfully\");\n        return $result;\n\n    } catch (\\invalid_parameter_exception $e) {\n        self::log_debug(\"Parameter validation failed: \" . $e->getMessage());\n        throw $e;\n    } catch (\\moodle_exception $e) {\n        self::log_debug(\"Moodle exception: \" . $e->getMessage());\n        throw $e;\n    } catch (\\Exception $e) {\n        \u002F\u002F Log detailed error info\n        $lastsql = method_exists($DB, 'get_last_sql') ? $DB->get_last_sql() : '[N\u002FA]';\n        self::log_debug(\"Fatal error: \" . $e->getMessage());\n        self::log_debug(\"Last SQL: \" . $lastsql);\n        self::log_debug(\"Stack trace: \" . $e->getTraceAsString());\n        throw $e;\n    }\n}\n```\n\n**Error Handling Best Practices**:\n- Wrap logic in try-catch blocks\n- Log errors with timestamps and context\n- Capture SQL queries on database errors\n- Preserve stack traces for debugging\n- Re-throw exceptions after logging\n\n## Advanced Patterns\n\n### Complex Database Operations\n\n```php\n\u002F\u002F Transaction example\n$transaction = $DB->start_delegated_transaction();\n\ntry {\n    \u002F\u002F Insert record\n    $recordid = $DB->insert_record('your_table', $dataobject);\n    \n    \u002F\u002F Update related records\n    $DB->set_field('another_table', 'status', 1, ['recordid' => $recordid]);\n    \n    \u002F\u002F Commit transaction\n    $transaction->allow_commit();\n} catch (\\Exception $e) {\n    $transaction->rollback($e);\n    throw $e;\n}\n```\n\n### Working with Course Modules\n\n```php\n\u002F\u002F Create course module\n$moduleid = $DB->get_field('modules', 'id', ['name' => 'quiz'], MUST_EXIST);\n\n$cm = new \\stdClass();\n$cm->course = $courseid;\n$cm->module = $moduleid;\n$cm->instance = 0; \u002F\u002F Will be updated after activity creation\n$cm->visible = 1;\n$cm->groupmode = 0;\n$cmid = add_course_module($cm);\n\n\u002F\u002F Create activity instance (e.g., quiz)\n$quiz = new \\stdClass();\n$quiz->course = $courseid;\n$quiz->name = 'My Quiz';\n$quiz->coursemodule = $cmid;\n\u002F\u002F ... other quiz fields ...\n\n$quizid = quiz_add_instance($quiz, null);\n\n\u002F\u002F Update course module with instance ID\n$DB->set_field('course_modules', 'instance', $quizid, ['id' => $cmid]);\ncourse_add_cm_to_section($courseid, $cmid, 0);\n```\n\n### Access Restrictions (Groups\u002FAvailability)\n\n```php\n\u002F\u002F Restrict activity to specific user via group\n$groupname = 'activity_' . $activityid . '_user_' . $userid;\n\n\u002F\u002F Create or get group\nif (!$groupid = $DB->get_field('groups', 'id', ['courseid' => $courseid, 'name' => $groupname])) {\n    $groupdata = (object)[\n        'courseid' => $courseid,\n        'name' => $groupname,\n        'timecreated' => time(),\n        'timemodified' => time()\n    ];\n    $groupid = $DB->insert_record('groups', $groupdata);\n}\n\n\u002F\u002F Add user to group\nif (!$DB->record_exists('groups_members', ['groupid' => $groupid, 'userid' => $userid])) {\n    $DB->insert_record('groups_members', (object)[\n        'groupid' => $groupid,\n        'userid' => $userid,\n        'timeadded' => time()\n    ]);\n}\n\n\u002F\u002F Set availability condition\n$restriction = [\n    'op' => '&',\n    'show' => false,\n    'c' => [\n        [\n            'type' => 'group',\n            'id' => $groupid\n        ]\n    ],\n    'showc' => [false]\n];\n\n$DB->set_field('course_modules', 'availability', json_encode($restriction), ['id' => $cmid]);\n```\n\n### Random Question Selection with Tags\n\n```php\nprivate static function get_random_questions($categoryid, $tagname, $limit) {\n    global $DB;\n    \n    $sql = \"SELECT q.id\n            FROM {question} q\n            INNER JOIN {question_versions} qv ON qv.questionid = q.id\n            INNER JOIN {question_bank_entries} qbe ON qbe.id = qv.questionbankentryid\n            INNER JOIN {question_categories} qc ON qc.id = qbe.questioncategoryid\n            JOIN {tag_instance} ti ON ti.itemid = q.id\n            JOIN {tag} t ON t.id = ti.tagid\n            WHERE LOWER(t.name) = :tagname\n              AND qc.id = :categoryid\n              AND ti.itemtype = 'question'\n              AND q.qtype = 'multichoice'\";\n    \n    $qids = $DB->get_fieldset_sql($sql, [\n        'categoryid' => $categoryid,\n        'tagname' => strtolower($tagname)\n    ]);\n    \n    shuffle($qids);\n    return array_slice($qids, 0, $limit);\n}\n```\n\n## Testing Your API\n\n### 1. Via Moodle Web Services Test Client\n\n1. Enable web services: **Site administration > Advanced features**\n2. Enable REST protocol: **Site administration > Plugins > Web services > Manage protocols**\n3. Create service: **Site administration > Server > Web services > External services**\n4. Test function: **Site administration > Development > Web service test client**\n\n### 2. Via curl\n\n```bash\n# Get token first\ncurl -X POST \"https:\u002F\u002Fyourmoodle.com\u002Flogin\u002Ftoken.php\" \\\n  -d \"username=admin\" \\\n  -d \"password=yourpassword\" \\\n  -d \"service=moodle_mobile_app\"\n\n# Call your API\ncurl -X POST \"https:\u002F\u002Fyourmoodle.com\u002Fwebservice\u002Frest\u002Fserver.php\" \\\n  -d \"wstoken=YOUR_TOKEN\" \\\n  -d \"wsfunction=local_yourplugin_your_api_name\" \\\n  -d \"moodlewsrestformat=json\" \\\n  -d \"userid=2\" \\\n  -d \"courseid=3\"\n```\n\n### 3. Via JavaScript (AJAX)\n\n```javascript\nrequire(['core\u002Fajax'], function(ajax) {\n    var promises = ajax.call([{\n        methodname: 'local_yourplugin_your_api_name',\n        args: {\n            userid: 2,\n            courseid: 3\n        }\n    }]);\n\n    promises[0].done(function(response) {\n        console.log('Success:', response);\n    }).fail(function(error) {\n        console.error('Error:', error);\n    });\n});\n```\n\n## Common Pitfalls & Solutions\n\n### 1. \"Function not found\" Error\n**Solution**: \n- Purge caches: **Site administration > Development > Purge all caches**\n- Verify function name in services.php matches exactly\n- Check namespace and class name are correct\n\n### 2. \"Invalid parameter value detected\"\n**Solution**:\n- Ensure parameter types match between definition and usage\n- Check required vs optional parameters\n- Validate nested structure definitions\n\n### 3. SQL Injection Vulnerabilities\n**Solution**:\n- Always use placeholder parameters (`:paramname`)\n- Never concatenate user input into SQL strings\n- Use Moodle's database methods: `get_record()`, `get_records()`, etc.\n\n### 4. Permission Denied Errors\n**Solution**:\n- Call `self::validate_context($context)` early in execute()\n- Check required capabilities match user's permissions\n- Verify user has role assignments in the context\n\n### 5. Transaction Deadlocks\n**Solution**:\n- Keep transactions short\n- Always commit or rollback in finally blocks\n- Avoid nested transactions\n\n## Debugging Checklist\n\n- [ ] Check Moodle debug mode: **Site administration > Development > Debugging**\n- [ ] Review web services logs: **Site administration > Reports > Logs**\n- [ ] Check custom log files in `$CFG->dataroot\u002Flocal_yourplugin\u002F`\n- [ ] Verify database queries using `$DB->set_debug(true)`\n- [ ] Test with admin user to rule out permission issues\n- [ ] Clear browser cache and Moodle caches\n- [ ] Check PHP error logs on server\n\n## Plugin Structure Checklist\n\n```\nlocal\u002Fyourplugin\u002F\n├── version.php                 # Plugin version and metadata\n├── db\u002F\n│   ├── services.php           # External service definitions\n│   └── access.php             # Capability definitions (optional)\n├── classes\u002F\n│   └── external\u002F\n│       ├── your_api_name.php  # External API implementation\n│       └── another_api.php    # Additional APIs\n├── lang\u002F\n│   └── en\u002F\n│       └── local_yourplugin.php  # Language strings\n└── tests\u002F\n    └── external_test.php      # Unit tests (optional but recommended)\n```\n\n## Examples from Real Implementation\n\n### Simple Read API (Get Quiz Attempts)\n\n```php\n\u003C?php\nnamespace local_userlog\\external;\n\ndefined('MOODLE_INTERNAL') || die();\nrequire_once(\"$CFG->libdir\u002Fexternallib.php\");\n\nuse external_api;\nuse external_function_parameters;\nuse external_single_structure;\nuse external_value;\n\nclass get_quiz_attempts extends external_api {\n    public static function execute_parameters() {\n        return new external_function_parameters([\n            'userid' => new external_value(PARAM_INT, 'User ID'),\n            'courseid' => new external_value(PARAM_INT, 'Course ID')\n        ]);\n    }\n\n    public static function execute($userid, $courseid) {\n        global $DB;\n\n        self::validate_parameters(self::execute_parameters(), [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        $sql = \"SELECT COUNT(*) AS quiz_attempts\n                FROM {quiz_attempts} qa\n                JOIN {quiz} q ON qa.quiz = q.id\n                WHERE qa.userid = :userid AND q.course = :courseid\";\n\n        $attempts = $DB->get_field_sql($sql, [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        return ['quiz_attempts' => (int)$attempts];\n    }\n\n    public static function execute_returns() {\n        return new external_single_structure([\n            'quiz_attempts' => new external_value(PARAM_INT, 'Total number of quiz attempts')\n        ]);\n    }\n}\n```\n\n### Complex Write API (Create Quiz from Categories)\n\nSee attached `create_quiz_from_categories.php` for a comprehensive example including:\n- Multiple database insertions\n- Course module creation\n- Quiz instance configuration\n- Random question selection with tags\n- Group-based access restrictions\n- Extensive error logging\n- Transaction management\n\n## Quick Reference: Common Moodle Tables\n\n| Table | Purpose |\n|-------|---------|\n| `{user}` | User accounts |\n| `{course}` | Courses |\n| `{course_modules}` | Activity instances in courses |\n| `{modules}` | Available activity types (quiz, forum, etc.) |\n| `{quiz}` | Quiz configurations |\n| `{quiz_attempts}` | Quiz attempt records |\n| `{question}` | Question bank |\n| `{question_categories}` | Question categories |\n| `{grade_items}` | Gradebook items |\n| `{grade_grades}` | Student grades |\n| `{groups}` | Course groups |\n| `{groups_members}` | Group memberships |\n| `{logstore_standard_log}` | Activity logs |\n\n## Additional Resources\n\n- [Moodle External API Documentation](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fsubsystems\u002Fexternal\u002Ffunctions)\n- [Moodle Coding Style](https:\u002F\u002Fmoodledev.io\u002Fgeneral\u002Fdevelopment\u002Fpolicies\u002Fcodingstyle)\n- [Moodle Database API](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fcore\u002Fdml)\n- [Web Services API Documentation](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fsubsystems\u002Fexternal)\n\n## Guidelines\n\n- Always validate input parameters using `validate_parameters()`\n- Check user context and capabilities before operations\n- Use parameterized SQL queries (never string concatenation)\n- Implement comprehensive error handling and logging\n- Follow Moodle naming conventions (lowercase, underscores)\n- Document all parameters and return values clearly\n- Test with different user roles and permissions\n- Consider transaction safety for write operations\n- Purge caches after service registration changes\n- Keep API methods focused and single-purpose\n","# Moodle External API Development\n\nThis skill guides you through creating custom external web service APIs for Moodle LMS, following Moodle's external API framework and coding standards.\n\n## When to Use This Skill\n\n- Creating custom web services for Moodle plugins\n- Implementing REST\u002FAJAX endpoints for course management\n- Building APIs for quiz operations, user tracking, or reporting\n- Exposing Moodle functionality to external applications\n- Developing mobile app backends using Moodle\n\n## Core Architecture Pattern\n\nMoodle external APIs follow a strict three-method pattern:\n\n1. **`execute_parameters()`** - Defines input parameter structure\n2. **`execute()`** - Contains business logic\n3. **`execute_returns()`** - Defines return structure\n\n## Step-by-Step Implementation\n\n### Step 1: Create the External API Class File\n\n**Location**: `\u002Flocal\u002Fyourplugin\u002Fclasses\u002Fexternal\u002Fyour_api_name.php`\n\n```php\n\u003C?php\nnamespace local_yourplugin\\external;\n\ndefined('MOODLE_INTERNAL') || die();\nrequire_once(\"$CFG->libdir\u002Fexternallib.php\");\n\nuse external_api;\nuse external_function_parameters;\nuse external_single_structure;\nuse external_value;\n\nclass your_api_name extends external_api {\n    \n    \u002F\u002F Three required methods will go here\n    \n}\n```\n\n**Key Points**:\n- Class must extend `external_api`\n- Namespace follows: `local_pluginname\\external` or `mod_modname\\external`\n- Include the security check: `defined('MOODLE_INTERNAL') || die();`\n- Require externallib.php for base classes\n\n### Step 2: Define Input Parameters\n\n```php\npublic static function execute_parameters() {\n    return new external_function_parameters([\n        'userid' => new external_value(PARAM_INT, 'User ID', VALUE_REQUIRED),\n        'courseid' => new external_value(PARAM_INT, 'Course ID', VALUE_REQUIRED),\n        'options' => new external_single_structure([\n            'includedetails' => new external_value(PARAM_BOOL, 'Include details', VALUE_DEFAULT, false),\n            'limit' => new external_value(PARAM_INT, 'Result limit', VALUE_DEFAULT, 10)\n        ], 'Options', VALUE_OPTIONAL)\n    ]);\n}\n```\n\n**Common Parameter Types**:\n- `PARAM_INT` - Integers\n- `PARAM_TEXT` - Plain text (HTML stripped)\n- `PARAM_RAW` - Raw text (no cleaning)\n- `PARAM_BOOL` - Boolean values\n- `PARAM_FLOAT` - Floating point numbers\n- `PARAM_ALPHANUMEXT` - Alphanumeric with extended chars\n\n**Structures**:\n- `external_value` - Single value\n- `external_single_structure` - Object with named fields\n- `external_multiple_structure` - Array of items\n\n**Value Flags**:\n- `VALUE_REQUIRED` - Parameter must be provided\n- `VALUE_OPTIONAL` - Parameter is optional\n- `VALUE_DEFAULT, defaultvalue` - Optional with default\n\n### Step 3: Implement Business Logic\n\n```php\npublic static function execute($userid, $courseid, $options = []) {\n    global $DB, $USER;\n\n    \u002F\u002F 1. Validate parameters\n    $params = self::validate_parameters(self::execute_parameters(), [\n        'userid' => $userid,\n        'courseid' => $courseid,\n        'options' => $options\n    ]);\n\n    \u002F\u002F 2. Check permissions\u002Fcapabilities\n    $context = \\context_course::instance($params['courseid']);\n    self::validate_context($context);\n    require_capability('moodle\u002Fcourse:view', $context);\n\n    \u002F\u002F 3. Verify user access\n    if ($params['userid'] != $USER->id) {\n        require_capability('moodle\u002Fcourse:viewhiddenactivities', $context);\n    }\n\n    \u002F\u002F 4. Database operations\n    $sql = \"SELECT id, name, timecreated\n            FROM {your_table}\n            WHERE userid = :userid\n              AND courseid = :courseid\n            LIMIT :limit\";\n    \n    $records = $DB->get_records_sql($sql, [\n        'userid' => $params['userid'],\n        'courseid' => $params['courseid'],\n        'limit' => $params['options']['limit']\n    ]);\n\n    \u002F\u002F 5. Process and return data\n    $results = [];\n    foreach ($records as $record) {\n        $results[] = [\n            'id' => $record->id,\n            'name' => $record->name,\n            'timestamp' => $record->timecreated\n        ];\n    }\n\n    return [\n        'items' => $results,\n        'count' => count($results)\n    ];\n}\n```\n\n**Critical Steps**:\n1. **Always validate parameters** using `validate_parameters()`\n2. **Check context** using `validate_context()`\n3. **Verify capabilities** using `require_capability()`\n4. **Use parameterized queries** to prevent SQL injection\n5. **Return structured data** matching return definition\n\n### Step 4: Define Return Structure\n\n```php\npublic static function execute_returns() {\n    return new external_single_structure([\n        'items' => new external_multiple_structure(\n            new external_single_structure([\n                'id' => new external_value(PARAM_INT, 'Item ID'),\n                'name' => new external_value(PARAM_TEXT, 'Item name'),\n                'timestamp' => new external_value(PARAM_INT, 'Creation time')\n            ])\n        ),\n        'count' => new external_value(PARAM_INT, 'Total items')\n    ]);\n}\n```\n\n**Return Structure Rules**:\n- Must match exactly what `execute()` returns\n- Use appropriate parameter types\n- Document each field with description\n- Nested structures allowed\n\n### Step 5: Register the Service\n\n**Location**: `\u002Flocal\u002Fyourplugin\u002Fdb\u002Fservices.php`\n\n```php\n\u003C?php\ndefined('MOODLE_INTERNAL') || die();\n\n$functions = [\n    'local_yourplugin_your_api_name' => [\n        'classname'   => 'local_yourplugin\\external\\your_api_name',\n        'methodname'  => 'execute',\n        'classpath'   => 'local\u002Fyourplugin\u002Fclasses\u002Fexternal\u002Fyour_api_name.php',\n        'description' => 'Brief description of what this API does',\n        'type'        => 'read',  \u002F\u002F or 'write'\n        'ajax'        => true,\n        'capabilities'=> 'moodle\u002Fcourse:view', \u002F\u002F comma-separated if multiple\n        'services'    => [MOODLE_OFFICIAL_MOBILE_SERVICE] \u002F\u002F Optional\n    ],\n];\n\n$services = [\n    'Your Plugin Web Service' => [\n        'functions' => [\n            'local_yourplugin_your_api_name'\n        ],\n        'restrictedusers' => 0,\n        'enabled' => 1\n    ]\n];\n```\n\n**Service Registration Keys**:\n- `classname` - Full namespaced class name\n- `methodname` - Always 'execute'\n- `type` - 'read' (SELECT) or 'write' (INSERT\u002FUPDATE\u002FDELETE)\n- `ajax` - Set true for AJAX\u002FREST access\n- `capabilities` - Required Moodle capabilities\n- `services` - Optional service bundles\n\n### Step 6: Implement Error Handling & Logging\n\n```php\nprivate static function log_debug($message) {\n    global $CFG;\n    $logdir = $CFG->dataroot . '\u002Flocal_yourplugin';\n    if (!file_exists($logdir)) {\n        mkdir($logdir, 0777, true);\n    }\n    $debuglog = $logdir . '\u002Fapi_debug.log';\n    $timestamp = date('Y-m-d H:i:s');\n    file_put_contents($debuglog, \"[$timestamp] $message\\n\", FILE_APPEND | LOCK_EX);\n}\n\npublic static function execute($userid, $courseid) {\n    global $DB;\n\n    try {\n        self::log_debug(\"API called: userid=$userid, courseid=$courseid\");\n        \n        \u002F\u002F Validate parameters\n        $params = self::validate_parameters(self::execute_parameters(), [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        \u002F\u002F Your logic here\n        \n        self::log_debug(\"API completed successfully\");\n        return $result;\n\n    } catch (\\invalid_parameter_exception $e) {\n        self::log_debug(\"Parameter validation failed: \" . $e->getMessage());\n        throw $e;\n    } catch (\\moodle_exception $e) {\n        self::log_debug(\"Moodle exception: \" . $e->getMessage());\n        throw $e;\n    } catch (\\Exception $e) {\n        \u002F\u002F Log detailed error info\n        $lastsql = method_exists($DB, 'get_last_sql') ? $DB->get_last_sql() : '[N\u002FA]';\n        self::log_debug(\"Fatal error: \" . $e->getMessage());\n        self::log_debug(\"Last SQL: \" . $lastsql);\n        self::log_debug(\"Stack trace: \" . $e->getTraceAsString());\n        throw $e;\n    }\n}\n```\n\n**Error Handling Best Practices**:\n- Wrap logic in try-catch blocks\n- Log errors with timestamps and context\n- Capture SQL queries on database errors\n- Preserve stack traces for debugging\n- Re-throw exceptions after logging\n\n## Advanced Patterns\n\n### Complex Database Operations\n\n```php\n\u002F\u002F Transaction example\n$transaction = $DB->start_delegated_transaction();\n\ntry {\n    \u002F\u002F Insert record\n    $recordid = $DB->insert_record('your_table', $dataobject);\n    \n    \u002F\u002F Update related records\n    $DB->set_field('another_table', 'status', 1, ['recordid' => $recordid]);\n    \n    \u002F\u002F Commit transaction\n    $transaction->allow_commit();\n} catch (\\Exception $e) {\n    $transaction->rollback($e);\n    throw $e;\n}\n```\n\n### Working with Course Modules\n\n```php\n\u002F\u002F Create course module\n$moduleid = $DB->get_field('modules', 'id', ['name' => 'quiz'], MUST_EXIST);\n\n$cm = new \\stdClass();\n$cm->course = $courseid;\n$cm->module = $moduleid;\n$cm->instance = 0; \u002F\u002F Will be updated after activity creation\n$cm->visible = 1;\n$cm->groupmode = 0;\n$cmid = add_course_module($cm);\n\n\u002F\u002F Create activity instance (e.g., quiz)\n$quiz = new \\stdClass();\n$quiz->course = $courseid;\n$quiz->name = 'My Quiz';\n$quiz->coursemodule = $cmid;\n\u002F\u002F ... other quiz fields ...\n\n$quizid = quiz_add_instance($quiz, null);\n\n\u002F\u002F Update course module with instance ID\n$DB->set_field('course_modules', 'instance', $quizid, ['id' => $cmid]);\ncourse_add_cm_to_section($courseid, $cmid, 0);\n```\n\n### Access Restrictions (Groups\u002FAvailability)\n\n```php\n\u002F\u002F Restrict activity to specific user via group\n$groupname = 'activity_' . $activityid . '_user_' . $userid;\n\n\u002F\u002F Create or get group\nif (!$groupid = $DB->get_field('groups', 'id', ['courseid' => $courseid, 'name' => $groupname])) {\n    $groupdata = (object)[\n        'courseid' => $courseid,\n        'name' => $groupname,\n        'timecreated' => time(),\n        'timemodified' => time()\n    ];\n    $groupid = $DB->insert_record('groups', $groupdata);\n}\n\n\u002F\u002F Add user to group\nif (!$DB->record_exists('groups_members', ['groupid' => $groupid, 'userid' => $userid])) {\n    $DB->insert_record('groups_members', (object)[\n        'groupid' => $groupid,\n        'userid' => $userid,\n        'timeadded' => time()\n    ]);\n}\n\n\u002F\u002F Set availability condition\n$restriction = [\n    'op' => '&',\n    'show' => false,\n    'c' => [\n        [\n            'type' => 'group',\n            'id' => $groupid\n        ]\n    ],\n    'showc' => [false]\n];\n\n$DB->set_field('course_modules', 'availability', json_encode($restriction), ['id' => $cmid]);\n```\n\n### Random Question Selection with Tags\n\n```php\nprivate static function get_random_questions($categoryid, $tagname, $limit) {\n    global $DB;\n    \n    $sql = \"SELECT q.id\n            FROM {question} q\n            INNER JOIN {question_versions} qv ON qv.questionid = q.id\n            INNER JOIN {question_bank_entries} qbe ON qbe.id = qv.questionbankentryid\n            INNER JOIN {question_categories} qc ON qc.id = qbe.questioncategoryid\n            JOIN {tag_instance} ti ON ti.itemid = q.id\n            JOIN {tag} t ON t.id = ti.tagid\n            WHERE LOWER(t.name) = :tagname\n              AND qc.id = :categoryid\n              AND ti.itemtype = 'question'\n              AND q.qtype = 'multichoice'\";\n    \n    $qids = $DB->get_fieldset_sql($sql, [\n        'categoryid' => $categoryid,\n        'tagname' => strtolower($tagname)\n    ]);\n    \n    shuffle($qids);\n    return array_slice($qids, 0, $limit);\n}\n```\n\n## Testing Your API\n\n### 1. Via Moodle Web Services Test Client\n\n1. Enable web services: **Site administration > Advanced features**\n2. Enable REST protocol: **Site administration > Plugins > Web services > Manage protocols**\n3. Create service: **Site administration > Server > Web services > External services**\n4. Test function: **Site administration > Development > Web service test client**\n\n### 2. Via curl\n\n```bash\n# Get token first\ncurl -X POST \"https:\u002F\u002Fyourmoodle.com\u002Flogin\u002Ftoken.php\" \\\n  -d \"username=admin\" \\\n  -d \"password=yourpassword\" \\\n  -d \"service=moodle_mobile_app\"\n\n# Call your API\ncurl -X POST \"https:\u002F\u002Fyourmoodle.com\u002Fwebservice\u002Frest\u002Fserver.php\" \\\n  -d \"wstoken=YOUR_TOKEN\" \\\n  -d \"wsfunction=local_yourplugin_your_api_name\" \\\n  -d \"moodlewsrestformat=json\" \\\n  -d \"userid=2\" \\\n  -d \"courseid=3\"\n```\n\n### 3. Via JavaScript (AJAX)\n\n```javascript\nrequire(['core\u002Fajax'], function(ajax) {\n    var promises = ajax.call([{\n        methodname: 'local_yourplugin_your_api_name',\n        args: {\n            userid: 2,\n            courseid: 3\n        }\n    }]);\n\n    promises[0].done(function(response) {\n        console.log('Success:', response);\n    }).fail(function(error) {\n        console.error('Error:', error);\n    });\n});\n```\n\n## Common Pitfalls & Solutions\n\n### 1. \"Function not found\" Error\n**Solution**: \n- Purge caches: **Site administration > Development > Purge all caches**\n- Verify function name in services.php matches exactly\n- Check namespace and class name are correct\n\n### 2. \"Invalid parameter value detected\"\n**Solution**:\n- Ensure parameter types match between definition and usage\n- Check required vs optional parameters\n- Validate nested structure definitions\n\n### 3. SQL Injection Vulnerabilities\n**Solution**:\n- Always use placeholder parameters (`:paramname`)\n- Never concatenate user input into SQL strings\n- Use Moodle's database methods: `get_record()`, `get_records()`, etc.\n\n### 4. Permission Denied Errors\n**Solution**:\n- Call `self::validate_context($context)` early in execute()\n- Check required capabilities match user's permissions\n- Verify user has role assignments in the context\n\n### 5. Transaction Deadlocks\n**Solution**:\n- Keep transactions short\n- Always commit or rollback in finally blocks\n- Avoid nested transactions\n\n## Debugging Checklist\n\n- [ ] Check Moodle debug mode: **Site administration > Development > Debugging**\n- [ ] Review web services logs: **Site administration > Reports > Logs**\n- [ ] Check custom log files in `$CFG->dataroot\u002Flocal_yourplugin\u002F`\n- [ ] Verify database queries using `$DB->set_debug(true)`\n- [ ] Test with admin user to rule out permission issues\n- [ ] Clear browser cache and Moodle caches\n- [ ] Check PHP error logs on server\n\n## Plugin Structure Checklist\n\n```\nlocal\u002Fyourplugin\u002F\n├── version.php                 # Plugin version and metadata\n├── db\u002F\n│   ├── services.php           # External service definitions\n│   └── access.php             # Capability definitions (optional)\n├── classes\u002F\n│   └── external\u002F\n│       ├── your_api_name.php  # External API implementation\n│       └── another_api.php    # Additional APIs\n├── lang\u002F\n│   └── en\u002F\n│       └── local_yourplugin.php  # Language strings\n└── tests\u002F\n    └── external_test.php      # Unit tests (optional but recommended)\n```\n\n## Examples from Real Implementation\n\n### Simple Read API (Get Quiz Attempts)\n\n```php\n\u003C?php\nnamespace local_userlog\\external;\n\ndefined('MOODLE_INTERNAL') || die();\nrequire_once(\"$CFG->libdir\u002Fexternallib.php\");\n\nuse external_api;\nuse external_function_parameters;\nuse external_single_structure;\nuse external_value;\n\nclass get_quiz_attempts extends external_api {\n    public static function execute_parameters() {\n        return new external_function_parameters([\n            'userid' => new external_value(PARAM_INT, 'User ID'),\n            'courseid' => new external_value(PARAM_INT, 'Course ID')\n        ]);\n    }\n\n    public static function execute($userid, $courseid) {\n        global $DB;\n\n        self::validate_parameters(self::execute_parameters(), [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        $sql = \"SELECT COUNT(*) AS quiz_attempts\n                FROM {quiz_attempts} qa\n                JOIN {quiz} q ON qa.quiz = q.id\n                WHERE qa.userid = :userid AND q.course = :courseid\";\n\n        $attempts = $DB->get_field_sql($sql, [\n            'userid' => $userid,\n            'courseid' => $courseid\n        ]);\n\n        return ['quiz_attempts' => (int)$attempts];\n    }\n\n    public static function execute_returns() {\n        return new external_single_structure([\n            'quiz_attempts' => new external_value(PARAM_INT, 'Total number of quiz attempts')\n        ]);\n    }\n}\n```\n\n### Complex Write API (Create Quiz from Categories)\n\nSee attached `create_quiz_from_categories.php` for a comprehensive example including:\n- Multiple database insertions\n- Course module creation\n- Quiz instance configuration\n- Random question selection with tags\n- Group-based access restrictions\n- Extensive error logging\n- Transaction management\n\n## Quick Reference: Common Moodle Tables\n\n| Table | Purpose |\n|-------|---------|\n| `{user}` | User accounts |\n| `{course}` | Courses |\n| `{course_modules}` | Activity instances in courses |\n| `{modules}` | Available activity types (quiz, forum, etc.) |\n| `{quiz}` | Quiz configurations |\n| `{quiz_attempts}` | Quiz attempt records |\n| `{question}` | Question bank |\n| `{question_categories}` | Question categories |\n| `{grade_items}` | Gradebook items |\n| `{grade_grades}` | Student grades |\n| `{groups}` | Course groups |\n| `{groups_members}` | Group memberships |\n| `{logstore_standard_log}` | Activity logs |\n\n## Additional Resources\n\n- [Moodle External API Documentation](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fsubsystems\u002Fexternal\u002Ffunctions)\n- [Moodle Coding Style](https:\u002F\u002Fmoodledev.io\u002Fgeneral\u002Fdevelopment\u002Fpolicies\u002Fcodingstyle)\n- [Moodle Database API](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fcore\u002Fdml)\n- [Web Services API Documentation](https:\u002F\u002Fmoodledev.io\u002Fdocs\u002F5.2\u002Fapis\u002Fsubsystems\u002Fexternal)\n\n## Guidelines\n\n- Always validate input parameters using `validate_parameters()`\n- Check user context and capabilities before operations\n- Use parameterized SQL queries (never string concatenation)\n- Implement comprehensive error handling and logging\n- Follow Moodle naming conventions (lowercase, underscores)\n- Document all parameters and return values clearly\n- Test with different user roles and permissions\n- Consider transaction safety for write operations\n- Purge caches after service registration changes\n- Keep API methods focused and single-purpose\n",{"name":5,"description":7},"main","2b749c82b5d11fac39d9a6e021ce3f5b8a541bd1","cli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fmoodle-external-api-development",3931,"https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates","https:\u002F\u002Faitmpl.com","https:\u002F\u002Fgithub.com\u002Fdavila7","https:\u002F\u002Fdanielavila.me","Building AI dev tools with LLMs","2026-11-14 06:14:46",{"source":8,"skillName":5,"commands":76,"prompt":86,"zipAvailable":87},[77,80,83],{"tool":78,"command":79},"npx","npx skills add davila7\u002Fclaude-code-templates --skill moodle-external-api-development",{"tool":81,"command":82},"bunx","bunx skills add davila7\u002Fclaude-code-templates --skill moodle-external-api-development",{"tool":84,"command":85},"pnpm","pnpm dlx skills add davila7\u002Fclaude-code-templates --skill moodle-external-api-development","安装技能，技能地址：https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fmoodle-external-api-development\u002FSKILL.md",true,[],[90,118,145,173,207,229],{"skillNo":91,"name":92,"nameZh":6,"description":93,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":94,"categories":95,"keywords":99,"publishedAt":60},"01M70NHBTQ8BV0A2SCAZXEPHCX","wealthville-pool-scoring","Score DeFi liquidity pools before providing liquidity. Returns a 0-100 pool score and an Enter\u002FHold\u002FExit\u002FReduce\u002FAvoid verdict with calibrated confidence for ~68,800 Solana pools and 575 EVM pools, plus a public miss-inclusive track record. Use when asked whether a pool is worth LPing into, which pools look best right now, or how accurate the scores have actually been.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fweb-data\u002Fwealthville-pool-scoring\u002FSKILL.md",[96],{"categoryNo":97,"categoryName":98,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000023","Skill与智能体开发",[100,101,102,103,104,44,105,106,41,107,108,109,110,111,112,113,114,115,116,117],"scoring","pool","wealthville pool scoring","liquidity","which","exit","now","when","reduce","with","record","track","verdict","evm","solana","how","public","look",{"skillNo":119,"name":120,"nameZh":6,"description":121,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":122,"categories":123,"keywords":125,"publishedAt":60},"01M70MB6VR8ERJ4EM8D5KHBMEV","technical-debt-auditor","Scans a codebase and produces a quantified technical debt report with a prioritized remediation plan. Analyzes dead code, TODO\u002FFIXME\u002FHACK markers, dependency staleness, complexity hotspots, code duplication signals, test coverage gaps, unused exports, and outdated patterns. Use this skill when the user asks to audit their codebase for tech debt, wants a health check of their code quality, says things like \"where should I focus refactoring\", \"find code smells\", \"audit my codebase\", \"what technical debt do we have\", \"prioritize cleanup work\", or asks about code quality metrics. Also trigger when the user mentions \"code rot\", \"legacy cleanup\", \"refactoring priorities\", or wants to understand the overall health of a project before a major effort. Trigger even if the user doesn't say \"technical debt\" explicitly — any request to systematically assess code quality and identify improvement priorities belongs here.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Ftechnical-debt-auditor\u002FSKILL.md",[124],{"categoryNo":97,"categoryName":98,"taxonomyType":21,"taxonomyTypeDesc":22},[126,127,128,129,130,131,132,133,134,135,136,107,137,138,139,140,141,142,143,144],"technical debt","debt","technical","technical debt auditor","auditor","coverage","complexity","markers","project","cleanup","unused","code","todo","work","plan","focus","signals","audit","dependency",{"skillNo":146,"name":147,"nameZh":6,"description":148,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":149,"categories":150,"keywords":156,"publishedAt":60},"01M70KPYH9QNHCNME5GJQGE22K","readonly-sql-guard","Make an agent's database access provably read-only. Use when an agent runs caller-supplied SQL against a production\u002FERP\u002Fanalytics database (a \"query\" MCP tool, text-to-SQL, an admin console), or when reviewing DB-access code for write\u002FDDL\u002Fside-effect\u002Ftransaction-escape risks. Checks what a statement CALLS, not just its shape.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdatabase\u002Freadonly-sql-guard\u002FSKILL.md",[151,152,153],{"categoryNo":24,"categoryName":25,"taxonomyType":21,"taxonomyTypeDesc":22},{"categoryNo":97,"categoryName":98,"taxonomyType":21,"taxonomyTypeDesc":22},{"categoryNo":154,"categoryName":155,"taxonomyType":29,"taxonomyTypeDesc":30},"01JBSEEDCAT000000000000033","数据分析师",[157,158,159,160,161,162,163,44,164,165,166,167,168,169,170,41,171,55,107,172],"readonly","guard","sql guard","sql","readonly sql guard","erp","effect","read-only","db","just","tool","calls","only","MCP","access","query",{"skillNo":174,"name":175,"nameZh":6,"description":176,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":177,"licenseFileUrl":178,"sourceHtmlUrl":179,"categories":180,"keywords":184,"publishedAt":60},"01M6AFY6F7CC2BBZP1QD6VTNVC","web-artifacts-builder","Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn\u002Fui). Use for complex artifacts requiring state management, routing, or shadcn\u002Fui components - not for simple single-file HTML\u002FJSX artifacts.","Apache-2.0","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Futilities\u002Fweb-artifacts-builder\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Futilities\u002Fweb-artifacts-builder\u002FSKILL.md",[181],{"categoryNo":182,"categoryName":183,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000009","前端开发",[185,51,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,44,206],"artifacts builder","web artifacts builder","artifacts","builder","state","routing","state management","component","css","frontend","ui","Tools","file","components","shadcn","react","Tailwind","suite","jsx","html","single-file","ui components",{"skillNo":208,"name":209,"nameZh":6,"description":210,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":177,"licenseFileUrl":211,"sourceHtmlUrl":212,"categories":213,"keywords":216,"publishedAt":60},"01M6AFWF33SFV9Z3SF4PEEE4BF","webapp-testing","Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fsecurity\u002Fwebapp-testing\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fsecurity\u002Fwebapp-testing\u002FSKILL.md",[214,215],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},{"categoryNo":182,"categoryName":183,"taxonomyType":21,"taxonomyTypeDesc":22},[217,218,219,220,221,51,222,194,195,223,224,225,226,44,227,109,228],"webapp testing","testing","webapp","browser","playwright","applications","debugging","toolkit","logs","screenshots","local","behavior",{"skillNo":230,"name":231,"nameZh":6,"description":232,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":177,"licenseFileUrl":233,"sourceHtmlUrl":234,"categories":235,"keywords":243,"publishedAt":60},"01M6AF67Q67JJJ5V51JR2P52KA","discernment-nudge","After you give a substantive answer or draft that the user may act on — advice or recommendations, drafted artifacts such as goals, plans, pitches, proposals, or emails, estimates or projections, analysis or interpretation of data, factual claims they may rely on, or a multi-step argument — invoke this skill BEFORE finalizing your reply and then, if it applies, append 2-3 short follow-up questions, each tied to something specific in what you just produced, that help the user check key facts, probe the reasoning or assumptions, and notice missing context. Do this at most once per conversation. Skip it when the user asked a trivial how-to or simple lookup, wants a purely educational explanation, asked you only to format, convert, or assemble a file from content they provided, is writing code they will run, is doing creative writing or casual chat, or already asked you to double-check, cite, or review — the skill file explains these boundaries and the exact output format.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fproductivity\u002Fdiscernment-nudge\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fproductivity\u002Fdiscernment-nudge\u002FSKILL.md",[236,239,240],{"categoryNo":237,"categoryName":238,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000018","写作与文案",{"categoryNo":97,"categoryName":98,"taxonomyType":21,"taxonomyTypeDesc":22},{"categoryNo":241,"categoryName":242,"taxonomyType":29,"taxonomyTypeDesc":30},"01JBSEEDCAT000000000000036","内容创作者",[244,245,246,247,248,249,250,251,187,252,197,137,253,254,255,256,257,169,258,107,259,260,261,262,263,115,264],"discernment nudge","nudge","interpretation","help","run","reasoning","data","writing","lookup","content","review","conversation","short","up","invoke","you","analysis","claims","argument","assemble","recommendations"]