AI Engine – The Chatbot, AI Framework & MCP for WordPress

Journal des modifications

3.5.1 (2026/05/17)

• Add: Popup Icon Size option in chatbot settings to resize the popup trigger without custom CSS.
• Fix: Chatbots admin preview now keeps long discussions, fullscreen toggles, and resize actions contained within the preview pane instead of clipping or overflowing the viewport.
• Fix: Chatbot rendering bug where a $ inside an inline code span caused other message text to leak into the code display.

3.5.0 (2026/05/16)

• Fix: MCP OAuth authorization and token validation now require administrator capability, preventing privilege escalation by non-admin users.
• Update: Marked gpt-5.2-chat-latest and gpt-5.3-chat-latest as deprecated (OpenAI shutting them off August 10, 2026).
• Update: Added a deprecation banner on the Finetunes screen due to OpenAI sunsetting self-serve fine-tuning.
• Fix: CSV import for fine-tuning now shows an explicit error when no usable prompt/completion columns are found.
• Fix: Updated the broken OpenAI tutorial link on the Finetunes screen.

3.4.9 (2026/05/12)

• Add: OAuth 2.1 with Dynamic Client Registration for the MCP server, allowing Claude Desktop and other browser-driven clients to connect without a shared bearer token.
• Add: Per-quality image generation (auto/low/medium/high) for GPT Image models, available in the Image Generator UI and as a global default in Settings → Images.
• Fix: Pulling a remote OpenAI vector store no longer creates entries containing raw JSON error bodies for files uploaded with purpose=assistants.
• Fix: The mwai_allow_setup filter now properly grants menu and REST API access to non-admin roles, instead of being overridden by a hardcoded manage_options check.
• Fix: Tiktoken vocab cache is now scoped per WordPress install, preventing permission conflicts on multi-tenant hosts.
• Update: Migrated OpenAI Realtime integration from the deprecated Beta endpoint to the GA API, enabling support for gpt-realtime-2 and new voice models.
• Update: Reorganized MCP settings panel with a dedicated section for Bearer Token and Access Level, and a new Connected Apps section to review and revoke OAuth grants.
• Update: Generalized the manage_options gate in shared code so each Meow Apps plugin gets its own {prefix}_allow_setup filter instead of hardcoding mwai_allow_setup.
• Update: Removed gpt-4o-realtime-preview, gpt-4o-mini-realtime-preview, and gpt-realtime-translate from the model list.
• Update: SSE transport for MCP is scheduled for removal in July 2026 and is now hidden from the UI for new users.

3.4.8 (2026/05/09)

• Fix: Resolved OpenAI Responses API « No tool output found » errors during chained recursive tool calls and static-only turns. Static-skip is now disabled for Responses API because every function_call must be answered.
• Add: Custom OpenAI-compatible provider for Ollama, LM Studio, vLLM, llama.cpp, LocalAI, and similar servers.
• Add: Built-in xAI/Grok provider with dynamic model fetching and fallback support.
• Add: Insights retention setting with daily cleanup for old log rows. Defaults to Never.
• Add: Embedding chunk metadata: source, partIndex, and partTotal, exposed through mwai_embeddings_vector_metadata for Pinecone, Qdrant, Chroma, and OpenAI Vector Store. PDF imports can now use the filename as the chunk title, and Modify Embedding can edit the new fields.
• Add: Code Engine static/dynamic Behavior now applies to Callable function snippets, skipping AI feedback when all calls are static.
• Update: Reworked onboarding with a default OpenAI environment, Knowledge provider chooser, one-click OpenAI vector store creation, no-key welcome message, and AI Assistant enabled by default.
• Update: Reworked Pro license management with a Modify License flow for Re-Validate, Modify, and Remove actions.
• Update: Hardened MCP handling by releasing PHP session locks, using proper trash hooks, deduplicating cache busts, enforcing confirm_write for non-read SQL, and purging LiteSpeed/WP Rocket caches after post writes.
• Update: Usage widget preferences for Price/Units/Queries and Daily/Monthly now persist across reloads.
• Update: Query and Reply tabs now point users to Settings > Others > Insights when data is unavailable.
• Fix: Managed-mode WP AI Client and AI Engine integrations now satisfy WordPress 7 AI plugin credential requirements, preventing false rejections for Ollama, OpenRouter, Mistral, Perplexity, and Replicate.
• Fix: Removed redundant vector-DB addon initialization to prevent idle « OpenAI Vector Store ID is not configured » logs.
• Fix: Resolved PHP 8.4 nullable-parameter deprecations in query and MCP helpers.
• Fix: ChatML base now supports string-shaped error fields in API responses.
• Update: Removed the legacy snippet-vault fallback and unused per-environment usage field.

3.4.7 (2026/04/25)

• Add: GPT-5.5, GPT Image 2, and Claude Opus 4.7 to the model lists.
• Update: Refreshed default fallback models to GPT-5.4 and GPT-5-mini, and marked several upcoming OpenAI shutdowns as deprecated (gpt-5-chat-latest, gpt-4.1-nano, o3-mini, gpt-realtime-mini, gpt-image-1, sora-2, sora-2-pro).
• Update: Major UI/UX updates! I hope you’ll enjoy them, otherwise… let me know! 😊
• Add: New Environments panel on the Dashboard with brand-colored rows, smart setup messages, and warnings for missing or deprecated default models.
• Fix: MCP write helpers (wp_alter_post, wp_update_post) were silently stripping backslashes from Unicode escapes.
• Add: Live timer on the Image Generator « Generating… » row so progress is visible.
• Fix: Auto-open is now skipped on mobile so a fullscreen chatbot no longer hijacks the screen on page load.
• Fix: AI Forms not rendering with their theme CSS when embedded via a synced Pattern.
• Add: Split print-to-PDF into its own toggle, moved behind a new « More options… » modal in Appearance settings.
• Update: Redesigned the Usage and Activity widgets with compact CSS-only stacked bars grouped by provider.
• Fix: Oversized embedding inputs are now caught before they hit OpenAI’s 8192-token limit.
• Add: System-prompt hint for Anthropic’s code_execution tool so Claude uses the sandbox instead of refusing.
• Update: Switched chatbot and form shortcode displays to the NekoShortcode component.
• Update: Functions section now appears as soon as the model supports it.

3.4.6 (2026/04/15)

• Add: Print-to-PDF button next to the copy icon on the last AI message, allowing export of the full conversation via the browser’s Save as PDF dialog.
• Add: Retention setting for discussions cleanup under Settings > Chatbot > Discussions, with a mwai_discussions_retention_days filter for overrides.
• Fix: Chatbot auto-scroll no longer fights users who scroll up during streaming.
• Fix: AI Form and Chatbot blocks no longer save as « Unsupported » placeholders when used in patterns created via Appearance > Editor.
• Fix: Hardened chatbot parameter processing so non-string values no longer crash the frontend with « trim is not a function ».
• Fix: (Hotfix) Two mobile chatbot issues — keyboard pushing header and messages off-screen, and ChatGPT theme’s submit button stretching into an oval below the input pill.
• Fix: Blocks with line breaks breaking after save in the Forms editor.
• Fix: REST MCP tools failing schema validation by forwarding nested JSON Schema fields (items, enum, default, etc.) from WordPress REST arg definitions.
• Fix: NekoUI dropdowns rendering broken inside Gutenberg block iframes.
• Fix: Temperature settings missing for Anthropic models in chatbot params.
• Fix: ai.formReply filter firing on every stream chunk instead of only once when the reply is complete.
• Update: Removed DALL-E and migrated existing defaults to gpt-image-1.
• Update: Bumped the discussions messages column from TEXT to MEDIUMTEXT.
• Update: Persisted the Query Mode and Expert Mode toggles in the Knowledge tab via localStorage.
• Update: Simplified estimate_tokens to a single-argument signature and added multi-file support to assistant queries.
• Update: Opus 4.6 and Sonnet 4.6 context window updated to 1M tokens.
• 🎵 Discuss with others about Ai Engine on the Discord.
• 🌴 Keep us motivated with a little review here. Thank you!
• 🥰 If you want to help us, check our Patreon. Thank you!
• 🚀 Click here to vote for the features you want the most.

3.4.5 (2026/03/22)

• Fix: Ensure additional CSS classes set in the block inspector.
• Fix: Stop mapping tool categories to annotation titles so MCP tools display their correct names.
• Add: Support for GPT-5.4 Pro, Mini, Nano, and GPT-5.3 Chat models.
• Fix: Resolve an MCP dispatch type mismatch that caused some MCP tools to fail.
• Update: Add new getStatus(), hasAI(), and hasMCP() API helpers (deprecated the older checkStatus() method).

3.4.4 (2026/03/15)

• Fix: Hotfix resolves MCP server connection failures with clients using protocol version 2024-11-05 by adding automatic version negotiation.
• Add: Display shortcut prompts and names in the Discussions tab.
• Add: Introduce image embeddings support (Gemini Embedding 2) with multimodal embedding: bulk media push, and an AI-powered Library Search that replaces the native Media Library Search.
• Fix: Resolve a broken access control issue in the AI Forms shortcode to ensure only authorized users can access protected content (Private Page/Post).
• Fix: Prevent crashes when working with multi‑modal messages.
• Fix: Prevent the Embeddings screen from crashing when closing a modal.
• Update: Preserve links and inline HTML formatting in both the Editor Assistant and Magic Wand tools.
• Update: Refactor Magic Wand actions to use system messages.
• Update: Clean up old, deprecated options and legacy migration code.
• Update: Fixed Quick Test for Anthropic to use the models endpoint.
• Update: Chatbot Max Height moved to the Appearance section.
• Update: Rename Assistant Mode to Chatbot Mode in AI Forms, you can now use any chatbot to handle your AI Forms.
• Fix: Improve the discussions shortcode by falling back to customId to avoid invalid class names.
• Fix: Styles for the AI Chatbot Block are back.

3.4.1 (2026/03/06)

• Update: Hide the Editor Assistant functions from the chatbot settings to simplify the interface.
• Add: Support for the new GPT-5.4 model for improved AI responses.

3.4.0 (2026/03/04)

• Add: Introduce a fully featured Editor Assistant sidebar (with a client-side feedback loop for chained AI actions). It’s called Assistant in the Admin Modules.
• Add: Introduce new dev filters (mwai_mcp_server and mwai_function_call_params) for customizing MCP servers and function call parameters.
• Add: Allow ignoring posts during embeddings sync, with a “hide” icon for linked posts, a “Show Ignored” modal, and a mwai_embeddings_sync_post filter for developers.
• Fix: Hotfix chat sessions so the chat ID resets correctly when needed.
• Fix: Restore the missing scope for AI Search.
• Update: Remove outdated internal TODOs, deprecated fields, legacy crons, and old migration code.

3.3.9 (2026/02/21)

• Add: Cross Site now support shorcuts (Quick Actions), blocks (GDPR-friendly), etc.
• Update: Modernized all Gutenberg Blocks.
• Fix: Avoid crashes caused by Claude when using MCP tools together with function calling.
• Fix: Prevent React-related crashes during streaming.

3.3.8 (2026/02/18)

• Add: Support for the Claude Sonnet 4.6 model.
• Add: Forward Anthropic keepalive events to the browser.
• Add: Make Realtime transcript captions clickable links.

3.3.7 (2026/02/14)

• Add: Introduced role-based access control for MCP with three levels (admin, read-write, read-only).
• Add: Improved Content Aware features (better placeholder replacement, more accurate context detection, etc).
• Fix: Automatic bearer token generation when MCP is first enabled.
• Update: Improvements in the Realtime module, more to come soon.
• Update: OpenAI now exclusively uses the Responses API, simplified and optimized the code.

3.3.6 (2026/02/06)

• Add: Support for the new Claude Opus 4.6 and Opus 4.5 models for improved AI responses.
• Update: Deprecated GPT-4o, GPT-4o mini, GPT-4.1, GPT-4.1 mini, and their related realtime/transcribe models to guide users toward newer, supported options.
• Update: Replaced shortcut-based data storage with AES-256 encryption to avoid cache corruption issues.
• Add: Enhanced the wp_update_post MCP tool with better truncated JSON detection, content verification, and richer response data.
• Update: Linked PDF chunks via unique refChecksum and added ref filter to embeddings table.
• Add: Added WooCommerce MCP module with 25 tools for managing products, orders, inventory, customers, reviews, and analytics.

3.3.4 (2026/01/30)

• Fix: Prevent duplicate shortcut transients from being created on every page.
• Fix: Hotfix TypeError crashes in MCP tool calls when JSON-RPC requests are missing an id field.
• Add: Introduce a new wp_upload_request MCP tool that generates one-time upload URLs so agents can upload local files via curl instead of base64.
• Add: Add a new MCP « Database » module that lets you execute SQL queries.
• Update: Remove the default popup title and AI name fallback so leaving the title field empty now shows no title at all.
• Fix: Resolve a PHP 8.2 deprecation warning related to a dynamic property.

3.3.3 (2026/01/27)

• Add: Introduce a Streamable HTTP transport for MCP so Claude Code can connect directly to WordPress.
• Fix: Prevent unsafe file renaming during metadata updates.
• Fix: Hotfix SSRF vulnerabilities by using wp_safe_remote_get for external URLs and secure URL fetching in audio transcription and file handling.
• Add: Improved embedding dimension handling with matryoshka support, showing fixed vs configurable dimensions in the UI with clearer tooltips.
• Update: Redesign and refine the ChatGPT Theme and Foundation Theme with improved layouts, bubble styling, and more flexible avatar/name display and header titles.
• Add: Introduce ‘context framing’ for embeddings with a new filter.
• Add: Moved Embeddings « Sync Settings » into Settings > Knowledge with separate Local Content and Remote URLs sections and a new Sync Interval option.
• Add: Store Shortcuts prompts securely on the server and only send a shortcutId to the client so prompt text is no longer exposed.
• Add: Load plugin translations properly with load_plugin_textdomain to ensure all text is translatable.
• Fix: Via MCP, ensure scheduled posts created via wp_update_post respect the schedule_for parameter and edit_date flag so they publish at the correct time.
• Add: New MCP integration for Polylang.
• Fix: Improve Gemini 3 support, restoring vision capabilities, function calling, and enforcing a single candidate response, and fixed image generation pricing.
• Add: Support image generation via OpenRouter.
• Fix: Resolve undefined array key warnings in Remote URL sync and only update timestamps when content actually changes.
• 🎵 Discuss with others about Ai Engine on the Discord.
• 🌴 Keep us motivated with a little review here. Thank you!
• 🥰 If you want to help us, check our Patreon. Thank you!

3.3.2 (2026/01/23)

• Add: New « Remote URL » feature for Embeddings to create and auto-sync embeddings from external URLs with change detection.
• Fix: Corrected auto-scroll behavior for non-streaming chatbots so conversations stay in view.
• Add: Enabled multi-block support for Magic Wand tools (Correct Text, Enhance Text, and Translate Text).
• Add: Introduce a user.query filter in the JS API so developers can intercept, modify, or cancel user messages before sending.
• Add: Support next_run_delay for multi-step tasks to better control task scheduling.
• Fix: Resolved an issue where multi-file uploads were empty.
• Fix: Ensured the Standard Header correctly displays the Popup Title.
• Fix: Adjusted link colors in the Timeless theme.
• Fix: Prevent shortcuts from bypassing locked chatbots (GDPR consent, for example).
• ⚠️ Important: Changed the mwai_chatbot_reply filter to pass a reply object instead of a query. Developer! Use reply->query where query was previously used.

3.3.1 (2026/01/04)

• Update: Removed unused files and code to reduce clutter and improve performance.
• Info: Wishing you a Happy New Year 2026 ☀️🎉 No doubt this year will be full of surprises again, let’s continue riding the AI wave together! 😊