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anthropic.php
1472 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Engines_Anthropic extends Meow_MWAI_Engines_ChatML { |
| 4 | // Streaming |
| 5 | protected $streamInTokens = null; |
| 6 | protected $streamOutTokens = null; |
| 7 | protected $streamBlocks; |
| 8 | protected $streamIsThinking = false; |
| 9 | protected $mcpServerNames = []; |
| 10 | protected $mcpTools = []; // Track MCP tools by ID |
| 11 | protected $mcpToolCount = 0; |
| 12 | protected $textStarted = false; // Track if text streaming has started |
| 13 | protected $requestSentEmitted = false; // Track if request sent event was emitted |
| 14 | |
| 15 | public function __construct( $core, $env ) { |
| 16 | parent::__construct( $core, $env ); |
| 17 | } |
| 18 | |
| 19 | /** |
| 20 | * Prepare query by uploading files to Anthropic Files API. |
| 21 | * |
| 22 | * This method is called BEFORE streaming hooks are attached and BEFORE build_body(). |
| 23 | * It uploads PDF files to Anthropic's Files API and converts them from 'refId' type |
| 24 | * to 'provider_file_id' type, which build_body() will then use to construct the API request. |
| 25 | * |
| 26 | * Flow: |
| 27 | * 1. prepare_query() uploads files to Anthropic Files API → gets file_id (e.g., file_abc123) |
| 28 | * 2. Replaces DroppedFile from type 'refId' to type 'provider_file_id' |
| 29 | * 3. build_body() reads provider_file_id and includes it in message content |
| 30 | * |
| 31 | * @param Meow_MWAI_Query_Base $query The query with potential file attachments |
| 32 | */ |
| 33 | protected function prepare_query( $query ) { |
| 34 | // Get all attachments using the unified method |
| 35 | $attachments = method_exists( $query, 'getAttachments' ) ? $query->getAttachments() : []; |
| 36 | |
| 37 | if ( empty( $attachments ) ) { |
| 38 | return; |
| 39 | } |
| 40 | |
| 41 | // Check if code_interpreter is enabled |
| 42 | $hasCodeInterpreter = !empty( $query->tools ) && is_array( $query->tools ) && in_array( 'code_interpreter', $query->tools ); |
| 43 | |
| 44 | // MIME types supported by Code Execution tool (container_upload) |
| 45 | $codeExecutionMimes = [ |
| 46 | 'text/csv', |
| 47 | 'application/vnd.ms-excel', |
| 48 | 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', |
| 49 | 'application/msword', |
| 50 | 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', |
| 51 | 'application/json', |
| 52 | 'application/xml', |
| 53 | 'text/xml', |
| 54 | 'text/plain', |
| 55 | 'text/markdown', |
| 56 | ]; |
| 57 | |
| 58 | // Process each attachment - upload files to Anthropic Files API |
| 59 | foreach ( $attachments as $index => $file ) { |
| 60 | $mimeType = $file->get_mimeType() ?? ''; |
| 61 | $isPDF = strpos( $mimeType, 'application/pdf' ) === 0; |
| 62 | $isImage = $file->is_image(); |
| 63 | $isCodeExecutionFile = $hasCodeInterpreter && in_array( $mimeType, $codeExecutionMimes ); |
| 64 | |
| 65 | // Skip files already uploaded (type = provider_file_id) |
| 66 | if ( $file->get_type() === 'provider_file_id' ) { |
| 67 | continue; |
| 68 | } |
| 69 | |
| 70 | // Upload PDFs to Files API (always) |
| 71 | // Upload other documents to Files API only if code_interpreter is enabled |
| 72 | if ( $isPDF || $isCodeExecutionFile ) { |
| 73 | try { |
| 74 | // Get file data from WordPress uploads directory |
| 75 | $refId = $file->get_refId(); |
| 76 | $data = $this->core->files->get_data( $refId ); |
| 77 | $filename = $file->get_filename(); |
| 78 | |
| 79 | // Upload to Anthropic Files API |
| 80 | $uploadedFile = $this->upload_file( $filename, $data, $mimeType ); |
| 81 | $fileId = $uploadedFile['id'] ?? null; |
| 82 | |
| 83 | if ( $fileId ) { |
| 84 | // Store provider file_id in metadata for cleanup later |
| 85 | $localFileId = $this->core->files->get_id_from_refId( $refId ); |
| 86 | if ( $localFileId ) { |
| 87 | $this->core->files->add_metadata( $localFileId, 'file_id', $fileId ); |
| 88 | $this->core->files->add_metadata( $localFileId, 'provider', 'anthropic' ); |
| 89 | } |
| 90 | |
| 91 | // Replace the file object in attachedFiles array with provider_file_id type |
| 92 | if ( !empty( $query->attachedFiles ) && isset( $query->attachedFiles[$index] ) ) { |
| 93 | $query->attachedFiles[$index] = Meow_MWAI_Query_DroppedFile::from_provider_file_id( |
| 94 | $fileId, |
| 95 | 'analysis', |
| 96 | $file->get_mimeType() |
| 97 | ); |
| 98 | } |
| 99 | // Also update legacy attachedFile if this is the first file |
| 100 | if ( $index === 0 && !empty( $query->attachedFile ) ) { |
| 101 | $query->attachedFile = Meow_MWAI_Query_DroppedFile::from_provider_file_id( |
| 102 | $fileId, |
| 103 | 'analysis', |
| 104 | $file->get_mimeType() |
| 105 | ); |
| 106 | } |
| 107 | |
| 108 | if ( $isCodeExecutionFile ) { |
| 109 | Meow_MWAI_Logging::log( "Anthropic: Uploaded file for code execution: {$filename} ({$mimeType}) -> {$fileId}" ); |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | catch ( Exception $e ) { |
| 114 | error_log( '[AI Engine] Failed to upload file to Anthropic Files API: ' . $e->getMessage() ); |
| 115 | // Keep the original file - build_messages() will fall back to base64 for PDFs |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | protected function isMCPTool( $toolName ) { |
| 122 | // Get all MCP tools from the filter |
| 123 | $mcpTools = apply_filters( 'mwai_mcp_tools', [] ); |
| 124 | |
| 125 | // Log available MCP tools for debugging |
| 126 | if ( empty( $mcpTools ) ) { |
| 127 | Meow_MWAI_Logging::log( 'Anthropic: No MCP tools available from filter' ); |
| 128 | } |
| 129 | |
| 130 | foreach ( $mcpTools as $tool ) { |
| 131 | if ( isset( $tool['name'] ) && $tool['name'] === $toolName ) { |
| 132 | Meow_MWAI_Logging::log( "Anthropic: Found MCP tool match: {$toolName}" ); |
| 133 | return true; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | // If we have MCP servers but tool not found, it might be an issue |
| 138 | if ( !empty( $this->mcpServerNames ) && !empty( $toolName ) ) { |
| 139 | Meow_MWAI_Logging::log( "Anthropic: Tool '{$toolName}' not found in MCP tools list" ); |
| 140 | } |
| 141 | |
| 142 | return false; |
| 143 | } |
| 144 | |
| 145 | public function reset_stream() { |
| 146 | $this->streamContent = null; |
| 147 | $this->streamBuffer = null; |
| 148 | $this->streamFunctionCall = null; |
| 149 | $this->streamToolCalls = []; |
| 150 | $this->streamLastMessage = null; |
| 151 | $this->streamInTokens = null; |
| 152 | $this->streamOutTokens = null; |
| 153 | $this->streamIsThinking = false; |
| 154 | $this->mcpTools = []; // Reset MCP tools tracking |
| 155 | $this->textStarted = false; // Reset text started flag |
| 156 | $this->requestSentEmitted = false; // Reset request sent flag |
| 157 | $this->emittedFunctionResults = []; // Reset function result tracking |
| 158 | |
| 159 | $this->streamBlocks = [ |
| 160 | 'role' => 'assistant', |
| 161 | 'content' => [] |
| 162 | ]; |
| 163 | |
| 164 | $this->inModel = null; |
| 165 | $this->inId = null; |
| 166 | } |
| 167 | |
| 168 | protected function set_environment() { |
| 169 | $env = $this->env; |
| 170 | $this->apiKey = $env['apikey']; |
| 171 | } |
| 172 | |
| 173 | protected function build_url( $query, $endpoint = null ) { |
| 174 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 175 | if ( $query instanceof Meow_MWAI_Query_Text || $query instanceof Meow_MWAI_Query_Feedback ) { |
| 176 | $url = trailingslashit( $endpoint ) . 'messages'; |
| 177 | } |
| 178 | else { |
| 179 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 180 | } |
| 181 | return $url; |
| 182 | } |
| 183 | |
| 184 | protected function build_headers( $query ) { |
| 185 | parent::build_headers( $query ); |
| 186 | $headers = [ |
| 187 | 'Content-Type' => 'application/json', |
| 188 | 'x-api-key' => $this->apiKey, |
| 189 | 'anthropic-version' => '2023-06-01', |
| 190 | 'anthropic-beta' => 'prompt-caching-2024-07-31, tools-2024-04-04, pdfs-2024-09-25, mcp-client-2025-04-04, files-api-2025-04-14, code-execution-2025-08-25', |
| 191 | 'User-Agent' => 'AI Engine', |
| 192 | ]; |
| 193 | return $headers; |
| 194 | } |
| 195 | |
| 196 | public function final_checks( Meow_MWAI_Query_Base $query ) { |
| 197 | // We skip this completely. |
| 198 | // maxMessages is handed in build_messages(). |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Build messages array for Anthropic API request. |
| 203 | * |
| 204 | * This method constructs the 'messages' array that will be sent to Anthropic's API. |
| 205 | * It processes both conversation history and file attachments. |
| 206 | * |
| 207 | * CRITICAL: This method handles BOTH single file (attachedFile) and multi-file (attachedFiles). |
| 208 | * The attachedFiles array is the PRIMARY path for multi-file uploads. |
| 209 | * |
| 210 | * @param Meow_MWAI_Query_Text $query The query to build messages from |
| 211 | * @return array Messages formatted for Anthropic API |
| 212 | */ |
| 213 | protected function build_messages( $query ) { |
| 214 | $messages = []; |
| 215 | |
| 216 | // Add conversation history (previous messages) |
| 217 | foreach ( $query->messages as $message ) { |
| 218 | $messages[] = $message; |
| 219 | } |
| 220 | |
| 221 | // Limit message history if maxMessages is set |
| 222 | if ( !empty( $query->maxMessages ) ) { |
| 223 | $messages = array_slice( $messages, -$query->maxMessages ); |
| 224 | } |
| 225 | |
| 226 | // Anthropic requires first message to have 'user' role |
| 227 | if ( !empty( $messages ) && $messages[0]['role'] !== 'user' ) { |
| 228 | array_shift( $messages ); |
| 229 | } |
| 230 | |
| 231 | // ===================================================================== |
| 232 | // FILE UPLOAD: Process all attachments (unified approach) |
| 233 | // ===================================================================== |
| 234 | // Uses getAttachments() which returns both attachedFiles and legacy attachedFile |
| 235 | $attachments = method_exists( $query, 'getAttachments' ) ? $query->getAttachments() : []; |
| 236 | if ( !empty( $attachments ) ) { |
| 237 | $message = $query->get_message(); |
| 238 | if ( empty( $message ) ) { |
| 239 | $message = 'I uploaded files. Do not consider this message as part of the conversation.'; |
| 240 | } |
| 241 | |
| 242 | // Build content array: [text, document, document, ...] or [text, image, image, ...] |
| 243 | $content = [ |
| 244 | [ |
| 245 | 'type' => 'text', |
| 246 | 'text' => $message |
| 247 | ] |
| 248 | ]; |
| 249 | |
| 250 | // MIME types that require Code Execution tool (container_upload) |
| 251 | $codeExecutionMimes = [ |
| 252 | 'text/csv', |
| 253 | 'application/vnd.ms-excel', |
| 254 | 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', |
| 255 | 'application/msword', |
| 256 | 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', |
| 257 | 'application/json', |
| 258 | 'application/xml', |
| 259 | 'text/xml', |
| 260 | 'text/plain', |
| 261 | 'text/markdown', |
| 262 | ]; |
| 263 | |
| 264 | // Process each file and add to content array |
| 265 | foreach ( $attachments as $file ) { |
| 266 | $mime = $file->get_mimeType(); |
| 267 | $isPDF = $mime === 'application/pdf'; |
| 268 | $isIMG = !$isPDF && $file->is_image(); |
| 269 | $isProviderFile = $file->get_type() === 'provider_file_id'; |
| 270 | $isCodeExecutionFile = in_array( $mime, $codeExecutionMimes, true ); |
| 271 | |
| 272 | // ===== CODE EXECUTION FILES (DOCX, XLSX, CSV, etc.) ===== |
| 273 | // These are uploaded via Files API and used with container_upload block |
| 274 | if ( $isCodeExecutionFile && $isProviderFile ) { |
| 275 | $fileId = $file->get_refId(); |
| 276 | $content[] = [ |
| 277 | 'type' => 'container_upload', |
| 278 | 'file_id' => $fileId |
| 279 | ]; |
| 280 | continue; |
| 281 | } |
| 282 | |
| 283 | // ===== PDF FILES ===== |
| 284 | if ( $isPDF ) { |
| 285 | $documentSource = null; |
| 286 | if ( $isProviderFile ) { |
| 287 | // File was uploaded in prepare_query() - use file_id reference |
| 288 | // This is the EXPECTED path after prepare_query() runs |
| 289 | $fileId = $file->get_refId(); |
| 290 | $documentSource = [ |
| 291 | 'type' => 'file', |
| 292 | 'file_id' => $fileId // e.g., file_011CTkNhtS6cU3CKcvTPCfvw |
| 293 | ]; |
| 294 | } |
| 295 | else { |
| 296 | // Fallback: File not uploaded yet (shouldn't happen if prepare_query ran) |
| 297 | // This handles edge cases where prepare_query was skipped |
| 298 | try { |
| 299 | $refId = $file->get_refId(); |
| 300 | $data = $this->core->files->get_data( $refId ); |
| 301 | $filename = $file->get_filename(); |
| 302 | $uploadedFile = $this->upload_file( $filename, $data, $mime ); |
| 303 | $fileId = $uploadedFile['id'] ?? null; |
| 304 | |
| 305 | if ( $fileId ) { |
| 306 | // Store provider file_id in metadata for cleanup later |
| 307 | $localFileId = $this->core->files->get_id_from_refId( $refId ); |
| 308 | if ( $localFileId ) { |
| 309 | $this->core->files->add_metadata( $localFileId, 'file_id', $fileId ); |
| 310 | $this->core->files->add_metadata( $localFileId, 'provider', 'anthropic' ); |
| 311 | } |
| 312 | |
| 313 | $documentSource = [ |
| 314 | 'type' => 'file', |
| 315 | 'file_id' => $fileId |
| 316 | ]; |
| 317 | } |
| 318 | else { |
| 319 | throw new Exception( 'Upload failed - no file_id returned' ); |
| 320 | } |
| 321 | } |
| 322 | catch ( Exception $e ) { |
| 323 | error_log( '[AI Engine] Failed to upload PDF to Anthropic Files API: ' . $e->getMessage() . ', falling back to base64' ); |
| 324 | // Last resort: base64 encoding (less efficient) |
| 325 | $data = $file->get_base64(); |
| 326 | $documentSource = [ |
| 327 | 'type' => 'base64', |
| 328 | 'media_type' => 'application/pdf', |
| 329 | 'data' => $data |
| 330 | ]; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | // Add document to content array |
| 335 | $content[] = [ |
| 336 | 'type' => 'document', |
| 337 | 'source' => $documentSource |
| 338 | ]; |
| 339 | } |
| 340 | // ===== IMAGE FILES ===== |
| 341 | else if ( $isIMG ) { |
| 342 | $imageSource = null; |
| 343 | if ( $isProviderFile ) { |
| 344 | // Use file_id reference (if uploaded to Files API) |
| 345 | $fileId = $file->get_refId(); |
| 346 | $imageSource = [ |
| 347 | 'type' => 'file', |
| 348 | 'file_id' => $fileId |
| 349 | ]; |
| 350 | } |
| 351 | else { |
| 352 | // Use base64 encoding (standard for images) |
| 353 | $data = $file->get_base64(); |
| 354 | $imageSource = [ |
| 355 | 'type' => 'base64', |
| 356 | 'media_type' => $mime, |
| 357 | 'data' => $data |
| 358 | ]; |
| 359 | } |
| 360 | |
| 361 | // Add image to content array |
| 362 | $content[] = [ |
| 363 | 'type' => 'image', |
| 364 | 'source' => $imageSource |
| 365 | ]; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | // Add the complete message with all files to messages array |
| 370 | $messages[] = [ |
| 371 | 'role' => 'user', |
| 372 | 'content' => $content // [text, document, document] or [text, image, image] |
| 373 | ]; |
| 374 | } |
| 375 | else { |
| 376 | $messages[] = [ 'role' => 'user', 'content' => $query->get_message() ]; |
| 377 | } |
| 378 | |
| 379 | return $messages; |
| 380 | } |
| 381 | |
| 382 | // Define a function to recursively replace empty arrays with empty stdClass objects |
| 383 | // To avoid errors with OpenAI's API |
| 384 | // Some Anthropic models (Opus 4.7+) deprecated the `temperature` parameter |
| 385 | // and reject requests that include it. Models opt out via the 'no-temperature' tag. |
| 386 | protected function model_supports_temperature( $model ) { |
| 387 | if ( empty( $model ) ) { |
| 388 | return true; |
| 389 | } |
| 390 | $info = $this->retrieve_model_info( $model ); |
| 391 | return empty( $info['tags'] ) || !in_array( 'no-temperature', $info['tags'] ); |
| 392 | } |
| 393 | |
| 394 | private function replaceEmptyArrayWithObject( $item ) { |
| 395 | if ( is_array( $item ) ) { |
| 396 | if ( empty( $item ) ) { |
| 397 | return new stdClass(); // Replace empty array with empty object |
| 398 | } |
| 399 | foreach ( $item as $key => $value ) { |
| 400 | $item[$key] = $this->replaceEmptyArrayWithObject( $value ); // Recurse |
| 401 | } |
| 402 | } |
| 403 | return $item; |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Anthropic's server-side web search. Claude runs the searches itself and returns |
| 408 | * cited results, so this only has to declare the tool alongside any client functions. |
| 409 | * |
| 410 | * Pinned to web_search_20250305 on purpose: from web_search_20260209 the tool defaults |
| 411 | * to running through code execution (allowed_callers), which 400s on models without |
| 412 | * programmatic tool calling and is unavailable on some clouds. The basic version works |
| 413 | * everywhere, which matters for a plugin that cannot know the user's model or host. |
| 414 | * https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool |
| 415 | */ |
| 416 | private function maybe_add_web_search( &$body, $query ) { |
| 417 | if ( empty( $query->tools ) || !is_array( $query->tools ) ) { |
| 418 | return; |
| 419 | } |
| 420 | if ( !in_array( 'web_search', $query->tools, true ) ) { |
| 421 | return; |
| 422 | } |
| 423 | if ( !isset( $body['tools'] ) ) { |
| 424 | $body['tools'] = []; |
| 425 | } |
| 426 | $body['tools'][] = [ |
| 427 | 'type' => 'web_search_20250305', |
| 428 | 'name' => 'web_search', |
| 429 | 'max_uses' => 5, |
| 430 | ]; |
| 431 | } |
| 432 | |
| 433 | protected function build_body( $query, $streamCallback = null, $extra = null ) { |
| 434 | if ( $query instanceof Meow_MWAI_Query_Feedback ) { |
| 435 | $body = [ |
| 436 | 'model' => $query->model, |
| 437 | // Anthropic requires a valid integer; fall back like the main path does, |
| 438 | // otherwise a function-calling loop without an explicit maxTokens 400s here. |
| 439 | 'max_tokens' => !empty( $query->maxTokens ) ? $query->maxTokens : 4096, |
| 440 | 'stream' => !is_null( $streamCallback ), |
| 441 | 'messages' => [] |
| 442 | ]; |
| 443 | // Null means "not set"; 0 is a valid temperature and must still be sent. |
| 444 | if ( isset( $query->temperature ) && $this->model_supports_temperature( $query->model ) ) { |
| 445 | $body['temperature'] = $query->temperature; |
| 446 | } |
| 447 | |
| 448 | if ( !empty( $query->instructions ) ) { |
| 449 | $body['system'] = [ |
| 450 | [ |
| 451 | 'type' => 'text', |
| 452 | 'text' => $query->instructions, |
| 453 | 'cache_control' => [ 'type' => 'ephemeral' ] |
| 454 | ] |
| 455 | ]; |
| 456 | } |
| 457 | |
| 458 | // Build the messages. Include the full prior conversation history, otherwise |
| 459 | // Claude loses all earlier context on any turn that triggers a function call. |
| 460 | // $query->messages holds ONLY the prior history: the current user message |
| 461 | // travels separately ($query->message), and the assistant's tool_call |
| 462 | // message is replayed by the blocks loop below. Never pop a trailing |
| 463 | // assistant entry here: it is genuine history (its removal made Claude |
| 464 | // re-answer the PREVIOUS question with the previous tool parameters). |
| 465 | $history = is_array( $query->messages ) ? $query->messages : []; |
| 466 | // Anthropic requires the first message to have the 'user' role. |
| 467 | if ( !empty( $history ) && ( $history[0]['role'] ?? '' ) !== 'user' ) { |
| 468 | array_shift( $history ); |
| 469 | } |
| 470 | if ( empty( $history ) ) { |
| 471 | $body['messages'][] = [ 'role' => 'user', 'content' => $query->message ]; |
| 472 | } |
| 473 | else { |
| 474 | foreach ( $history as $historyMessage ) { |
| 475 | $body['messages'][] = $historyMessage; |
| 476 | } |
| 477 | // The user message that triggered this turn is NOT part of the stored |
| 478 | // history (it travels separately as $query->message). Without it, |
| 479 | // Claude reads the PREVIOUS question as the current one and "corrects" |
| 480 | // the tool call with the previous parameters (e.g. re-searching the |
| 481 | // old keyword after a correct new-keyword search). |
| 482 | $lastHistory = end( $history ); |
| 483 | $lastIsSameUserMessage = ( $lastHistory['role'] ?? '' ) === 'user' && |
| 484 | is_string( $lastHistory['content'] ?? null ) && |
| 485 | $lastHistory['content'] === $query->message; |
| 486 | if ( !empty( $query->message ) && !$lastIsSameUserMessage ) { |
| 487 | $body['messages'][] = [ 'role' => 'user', 'content' => $query->message ]; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | if ( !empty( $query->blocks ) ) { |
| 492 | foreach ( $query->blocks as $feedback_block ) { |
| 493 | $contentBlock = $feedback_block['rawMessage']['content']; |
| 494 | |
| 495 | // Server-managed tool blocks (MCP, web search, etc.) are handled internally by |
| 496 | // Anthropic. When the response also contains regular tool_use (stop_reason: tool_use), |
| 497 | // the server-managed tools may not have completed. We must strip these blocks from |
| 498 | // the replayed assistant message since the API rejects them without matching result |
| 499 | // blocks (which only the server can provide). |
| 500 | if ( is_array( $contentBlock ) ) { |
| 501 | $serverManagedTypes = [ |
| 502 | 'mcp_tool_use', 'mcp_tool_result', |
| 503 | 'server_tool_use', 'web_search_tool_result', |
| 504 | // Code execution (code_execution_20250825) runs entirely on |
| 505 | // Anthropic's side, so the `_tool_use` blocks must be stripped |
| 506 | // when we replay the assistant message — only the server can |
| 507 | // produce the matching `_tool_result` blocks. |
| 508 | 'code_execution_tool_use', 'code_execution_tool_result', |
| 509 | 'bash_code_execution_tool_use', 'bash_code_execution_tool_result', |
| 510 | 'text_editor_code_execution_tool_use', 'text_editor_code_execution_tool_result', |
| 511 | ]; |
| 512 | // Block types that are server-produced RESULTS (we keep them out |
| 513 | // of the "stripped tools" warning list because they're not a |
| 514 | // dev-side limitation — they're just paired results). |
| 515 | $serverResultTypes = [ |
| 516 | 'mcp_tool_result', 'web_search_tool_result', |
| 517 | 'code_execution_tool_result', |
| 518 | 'bash_code_execution_tool_result', |
| 519 | 'text_editor_code_execution_tool_result', |
| 520 | ]; |
| 521 | $strippedTools = []; |
| 522 | foreach ( $contentBlock as $item ) { |
| 523 | $type = $item['type'] ?? ''; |
| 524 | if ( in_array( $type, $serverManagedTypes, true ) && !in_array( $type, $serverResultTypes, true ) ) { |
| 525 | $strippedTools[] = ( $item['name'] ?? $type ) . ' (' . ( $item['server_name'] ?? 'server' ) . ')'; |
| 526 | } |
| 527 | } |
| 528 | if ( !empty( $strippedTools ) ) { |
| 529 | Meow_MWAI_Logging::warn( 'Anthropic: Server-managed tool call (' . implode( ', ', $strippedTools ) . |
| 530 | ') was interrupted by a function call. This is currently a limitation of the Anthropic API ' . |
| 531 | 'when MCP/server tools and function calling are used together.' ); |
| 532 | } |
| 533 | $contentBlock = array_values( array_filter( $contentBlock, function ( $item ) use ( $serverManagedTypes ) { |
| 534 | $type = $item['type'] ?? ''; |
| 535 | return !in_array( $type, $serverManagedTypes ); |
| 536 | } ) ); |
| 537 | } |
| 538 | |
| 539 | // Process each content item individually to ensure proper handling of multiple tool_use blocks |
| 540 | if ( is_array( $contentBlock ) ) { |
| 541 | foreach ( $contentBlock as &$contentItem ) { |
| 542 | if ( isset( $contentItem['type'] ) && $contentItem['type'] === 'tool_use' ) { |
| 543 | // Debug logging for tool_use blocks |
| 544 | if ( $this->core->get_option( 'queries_debug_mode' ) ) { |
| 545 | error_log( 'AI Engine: Anthropic tool_use block - ID: ' . ( $contentItem['id'] ?? 'unknown' ) . |
| 546 | ', Name: ' . ( $contentItem['name'] ?? 'unknown' ) . |
| 547 | ', Input type: ' . gettype( $contentItem['input'] ?? null ) . |
| 548 | ', Input value: ' . json_encode( $contentItem['input'] ?? null ) ); |
| 549 | } |
| 550 | |
| 551 | // Ensure input is an object, not an array |
| 552 | if ( isset( $contentItem['input'] ) ) { |
| 553 | if ( empty( $contentItem['input'] ) || ( is_array( $contentItem['input'] ) && count( $contentItem['input'] ) === 0 ) ) { |
| 554 | $contentItem['input'] = new stdClass(); |
| 555 | } |
| 556 | else { |
| 557 | // Apply replaceEmptyArrayWithObject only to the input field |
| 558 | $contentItem['input'] = $this->replaceEmptyArrayWithObject( $contentItem['input'] ); |
| 559 | } |
| 560 | } |
| 561 | else { |
| 562 | $contentItem['input'] = new stdClass(); |
| 563 | } |
| 564 | |
| 565 | // Debug logging after conversion |
| 566 | if ( $this->core->get_option( 'queries_debug_mode' ) ) { |
| 567 | error_log( 'AI Engine: After conversion - Input type: ' . gettype( $contentItem['input'] ) . |
| 568 | ', Input value: ' . json_encode( $contentItem['input'] ) ); |
| 569 | } |
| 570 | } |
| 571 | } |
| 572 | unset( $contentItem ); |
| 573 | } |
| 574 | |
| 575 | // Final debug logging before adding the message |
| 576 | if ( $this->core->get_option( 'queries_debug_mode' ) && is_array( $contentBlock ) ) { |
| 577 | error_log( 'AI Engine: Final contentBlock being added to messages: ' . json_encode( $contentBlock ) ); |
| 578 | } |
| 579 | |
| 580 | $assistantMessageIndex = count( $body['messages'] ); |
| 581 | $body['messages'][] = [ |
| 582 | 'role' => 'assistant', |
| 583 | 'content' => $contentBlock |
| 584 | ]; |
| 585 | |
| 586 | // Collect all tool results for this message |
| 587 | $toolResults = []; |
| 588 | |
| 589 | foreach ( $feedback_block['feedbacks'] as $feedback ) { |
| 590 | $feedbackValue = $feedback['reply']['value']; |
| 591 | if ( !is_string( $feedbackValue ) ) { |
| 592 | $feedbackValue = json_encode( $feedbackValue ); |
| 593 | } |
| 594 | |
| 595 | $toolResults[] = [ |
| 596 | 'type' => 'tool_result', |
| 597 | 'tool_use_id' => $feedback['request']['toolId'], |
| 598 | 'content' => [ |
| 599 | [ |
| 600 | 'type' => 'text', |
| 601 | 'text' => $feedbackValue |
| 602 | ] |
| 603 | ], |
| 604 | 'is_error' => false // Cool, Anthropic supports errors! |
| 605 | ]; |
| 606 | |
| 607 | // Note: Function result events are now emitted centrally in core.php |
| 608 | // when the function is actually executed |
| 609 | } |
| 610 | |
| 611 | // Add all tool results in a single user message |
| 612 | // Anthropic requires all tool_results for a message to be in one content array |
| 613 | if ( !empty( $toolResults ) ) { |
| 614 | $body['messages'][] = [ |
| 615 | 'role' => 'user', |
| 616 | 'content' => $toolResults |
| 617 | ]; |
| 618 | } |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | // TODO: This WAS COPIED FROM BELOW |
| 623 | // Support for functions |
| 624 | if ( !empty( $query->functions ) ) { |
| 625 | $model = $this->retrieve_model_info( $query->model ); |
| 626 | if ( !empty( $model['tags'] ) && !in_array( 'functions', $model['tags'] ) ) { |
| 627 | Meow_MWAI_Logging::warn( 'The model "' . $query->model . '" doesn\'t support Function Calling.' ); |
| 628 | } |
| 629 | else { |
| 630 | $body['tools'] = []; |
| 631 | // Dynamic function: they will interactively enhance the completion (tools). |
| 632 | foreach ( $query->functions as $function ) { |
| 633 | $body['tools'][] = $function->serializeForAnthropic(); |
| 634 | } |
| 635 | // Static functions: they will be executed at the end of the completion. |
| 636 | //$body['function_call'] = $query->functionCall; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | $this->maybe_add_web_search( $body, $query ); |
| 641 | |
| 642 | // To avoid errors with Anthropic's API, we need to replace empty arrays with empty objects |
| 643 | // Note: We've already handled tool_use inputs above, so no need to process them again |
| 644 | return $body; |
| 645 | } |
| 646 | else if ( $query instanceof Meow_MWAI_Query_Text ) { |
| 647 | $body = [ |
| 648 | 'model' => $query->model, |
| 649 | 'stream' => !is_null( $streamCallback ), |
| 650 | ]; |
| 651 | |
| 652 | if ( !empty( $query->maxTokens ) ) { |
| 653 | $body['max_tokens'] = $query->maxTokens; |
| 654 | } |
| 655 | else { |
| 656 | // https://docs.anthropic.com/en/docs/about-claude/models#model-comparison-table |
| 657 | $body['max_tokens'] = 4096; |
| 658 | } |
| 659 | |
| 660 | // Null means "not set"; 0 is a valid temperature and must still be sent. |
| 661 | if ( isset( $query->temperature ) && $this->model_supports_temperature( $query->model ) ) { |
| 662 | $body['temperature'] = $query->temperature; |
| 663 | } |
| 664 | |
| 665 | if ( !empty( $query->stop ) ) { |
| 666 | $body['stop'] = $query->stop; |
| 667 | } |
| 668 | |
| 669 | // Build system prompt with caching support. |
| 670 | // Instructions are cached (static per chatbot), context is not (varies per query). |
| 671 | $systemBlocks = []; |
| 672 | if ( !empty( $query->instructions ) ) { |
| 673 | $systemBlocks[] = [ |
| 674 | 'type' => 'text', |
| 675 | 'text' => $query->instructions, |
| 676 | 'cache_control' => [ 'type' => 'ephemeral' ] |
| 677 | ]; |
| 678 | } |
| 679 | if ( !empty( $query->context ) ) { |
| 680 | $framedContext = $this->core->frame_context( $query->context ); |
| 681 | $systemBlocks[] = [ |
| 682 | 'type' => 'text', |
| 683 | 'text' => $framedContext |
| 684 | ]; |
| 685 | } |
| 686 | if ( !empty( $systemBlocks ) ) { |
| 687 | $body['system'] = $systemBlocks; |
| 688 | } |
| 689 | |
| 690 | // Support for functions |
| 691 | if ( !empty( $query->functions ) ) { |
| 692 | $model = $this->retrieve_model_info( $query->model ); |
| 693 | if ( !empty( $model['tags'] ) && !in_array( 'functions', $model['tags'] ) ) { |
| 694 | Meow_MWAI_Logging::warn( 'The model "' . $query->model . '" doesn\'t support Function Calling.' ); |
| 695 | } |
| 696 | else { |
| 697 | $body['tools'] = []; |
| 698 | // Dynamic function: they will interactively enhance the completion (tools). |
| 699 | foreach ( $query->functions as $function ) { |
| 700 | $body['tools'][] = $function->serializeForAnthropic(); |
| 701 | } |
| 702 | // Static functions: they will be executed at the end of the completion. |
| 703 | //$body['function_call'] = $query->functionCall; |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | $body['messages'] = $this->build_messages( $query ); |
| 708 | |
| 709 | // Add MCP servers if available |
| 710 | if ( isset( $query->mcpServers ) && is_array( $query->mcpServers ) && !empty( $query->mcpServers ) ) { |
| 711 | $mcp_envs = $this->core->get_option( 'mcp_envs' ); |
| 712 | $this->mcpServerNames = []; // Reset MCP server names |
| 713 | |
| 714 | // Resolve all MCP servers from their IDs |
| 715 | $resolved_servers = []; |
| 716 | foreach ( $query->mcpServers as $mcpServer ) { |
| 717 | if ( isset( $mcpServer['id'] ) ) { |
| 718 | foreach ( $mcp_envs as $env ) { |
| 719 | if ( $env['id'] === $mcpServer['id'] ) { |
| 720 | $resolved_servers[] = $env; |
| 721 | break; |
| 722 | } |
| 723 | } |
| 724 | } |
| 725 | } |
| 726 | |
| 727 | // Allow filtering the full list of MCP servers |
| 728 | $resolved_servers = apply_filters( 'mwai_ai_mcp_servers', $resolved_servers, $query ); |
| 729 | |
| 730 | // Build API-specific MCP config |
| 731 | $body['mcp_servers'] = []; |
| 732 | foreach ( $resolved_servers as $env ) { |
| 733 | $mcp_config = [ |
| 734 | 'type' => 'url', |
| 735 | 'url' => $env['url'], |
| 736 | 'name' => $env['name'], |
| 737 | 'tool_configuration' => [ |
| 738 | 'enabled' => true |
| 739 | ] |
| 740 | ]; |
| 741 | |
| 742 | // Add authorization token if available |
| 743 | if ( !empty( $env['token'] ) ) { |
| 744 | $mcp_config['authorization_token'] = $env['token']; |
| 745 | } |
| 746 | |
| 747 | $body['mcp_servers'][] = $mcp_config; |
| 748 | $this->mcpServerNames[] = $env['name']; // Track MCP server names |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | // Add code_execution tool if code_interpreter is enabled |
| 753 | if ( !empty( $query->tools ) && is_array( $query->tools ) && in_array( 'code_interpreter', $query->tools ) ) { |
| 754 | if ( !isset( $body['tools'] ) ) { |
| 755 | $body['tools'] = []; |
| 756 | } |
| 757 | $body['tools'][] = [ |
| 758 | 'type' => 'code_execution_20250825', |
| 759 | 'name' => 'code_execution' |
| 760 | ]; |
| 761 | // Anthropic recommends a system-prompt hint whenever code_execution is |
| 762 | // paired with user-defined tools, otherwise Claude often refuses to |
| 763 | // use the sandbox because it can't tell which environment to run in. |
| 764 | // https://platform.claude.com/docs/en/docs/agents-and-tools/tool-use/code-execution-tool |
| 765 | $code_exec_hint = 'You have the built-in code_execution tool, which runs Python and bash commands' |
| 766 | . ' in an Anthropic-hosted sandboxed container. Use it whenever computation, shell commands,' |
| 767 | . ' file processing, or data analysis would help. It is separate from any client-provided' |
| 768 | . ' functions; state is not shared between them.'; |
| 769 | if ( !isset( $body['system'] ) ) { |
| 770 | $body['system'] = []; |
| 771 | } |
| 772 | $body['system'][] = [ 'type' => 'text', 'text' => $code_exec_hint ]; |
| 773 | Meow_MWAI_Logging::log( 'Anthropic: Added code_execution tool to request' ); |
| 774 | } |
| 775 | |
| 776 | $this->maybe_add_web_search( $body, $query ); |
| 777 | |
| 778 | return $body; |
| 779 | } |
| 780 | else { |
| 781 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | protected function stream_data_handler( $json ) { |
| 786 | $content = null; |
| 787 | $type = !empty( $json['type'] ) ? $json['type'] : null; |
| 788 | if ( is_null( $type ) ) { |
| 789 | return $content; |
| 790 | } |
| 791 | |
| 792 | if ( $type === 'message_start' ) { |
| 793 | $usage = $json['message']['usage']; |
| 794 | $this->streamInTokens = $usage['input_tokens']; |
| 795 | $this->inModel = $json['message']['model']; |
| 796 | $this->inId = $json['message']['id']; |
| 797 | |
| 798 | // Send MCP discovery event if MCP servers are configured |
| 799 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 800 | if ( !empty( $this->mcpServerNames ) ) { |
| 801 | $serverCount = count( $this->mcpServerNames ); |
| 802 | |
| 803 | // Get MCP tools count |
| 804 | $mcpTools = apply_filters( 'mwai_mcp_tools', [] ); |
| 805 | $toolCount = count( $mcpTools ); |
| 806 | |
| 807 | $event = Meow_MWAI_Event::mcp_discovery( $serverCount, $toolCount ) |
| 808 | ->set_metadata( 'servers', $this->mcpServerNames ); |
| 809 | call_user_func( $this->streamCallback, $event ); |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | else if ( $type === 'content_block_start' ) { |
| 814 | $this->streamBlocks['content'][] = $json['content_block']; |
| 815 | |
| 816 | // Send "Generating response..." when we start a text block |
| 817 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 818 | $block = $json['content_block']; |
| 819 | if ( $block['type'] === 'text' && !$this->textStarted ) { |
| 820 | $this->textStarted = true; |
| 821 | $event = Meow_MWAI_Event::generating_response(); |
| 822 | call_user_func( $this->streamCallback, $event ); |
| 823 | } |
| 824 | else if ( $block['type'] === 'thinking' || $block['type'] === 'redacted_thinking' ) { |
| 825 | $event = Meow_MWAI_Event::thinking( 'Thinking...' ); |
| 826 | call_user_func( $this->streamCallback, $event ); |
| 827 | } |
| 828 | } |
| 829 | } |
| 830 | else if ( $type === 'content_block_delta' ) { |
| 831 | $index = $json['index']; |
| 832 | $block = $this->streamBlocks['content'][$index]; |
| 833 | if ( $json['delta']['type'] === 'text_delta' ) { |
| 834 | $block['text'] .= $json['delta']['text']; |
| 835 | $isThinkingStart = strpos( $block['text'], '<thinking' ) === 0; |
| 836 | $isThinkingEnd = strpos( $block['text'], '</thinking>' ) === 0; |
| 837 | |
| 838 | if ( $isThinkingStart ) { |
| 839 | $this->streamIsThinking = true; |
| 840 | // Send thinking start event |
| 841 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 842 | $event = Meow_MWAI_Event::thinking( 'Thinking...' ); |
| 843 | call_user_func( $this->streamCallback, $event ); |
| 844 | } |
| 845 | } |
| 846 | if ( $isThinkingEnd ) { |
| 847 | $this->streamIsThinking = false; |
| 848 | // Send thinking end event |
| 849 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 850 | $event = Meow_MWAI_Event::thinking( 'Thinking completed.' ) |
| 851 | ->set_metadata( 'status', 'completed' ); |
| 852 | call_user_func( $this->streamCallback, $event ); |
| 853 | } |
| 854 | } |
| 855 | $content = $json['delta']['text']; |
| 856 | } |
| 857 | else if ( $json['delta']['type'] === 'thinking_delta' ) { |
| 858 | // Models with adaptive thinking (Sonnet 5+) stream thinking blocks. They must be |
| 859 | // accumulated in full (text + signature below), because the feedback query echoes |
| 860 | // the raw assistant message back and the API rejects incomplete thinking blocks. |
| 861 | $block['thinking'] = ( $block['thinking'] ?? '' ) . $json['delta']['thinking']; |
| 862 | } |
| 863 | else if ( $json['delta']['type'] === 'signature_delta' ) { |
| 864 | $block['signature'] = ( $block['signature'] ?? '' ) . $json['delta']['signature']; |
| 865 | } |
| 866 | else if ( $json['delta']['type'] === 'input_json_delta' ) { |
| 867 | // Somehow, the input is set as an array, but it should be a string since it's JSON. |
| 868 | $block['input'] = is_array( $block['input'] ) ? '' : $block['input']; |
| 869 | $block['input'] .= $json['delta']['partial_json']; |
| 870 | |
| 871 | // Skip sending tool arguments event - too verbose |
| 872 | // if ( $this->currentDebugMode && $this->streamCallback && isset($block['type']) && $block['type'] === 'tool_use' ) { |
| 873 | // $event = ( new Meow_MWAI_Event( 'live', MWAI_STREAM_TYPES['TOOL_ARGS'] ) ) |
| 874 | // ->set_content( 'Streaming tool arguments...' ) |
| 875 | // ->set_metadata( 'tool_name', $block['name'] ?? 'unknown' ) |
| 876 | // ->set_metadata( 'partial_args', $json['delta']['partial_json'] ); |
| 877 | // call_user_func( $this->streamCallback, $event ); |
| 878 | // } |
| 879 | } |
| 880 | $this->streamBlocks['content'][$index] = $block; |
| 881 | } |
| 882 | // At the end of a block, let's look for any 'input' not yet decoded from JSON |
| 883 | else if ( $type === 'content_block_stop' ) { |
| 884 | $index = $json['index']; |
| 885 | $block = $this->streamBlocks['content'][$index]; |
| 886 | if ( isset( $block['input'] ) && is_string( $block['input'] ) ) { |
| 887 | $block['input'] = json_decode( $block['input'], true ); |
| 888 | } |
| 889 | |
| 890 | // For tool_use blocks, ensure empty inputs are objects, not arrays |
| 891 | if ( $block['type'] === 'tool_use' && isset( $block['input'] ) ) { |
| 892 | if ( empty( $block['input'] ) || ( is_array( $block['input'] ) && count( $block['input'] ) === 0 ) ) { |
| 893 | $block['input'] = new stdClass(); |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | $this->streamBlocks['content'][$index] = $block; |
| 898 | |
| 899 | // Send event for content block completion |
| 900 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 901 | if ( $block['type'] === 'mcp_tool_use' ) { |
| 902 | // Store the tool name for later lookup when we get the result |
| 903 | $this->mcpTools[$block['id']] = $block['name']; |
| 904 | |
| 905 | $event = Meow_MWAI_Event::mcp_calling( $block['name'], $block['id'], $block['input'] ?? [] ) |
| 906 | ->set_metadata( 'server_name', $block['server_name'] ?? 'unknown' ); |
| 907 | call_user_func( $this->streamCallback, $event ); |
| 908 | } |
| 909 | else if ( $block['type'] === 'mcp_tool_result' ) { |
| 910 | // Look up the tool name from the tool_use_id |
| 911 | $tool_use_id = $block['tool_use_id'] ?? ''; |
| 912 | $tool_name = isset( $this->mcpTools[$tool_use_id] ) ? $this->mcpTools[$tool_use_id] : 'unknown'; |
| 913 | |
| 914 | $event = Meow_MWAI_Event::mcp_result( $tool_name, $tool_use_id ) |
| 915 | ->set_metadata( 'content', $block['content'] ?? '' ); |
| 916 | call_user_func( $this->streamCallback, $event ); |
| 917 | } |
| 918 | else if ( $block['type'] === 'tool_use' ) { |
| 919 | // Regular tool use (non-MCP) |
| 920 | $event = Meow_MWAI_Event::function_calling( $block['name'] ?? 'unknown', $block['input'] ?? [] ) |
| 921 | ->set_metadata( 'tool_id', $block['id'] ?? '' ); |
| 922 | call_user_func( $this->streamCallback, $event ); |
| 923 | } |
| 924 | else if ( $block['type'] === 'thinking' || $block['type'] === 'redacted_thinking' ) { |
| 925 | $event = Meow_MWAI_Event::thinking( 'Thinking completed.' ) |
| 926 | ->set_metadata( 'status', 'completed' ); |
| 927 | call_user_func( $this->streamCallback, $event ); |
| 928 | } |
| 929 | else if ( $block['type'] === 'text' ) { |
| 930 | // Don't send any event here - the text generation is handled by content deltas |
| 931 | // and completion is handled by message_stop |
| 932 | } |
| 933 | else if ( $block['type'] === 'ping' ) { |
| 934 | // https://docs.anthropic.com/en/docs/build-with-claude/streaming#ping-events |
| 935 | } |
| 936 | else { |
| 937 | Meow_MWAI_Logging::log( 'Anthropic: Unknown block type in content_block_stop: ' . $block['type'] ); |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | else if ( $type === 'message_delta' ) { |
| 942 | $usage = $json['usage']; |
| 943 | $this->streamOutTokens = $usage['output_tokens']; |
| 944 | // Carry the stop_reason so create_choices() can detect a safety refusal. |
| 945 | if ( isset( $json['delta']['stop_reason'] ) ) { |
| 946 | $this->streamBlocks['stop_reason'] = $json['delta']['stop_reason']; |
| 947 | } |
| 948 | } |
| 949 | else if ( $type === 'error' ) { |
| 950 | $error = $json['error']; |
| 951 | $message = $error['message']; |
| 952 | |
| 953 | // Send error event |
| 954 | if ( $this->currentDebugMode && $this->streamCallback ) { |
| 955 | $event = Meow_MWAI_Event::error( $message ) |
| 956 | ->set_metadata( 'error_type', $error['type'] ?? 'unknown' ); |
| 957 | call_user_func( $this->streamCallback, $event ); |
| 958 | } |
| 959 | |
| 960 | throw new Exception( $message ); |
| 961 | } |
| 962 | else if ( $type === 'message_stop' ) { |
| 963 | // Skip sending completion event - too verbose |
| 964 | // if ( $this->currentDebugMode && $this->streamCallback ) { |
| 965 | // $event = Meow_MWAI_Event::stream_completed() |
| 966 | // ->set_metadata( 'total_tokens', ($this->streamInTokens ?? 0) + ($this->streamOutTokens ?? 0) ); |
| 967 | // call_user_func( $this->streamCallback, $event ); |
| 968 | // } |
| 969 | } |
| 970 | else if ( $type === 'ping' ) { |
| 971 | // Documented keepalive heartbeat, nothing to do. |
| 972 | // https://docs.anthropic.com/en/docs/build-with-claude/streaming#event-types |
| 973 | } |
| 974 | else if ( $type === 'keepalive' ) { |
| 975 | // Forward keepalive as SSE comment to keep browser connection alive during long MCP calls |
| 976 | echo ": keepalive\n\n"; |
| 977 | if ( ob_get_level() > 0 ) { |
| 978 | ob_end_flush(); |
| 979 | } |
| 980 | flush(); |
| 981 | } |
| 982 | else { |
| 983 | Meow_MWAI_Logging::log( "Anthropic: Unknown stream data type: $type" ); |
| 984 | } |
| 985 | |
| 986 | // Avoid some endings |
| 987 | $endings = [ '<|im_end|>', '</s>' ]; |
| 988 | if ( in_array( $content, $endings ) ) { |
| 989 | $content = null; |
| 990 | } |
| 991 | |
| 992 | // If the stream is thinking, we don't want to return anything yet. |
| 993 | if ( $this->streamIsThinking ) { |
| 994 | $content = null; |
| 995 | } |
| 996 | |
| 997 | return ( $content === '0' || !empty( $content ) ) ? $content : null; |
| 998 | } |
| 999 | |
| 1000 | // This create the "choices" (even though, often, it is only one choice). |
| 1001 | // It is basically the reply, but one that is understood by the Meow_MWAI_Reply class. |
| 1002 | public function create_choices( $data ) { |
| 1003 | $returned_choices = []; |
| 1004 | $tool_calls = []; |
| 1005 | $text_content = ''; |
| 1006 | |
| 1007 | // First, collect all tool calls and text content |
| 1008 | foreach ( $data['content'] as $content ) { |
| 1009 | if ( $content['type'] === 'tool_use' ) { |
| 1010 | // Collect all tool calls |
| 1011 | $arguments = $content['input'] ?? new stdClass(); |
| 1012 | |
| 1013 | // Ensure arguments is properly formatted |
| 1014 | if ( empty( $arguments ) ) { |
| 1015 | $arguments = new stdClass(); |
| 1016 | } |
| 1017 | else if ( is_array( $arguments ) && count( $arguments ) === 0 ) { |
| 1018 | $arguments = new stdClass(); |
| 1019 | } |
| 1020 | |
| 1021 | $tool_calls[] = [ |
| 1022 | 'id' => $content['id'], |
| 1023 | 'type' => 'function', |
| 1024 | 'function' => [ |
| 1025 | 'name' => $content['name'], |
| 1026 | 'arguments' => $arguments, |
| 1027 | ] |
| 1028 | ]; |
| 1029 | } |
| 1030 | else if ( $content['type'] === 'text' ) { |
| 1031 | $text_content .= $content['text']; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | // Create a single choice with both tool calls and text content (like OpenAI does) |
| 1036 | $message = []; |
| 1037 | |
| 1038 | if ( !empty( $text_content ) ) { |
| 1039 | $message['content'] = $text_content; |
| 1040 | } |
| 1041 | |
| 1042 | if ( !empty( $tool_calls ) ) { |
| 1043 | $message['tool_calls'] = $tool_calls; |
| 1044 | } |
| 1045 | |
| 1046 | // Only create a choice if there's content or tool calls |
| 1047 | if ( !empty( $message ) ) { |
| 1048 | $returned_choices[] = [ |
| 1049 | 'message' => $message |
| 1050 | ]; |
| 1051 | } |
| 1052 | |
| 1053 | // Safety refusal (Claude Fable 5 and newer): the request was declined by a |
| 1054 | // safety classifier, so there is no content. Surface a readable message |
| 1055 | // instead of letting the reply come back empty. |
| 1056 | if ( empty( $returned_choices ) && ( $data['stop_reason'] ?? '' ) === 'refusal' ) { |
| 1057 | $category = $data['stop_details']['category'] ?? null; |
| 1058 | if ( !empty( $category ) ) { |
| 1059 | Meow_MWAI_Logging::log( 'Anthropic: Request refused by safety classifier (category: ' . $category . ').' ); |
| 1060 | } |
| 1061 | $returned_choices[] = [ |
| 1062 | 'message' => [ |
| 1063 | 'content' => __( 'This request was declined by the model\'s safety system. Please rephrase your message and try again.', 'ai-engine' ) |
| 1064 | ] |
| 1065 | ]; |
| 1066 | } |
| 1067 | |
| 1068 | return $returned_choices; |
| 1069 | } |
| 1070 | |
| 1071 | /** |
| 1072 | * Override reset to include Anthropic-specific state |
| 1073 | */ |
| 1074 | protected function reset_request_state() { |
| 1075 | parent::reset_request_state(); |
| 1076 | |
| 1077 | // Reset Anthropic-specific state |
| 1078 | $this->mcpTools = []; |
| 1079 | $this->mcpToolCount = 0; |
| 1080 | // Note: mcpServerNames is configuration, not request state |
| 1081 | } |
| 1082 | |
| 1083 | public function run_completion_query( $query, $streamCallback = null ): Meow_MWAI_Reply { |
| 1084 | // Reset request-specific state to prevent leakage between requests |
| 1085 | $this->reset_request_state(); |
| 1086 | |
| 1087 | $isStreaming = !is_null( $streamCallback ); |
| 1088 | |
| 1089 | // Initialize debug mode |
| 1090 | $this->init_debug_mode( $query ); |
| 1091 | |
| 1092 | // IMPORTANT: Prepare query BEFORE setting up streaming hooks |
| 1093 | // The streaming hook intercepts ALL wp_remote_* calls, so preparation must happen first |
| 1094 | $this->prepare_query( $query ); |
| 1095 | |
| 1096 | if ( $isStreaming ) { |
| 1097 | $this->streamCallback = $streamCallback; |
| 1098 | add_action( 'http_api_curl', [ $this, 'stream_handler' ], 10, 3 ); |
| 1099 | } |
| 1100 | |
| 1101 | $this->reset_stream(); |
| 1102 | $data = null; |
| 1103 | $body = $this->build_body( $query, $streamCallback ); |
| 1104 | $url = $this->build_url( $query ); |
| 1105 | $headers = $this->build_headers( $query ); |
| 1106 | $options = $this->build_options( $headers, $body ); |
| 1107 | |
| 1108 | // Emit "Request sent" event for feedback queries |
| 1109 | if ( $this->currentDebugMode && !empty( $streamCallback ) && |
| 1110 | ( $query instanceof Meow_MWAI_Query_Feedback || $query instanceof Meow_MWAI_Query_AssistFeedback ) ) { |
| 1111 | $event = Meow_MWAI_Event::request_sent() |
| 1112 | ->set_metadata( 'is_feedback', true ) |
| 1113 | ->set_metadata( 'feedback_count', count( $query->blocks ) ); |
| 1114 | call_user_func( $streamCallback, $event ); |
| 1115 | } |
| 1116 | |
| 1117 | try { |
| 1118 | $reply = new Meow_MWAI_Reply( $query ); |
| 1119 | $returned_id = null; |
| 1120 | $returned_model = null; |
| 1121 | $returned_choices = []; |
| 1122 | |
| 1123 | // The MCP connector can pause a long turn (stop_reason: pause_turn); |
| 1124 | // the conversation must be sent back with the partial assistant content |
| 1125 | // so Claude continues where it left off. Capped to avoid infinite loops. |
| 1126 | $accumulated_content = []; |
| 1127 | $continuations = 0; |
| 1128 | |
| 1129 | while ( true ) { |
| 1130 | $res = $this->run_query( $url, $options, $streamCallback ); |
| 1131 | |
| 1132 | // Streaming Mode |
| 1133 | if ( $isStreaming ) { |
| 1134 | $returned_id = $this->inId; |
| 1135 | $returned_model = $this->inModel ? $this->inModel : $query->model; |
| 1136 | if ( !is_null( $this->streamInTokens && !is_null( $this->streamOutTokens ) ) ) { |
| 1137 | $returned_in_tokens = ( $returned_in_tokens ?? 0 ) + (int) $this->streamInTokens; |
| 1138 | $returned_out_tokens = ( $returned_out_tokens ?? 0 ) + (int) $this->streamOutTokens; |
| 1139 | } |
| 1140 | $data = $this->streamBlocks; |
| 1141 | } |
| 1142 | // Standard Mode |
| 1143 | else { |
| 1144 | $data = $res['data']; |
| 1145 | $returned_id = $data['id']; |
| 1146 | $returned_model = $data['model']; |
| 1147 | $usage = $data['usage']; |
| 1148 | if ( !empty( $usage ) ) { |
| 1149 | $returned_in_tokens = ( $returned_in_tokens ?? 0 ) + (int) ( $usage['input_tokens'] ?? 0 ); |
| 1150 | $returned_out_tokens = ( $returned_out_tokens ?? 0 ) + (int) ( $usage['output_tokens'] ?? 0 ); |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | // Clean up tool_use/mcp_tool_use inputs in the raw data BEFORE it gets |
| 1155 | // stored or resent (Anthropic requires input to be an object, and an |
| 1156 | // empty {} decodes to [] in PHP). |
| 1157 | if ( isset( $data['content'] ) && is_array( $data['content'] ) ) { |
| 1158 | foreach ( $data['content'] as &$content ) { |
| 1159 | if ( in_array( $content['type'] ?? '', [ 'tool_use', 'mcp_tool_use' ], true ) ) { |
| 1160 | // Streamed blocks can end with input null (no args), an empty |
| 1161 | // array (decoded {}), or a JSON string (accumulated deltas). |
| 1162 | if ( isset( $content['input'] ) && is_string( $content['input'] ) && $content['input'] !== '' ) { |
| 1163 | $decoded = json_decode( $content['input'], true ); |
| 1164 | $content['input'] = is_array( $decoded ) && count( $decoded ) ? $decoded : new stdClass(); |
| 1165 | } |
| 1166 | if ( empty( $content['input'] ) ) { |
| 1167 | $content['input'] = new stdClass(); |
| 1168 | } |
| 1169 | } |
| 1170 | } |
| 1171 | unset( $content ); |
| 1172 | } |
| 1173 | |
| 1174 | $accumulated_content = array_merge( $accumulated_content, $data['content'] ?? [] ); |
| 1175 | |
| 1176 | // A turn needs continuing when it is explicitly paused (pause_turn), or |
| 1177 | // when a streamed MCP turn is cut without any stop_reason while tool |
| 1178 | // calls are still unresolved (Anthropic drops the stream while its MCP |
| 1179 | // client executes slow tools). Resending the partial assistant content |
| 1180 | // either resumes the turn, or surfaces Anthropic's real MCP error. |
| 1181 | $turnContent = $data['content'] ?? []; |
| 1182 | $lastBlockType = count( $turnContent ) ? ( $turnContent[count( $turnContent ) - 1]['type'] ?? '' ) : ''; |
| 1183 | $unresolvedMcp = empty( $data['stop_reason'] ) && $lastBlockType === 'mcp_tool_use'; |
| 1184 | if ( ( ( $data['stop_reason'] ?? '' ) !== 'pause_turn' && !$unresolvedMcp ) || $continuations >= 5 ) { |
| 1185 | break; |
| 1186 | } |
| 1187 | |
| 1188 | $continuations++; |
| 1189 | Meow_MWAI_Logging::log( 'Anthropic: Turn paused (' . ( $data['stop_reason'] ?? 'stream cut on MCP' ) . '), continuing (' . $continuations . ').' ); |
| 1190 | $body['messages'][] = [ 'role' => 'assistant', 'content' => $data['content'] ]; |
| 1191 | $options = $this->build_options( $headers, $body ); |
| 1192 | if ( $isStreaming ) { |
| 1193 | $this->reset_stream(); |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | $data['content'] = $accumulated_content; |
| 1198 | $returned_choices = $this->create_choices( $data ); |
| 1199 | |
| 1200 | $reply->set_choices( $returned_choices, $data ); |
| 1201 | if ( !empty( $returned_id ) ) { |
| 1202 | $reply->set_id( $returned_id ); |
| 1203 | } |
| 1204 | |
| 1205 | // Handle tokens. |
| 1206 | $this->handle_tokens_usage( |
| 1207 | $reply, |
| 1208 | $query, |
| 1209 | $returned_model, |
| 1210 | $returned_in_tokens, |
| 1211 | $returned_out_tokens |
| 1212 | ); |
| 1213 | |
| 1214 | return $reply; |
| 1215 | } |
| 1216 | catch ( Exception $e ) { |
| 1217 | $error = $e->getMessage(); |
| 1218 | $json = json_decode( $error, true ); |
| 1219 | if ( json_last_error() === JSON_ERROR_NONE ) { |
| 1220 | if ( isset( $json['error'] ) && isset( $json['error']['message'] ) ) { |
| 1221 | $error = $json['error']['message']; |
| 1222 | } |
| 1223 | } |
| 1224 | Meow_MWAI_Logging::error( '(Anthropic) ' . $error ); |
| 1225 | $service = $this->get_service_name(); |
| 1226 | $message = "From $service: " . $error; |
| 1227 | throw new Exception( $message ); |
| 1228 | } |
| 1229 | finally { |
| 1230 | if ( $isStreaming ) { |
| 1231 | remove_action( 'http_api_curl', [ $this, 'stream_handler' ] ); |
| 1232 | } |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | protected function build_options( $headers, $json = null, $forms = null, $method = 'POST' ) { |
| 1237 | $body = null; |
| 1238 | if ( !empty( $forms ) ) { |
| 1239 | $boundary = wp_generate_password( 24, false ); |
| 1240 | $headers['Content-Type'] = 'multipart/form-data; boundary=' . $boundary; |
| 1241 | $body = $this->build_form_body( $forms, $boundary ); |
| 1242 | } |
| 1243 | else if ( !empty( $json ) ) { |
| 1244 | // For Anthropic, we need to ensure empty objects stay as objects, not arrays |
| 1245 | // JSON_FORCE_OBJECT would force everything to be an object, which we don't want |
| 1246 | // Instead, we've already converted empty arrays to stdClass in build_body |
| 1247 | $body = $this->safe_json_encode( $json, 'request body' ); |
| 1248 | |
| 1249 | // Debug logging to verify JSON encoding |
| 1250 | if ( $this->core->get_option( 'queries_debug_mode' ) ) { |
| 1251 | // Check if the body contains tool_use blocks with empty inputs |
| 1252 | if ( strpos( $body, '"tool_use"' ) !== false ) { |
| 1253 | error_log( 'AI Engine: Anthropic JSON body after encoding (first 1000 chars): ' . substr( $body, 0, 1000 ) ); |
| 1254 | |
| 1255 | // Check specifically for "input":[] which would be wrong |
| 1256 | if ( strpos( $body, '"input":[]' ) !== false ) { |
| 1257 | error_log( 'AI Engine: WARNING - Found "input":[] in JSON body, this should be "input":{} for Anthropic API' ); |
| 1258 | } |
| 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | $options = [ |
| 1263 | 'headers' => $headers, |
| 1264 | 'method' => $method, |
| 1265 | 'timeout' => MWAI_TIMEOUT, |
| 1266 | 'body' => $body, |
| 1267 | 'sslverify' => MWAI_SSL_VERIFY |
| 1268 | ]; |
| 1269 | return $options; |
| 1270 | } |
| 1271 | |
| 1272 | protected function get_service_name() { |
| 1273 | return 'Anthropic'; |
| 1274 | } |
| 1275 | |
| 1276 | public function get_models() { |
| 1277 | return apply_filters( 'mwai_anthropic_models', MWAI_ANTHROPIC_MODELS ); |
| 1278 | } |
| 1279 | |
| 1280 | public static function get_models_static() { |
| 1281 | return MWAI_ANTHROPIC_MODELS; |
| 1282 | } |
| 1283 | |
| 1284 | public function handle_tokens_usage( |
| 1285 | $reply, |
| 1286 | $query, |
| 1287 | $returned_model, |
| 1288 | $returned_in_tokens, |
| 1289 | $returned_out_tokens, |
| 1290 | $returned_price = null |
| 1291 | ) { |
| 1292 | $returned_in_tokens = !is_null( $returned_in_tokens ) ? |
| 1293 | $returned_in_tokens : $reply->get_in_tokens( $query ); |
| 1294 | $returned_out_tokens = !is_null( $returned_out_tokens ) ? |
| 1295 | $returned_out_tokens : $reply->get_out_tokens(); |
| 1296 | if ( !empty( $reply->id ) ) { |
| 1297 | // Would be cool to retrieve the usage from the API, but it's not possible. |
| 1298 | } |
| 1299 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 1300 | $reply->set_usage( $usage ); |
| 1301 | |
| 1302 | // Set accuracy based on data availability |
| 1303 | if ( !is_null( $returned_in_tokens ) && !is_null( $returned_out_tokens ) ) { |
| 1304 | // Anthropic provides token counts from API = tokens accuracy |
| 1305 | $reply->set_usage_accuracy( 'tokens' ); |
| 1306 | } |
| 1307 | else { |
| 1308 | // Fallback to estimated |
| 1309 | $reply->set_usage_accuracy( 'estimated' ); |
| 1310 | } |
| 1311 | } |
| 1312 | |
| 1313 | public function get_price( Meow_MWAI_Query_Base $query, Meow_MWAI_Reply $reply ) { |
| 1314 | return parent::get_price( $query, $reply ); |
| 1315 | } |
| 1316 | |
| 1317 | /** |
| 1318 | * Check the connection to Anthropic by listing available models. |
| 1319 | */ |
| 1320 | public function connection_check() { |
| 1321 | try { |
| 1322 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 1323 | $url = trailingslashit( $endpoint ) . 'models'; |
| 1324 | |
| 1325 | $response = wp_remote_get( $url, [ |
| 1326 | 'headers' => [ |
| 1327 | 'x-api-key' => $this->apiKey, |
| 1328 | 'anthropic-version' => '2023-06-01', |
| 1329 | ], |
| 1330 | 'timeout' => 30, |
| 1331 | ] ); |
| 1332 | |
| 1333 | if ( is_wp_error( $response ) ) { |
| 1334 | throw new Exception( $response->get_error_message() ); |
| 1335 | } |
| 1336 | |
| 1337 | $code = wp_remote_retrieve_response_code( $response ); |
| 1338 | $body = json_decode( wp_remote_retrieve_body( $response ), true ); |
| 1339 | |
| 1340 | if ( $code === 401 || ( isset( $body['error']['type'] ) && $body['error']['type'] === 'authentication_error' ) ) { |
| 1341 | throw new Exception( 'Invalid API key' ); |
| 1342 | } |
| 1343 | |
| 1344 | if ( $code !== 200 ) { |
| 1345 | throw new Exception( 'Connection failed: ' . ( $body['error']['message'] ?? "HTTP $code" ) ); |
| 1346 | } |
| 1347 | |
| 1348 | $availableModels = []; |
| 1349 | if ( isset( $body['data'] ) && is_array( $body['data'] ) ) { |
| 1350 | foreach ( array_slice( $body['data'], 0, 10 ) as $model ) { |
| 1351 | $availableModels[] = $model['id'] ?? 'unknown'; |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | return [ |
| 1356 | 'models' => $availableModels, |
| 1357 | 'service' => 'Anthropic' |
| 1358 | ]; |
| 1359 | } |
| 1360 | catch ( Exception $e ) { |
| 1361 | throw new Exception( 'Connection failed: ' . $e->getMessage() ); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | /** |
| 1366 | * Upload a file to Anthropic Files API |
| 1367 | * |
| 1368 | * @param string $filename The name of the file |
| 1369 | * @param string $data The file content (binary) |
| 1370 | * @param string $purpose For Anthropic, this is the MIME type (API difference from OpenAI) |
| 1371 | * @return array The response from the API containing file_id |
| 1372 | * @throws Exception If upload fails |
| 1373 | */ |
| 1374 | public function upload_file( $filename, $data, $purpose = 'application/pdf' ) { |
| 1375 | global $wp_filter; |
| 1376 | |
| 1377 | // For Anthropic, $purpose is actually the MIME type (different from OpenAI's API) |
| 1378 | $mimeType = $purpose; |
| 1379 | |
| 1380 | // Build multipart form data |
| 1381 | $boundary = wp_generate_password( 24, false ); |
| 1382 | $body = ''; |
| 1383 | $body .= "--$boundary\r\n"; |
| 1384 | $body .= "Content-Disposition: form-data; name=\"file\"; filename=\"{$filename}\"\r\n"; |
| 1385 | $body .= 'Content-Type: ' . $mimeType . "\r\n\r\n"; |
| 1386 | $body .= $data . "\r\n"; |
| 1387 | $body .= "--$boundary\r\n"; |
| 1388 | $body .= "Content-Disposition: form-data; name=\"mime_type\"\r\n\r\n"; |
| 1389 | $body .= $mimeType . "\r\n"; |
| 1390 | $body .= "--$boundary--\r\n"; |
| 1391 | |
| 1392 | // Temporarily remove ALL http_api_curl hooks to prevent streaming hook interference |
| 1393 | // Save current hooks |
| 1394 | $saved_hooks = null; |
| 1395 | if ( isset( $wp_filter['http_api_curl'] ) ) { |
| 1396 | $saved_hooks = $wp_filter['http_api_curl']; |
| 1397 | unset( $wp_filter['http_api_curl'] ); |
| 1398 | } |
| 1399 | |
| 1400 | // Upload using WordPress HTTP API |
| 1401 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 1402 | $url = $endpoint . '/files'; |
| 1403 | $response = wp_remote_post( $url, [ |
| 1404 | 'headers' => [ |
| 1405 | 'x-api-key' => $this->apiKey, |
| 1406 | 'anthropic-version' => '2023-06-01', |
| 1407 | 'anthropic-beta' => 'files-api-2025-04-14', |
| 1408 | 'Content-Type' => 'multipart/form-data; boundary=' . $boundary |
| 1409 | ], |
| 1410 | 'body' => $body, |
| 1411 | 'timeout' => 60 |
| 1412 | ] ); |
| 1413 | |
| 1414 | // Restore hooks |
| 1415 | if ( $saved_hooks !== null ) { |
| 1416 | $wp_filter['http_api_curl'] = $saved_hooks; |
| 1417 | } |
| 1418 | |
| 1419 | if ( is_wp_error( $response ) ) { |
| 1420 | throw new Exception( 'File upload failed: ' . $response->get_error_message() ); |
| 1421 | } |
| 1422 | |
| 1423 | $response_body = wp_remote_retrieve_body( $response ); |
| 1424 | $result = json_decode( $response_body, true ); |
| 1425 | |
| 1426 | // Check for API errors |
| 1427 | if ( isset( $result['error'] ) ) { |
| 1428 | throw new Exception( 'Anthropic Files API error: ' . ( $result['error']['message'] ?? 'Unknown error' ) ); |
| 1429 | } |
| 1430 | |
| 1431 | return $result; |
| 1432 | } |
| 1433 | |
| 1434 | /** |
| 1435 | * Delete a file from Anthropic Files API |
| 1436 | * |
| 1437 | * @param string $fileId The Anthropic file ID to delete |
| 1438 | * @return array The response from the API |
| 1439 | * @throws Exception If deletion fails |
| 1440 | */ |
| 1441 | public function delete_file( $fileId ) { |
| 1442 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 1443 | $url = $endpoint . '/files/' . $fileId; |
| 1444 | |
| 1445 | $response = wp_remote_request( $url, [ |
| 1446 | 'method' => 'DELETE', |
| 1447 | 'headers' => [ |
| 1448 | 'x-api-key' => $this->apiKey, |
| 1449 | 'anthropic-version' => '2023-06-01', |
| 1450 | 'anthropic-beta' => 'files-api-2025-04-14', |
| 1451 | ], |
| 1452 | 'timeout' => 30 |
| 1453 | ] ); |
| 1454 | |
| 1455 | if ( is_wp_error( $response ) ) { |
| 1456 | throw new Exception( 'File deletion failed: ' . $response->get_error_message() ); |
| 1457 | } |
| 1458 | |
| 1459 | $response_code = wp_remote_retrieve_response_code( $response ); |
| 1460 | $response_body = wp_remote_retrieve_body( $response ); |
| 1461 | $result = json_decode( $response_body, true ); |
| 1462 | |
| 1463 | // Check for API errors |
| 1464 | if ( $response_code >= 400 ) { |
| 1465 | $error_message = isset( $result['error']['message'] ) ? $result['error']['message'] : 'Unknown error'; |
| 1466 | throw new Exception( 'Anthropic Files API error: ' . $error_message ); |
| 1467 | } |
| 1468 | |
| 1469 | return $result; |
| 1470 | } |
| 1471 | } |
| 1472 |