Limb AI Chatbot vs Rapls AI Chatbot – Self-Hosted RAG & MCP Server

Add an AI chatbot to your WordPress site for customer support and lead generation. Train it on pages, posts, PDFs, FAQs, URLs, and more to deliver instant AI-powered answers 24/7. Capture leads with intelligent conversational forms, choose from 200+ AI models, and customize everything to match your brand—without coding. Live Demo | Documentation Why Choose AI Chatbot? ⭐ Experience True Quality — Intuitive and 100% WordPress Native. Professional-grade AI chatbot with clean code, polished UI, and extensible architecture built with industry best practices. What You Get: ✅ Customer support – Your chatbot answers common visitor questions automatically from your knowledge base with full conversation history and multi-language support, so your team spends less time on repetitive support emails. ✅ Lead Generation – Collect visitor name and email before chat starts so you can build your email list and send follow-up campaigns ✅ Conversational Forms – When visitor intent matches your setup, the chatbot collects standard fields through dialogue. Submissions are stored locally; new entries can be sent by email or Slack. Choose a conversational or widget (static) form type when you configure the form. ✅ 200+ AI Models – Native support for OpenAI (GPT-5.4 family and more), Google Gemini 3.x, Claude 4.6, DeepSeek, and Grok; plus Open Router for 200+ additional models ✅ Advanced RAG Technology – Intelligent retrieval for accurate, contextually relevant responses ✅ Cost-Optimized Usage – Smart token management minimizes API charges ✅ Knowledge Transparency – See exactly which content AI used for each response ✅ Unlimited Knowledge Base – Train on pages, posts, PDFs, text files, Q&A entries, or webpage content fetched from URLs. Auto-sync keeps WordPress sources up to date automatically ✅ Leads Management Board – Simple table to track and manage all leads collected through the Lead Generation widget or Conversational Forms ✅ Analytics Dashboard – Fast analytical board with real-time insights on new conversations, leads, visitors, form submissions, and more. Includes daily, weekly, and monthly charts for comprehensive reporting ✅ Transcripts – In the WordPress admin, open Chatbot → Transcripts to review conversation history and see which knowledge sources were used for each reply ✅ 3-Step Setup Wizard – Live in under 5 minutes with guided onboarding ✅ Rate Limiting – Control usage for guests and logged-in users ✅ Theme Support – Light mode, dark mode, and system theme options ✅ True WordPress Native – Real platform integration, not an iframe 🚀 Designed to Scale Flexible architecture that grows with your business. Start simple, expand seamlessly. Core Features Your AI chatbot includes everything you need for customer support, lead generation, and engagement: ✅ Conversational Forms Your AI doesn’t just answer questions—it can run conversational forms when visitor intent matches your configuration: the chatbot collects standard fields through dialogue. You can also use widget forms—the type is chosen when you set up the form (conversational vs widget). Submissions are stored locally, and each new entry can be delivered by email or Slack. ✅ Quick 3-Step AI Chatbot Setup Guided wizard launches after activation. Connect your AI provider, configure personality, add knowledge sources, and customize appearance—live in under 5 minutes. ✅ Advanced AI Chatbot RAG Technology Train on unlimited WordPress content using Retrieval-Augmented Generation. Supports pages, posts, custom post types, PDFs, text files, rich text input, Q&A entries, and webpage content fetched from URLs. Intelligent intent recognition retrieves the most relevant knowledge for accurate responses. Auto-sync keeps WordPress knowledge sources (pages, posts, custom post types) automatically up to date—no manual re-training needed when content changes. Knowledge Filtering lets you accurately filter and view which sources are available in your knowledge base. AI Agent can also render images from learned sources (Beta) for richer, more visual responses. ✅ Transcripts View all chats, see which knowledge sources were used per reply, add missing Q&A entries, and review user context (guest/logged-in status and IP addresses). ✅ Cost-Optimized AI Usage Smart token management minimizes API charges. Intelligent request optimization ensures you pay only for what you need. Configure rate limits to control expenses. ✅ Streaming AI Responses Real-time word-by-word AI replies for faster, more natural conversations. Especially useful when short answers setting is disabled – long responses are printed naturally and quickly instead of making users wait for the full response to be ready. ✅ Customizable Chat Experience Unlimited widgets including Message Starters, Message Prompts, Chat History, Links, Lead Generation, and custom announcements. The Lead Generation widget collects user name and email before allowing conversation to start—so you know who is chatting and can follow up or add them to your leads list. Fully customizable greetings with emoji support. Simplified single-step widget publishing makes adding widgets effortless. ✅ Flexible Vector Storage Choose local WordPress database (free, unlimited) or Pinecone for enterprise-scale knowledge bases. Vector embeddings enable fast, contextually relevant retrieval. ✅ Complete Customization Customize colors, chatbot icon, AI avatar, chat box size, themes (light/dark/system), positioning, emojis, and greeting messages. Adapts seamlessly to all devices. ✅ Multi-Language Support Conversations in multiple languages with RTL compatibility. The AI chatbot responds in your visitors’ language. ✅ GDPR Compliant All conversation data stored locally on your WordPress site. You control data retention, export, and deletion policies. Supported AI Models Google Gemini – Gemini 3 Flash Preview – Gemini 3.1 Pro Preview – Gemini 3.1 Flash Lite Preview – Gemini Embedding 001 (for knowledge base) OpenAI GPT – GPT-5.5, GPT-5.4, GPT-5.4 Mini, GPT-5.4 Nano – GPT-5.2, GPT-5.1 – GPT-5 Mini, GPT-5 Nano – GPT-4.1, GPT-4.1 Mini, GPT-4.1 Nano – GPT-4o, GPT-4o Mini – GPT-4 Turbo, GPT-4 – Text Embedding 3 Small, Text Embedding 3 Large, Text Embedding ada 002 (for knowledge base) Claude (Anthropic) – Claude Opus 4.6, Claude Sonnet 4.6 – Claude Sonnet 4.5, Claude Haiku 4.5 – Claude Opus 4.5, Claude Opus 4.1 – Claude Sonnet 4.0, Claude Opus 4.0 DeepSeek – DeepSeek-V3.2 Chat Grok (X.AI) – Grok 4.20 (Reasoning), Grok 4.20 (Non Reasoning) – Grok 4.1 Fast (Reasoning), Grok 4.1 Fast (Non Reasoning) – Grok 4 Fast (Reasoning), Grok 4 Fast (Non Reasoning) – Grok 3 Mini, Grok 3 Mini Fast Open Router (200+ models via single API) – OpenAI: GPT-5.1, GPT-5 Pro, GPT-5, GPT-5 Mini, o3, o4 Mini, GPT-4.1, GPT-4o – Google: Gemini 3 Pro Preview, Gemini 2.5 Pro, Gemini 2.5 Flash – Anthropic: Claude Opus 4.6, Claude Sonnet 4.5, Claude Haiku 4.5, Claude Opus 4.1 – DeepSeek: DeepSeek V3.2, DeepSeek V3.1 Terminus, R1 – xAI: Grok 4.1 Fast, Grok 4 Fast, Grok 3 – Mistral: Mistral Large 3, Mistral Medium 3, Ministral 3, Devstral 2 – Amazon: Nova Premier 1.0, Nova Pro 1.0, Nova Lite 1.0 – Qwen: Qwen3 Max, Qwen3 235B, Qwen3 Next 80B – Meta: Llama 4 Maverick, Llama 4 Scout, Llama 3.3 70B Instruct – Plus Pony Alpha, MiniMax M2, Moonshot Kimi K2, Z.AI GLM 4.6, Cohere Command R, and 150+ more chat and embedding models Knowledge Sources Train your AI chatbot on multiple content types: WordPress Pages & Posts Custom Post Types PDF Documents Text Files (.txt) Rich Text Editor (unlimited input) Simple Q&A Entries Webpage URLs Sitemap Content is processed using vector embeddings and stored in your WordPress database or Pinecone for fast, contextually relevant retrieval. Use the Knowledge Filtering feature to accurately filter and view which sources are available in your knowledge base. Quick Setup Your AI chatbot launches in 3 simple steps: 1️⃣ Connect AI Provider – Enter your API key and configure AI agent personality 2️⃣ Appearance – Customize theme, colors, chatbot icon, and how the widget looks on your site 3️⃣ Add Knowledge – Import pages, posts, upload documents, or paste webpage URLs for RAG training Live in under 5 minutes with no technical knowledge required. External Services This plugin connects to third-party AI services to generate chatbot responses. For Limb AI, your live site registers with a site token (no third-party API key). For other providers, you must provide your own API keys and comply with each provider’s terms of service. AI Service Providers: Limb AI – Chat completions and embeddings via managed Limb AI credits API Endpoint: https://api.wpaichatbot.com Terms & Conditions Privacy Policy OpenAI – Chat completions, embeddings, image generation API Endpoint: https://api.openai.com Terms of Use Privacy Policy Google Gemini – Chat completions, embeddings, image generation API Endpoint: https://generativelanguage.googleapis.com Terms of Service Privacy Policy Pinecone (Optional) – Vector database for knowledge storage API Endpoint: https://api.pinecone.io Terms of Service Privacy Policy DeepSeek – Chat completions API Endpoint: https://api.deepseek.com Terms of Service Privacy Policy Claude (Anthropic) – Chat completions API Endpoint: https://api.anthropic.com Terms of Service Privacy Policy Grok (X.AI) – Chat completions API Endpoint: https://api.x.ai Terms of Service Privacy Policy Open Router (Optional) – Unified API for 200+ AI models (OpenAI, Google, Anthropic, DeepSeek, xAI, Mistral, Amazon, Qwen, Meta, and more) API Endpoint: https://openrouter.ai Terms of Service Privacy Policy You are responsible for: – Obtaining and managing your own API keys (when not using Limb AI) – Monitoring your API or Limb AI credit usage and costs – Complying with each service provider’s terms and policies – Ensuring your use case meets provider requirements Libraries & Credits Development Team: AI Chatbot is developed and maintained by the team at wpaichatbot.com. Support & Documentation Need Help? * 📚 Full Documentation * 💬 Community Forum * 🌐 Official Website * 📧 Email Support Privacy & Data Your Data, Your Control: – All chat conversations are stored locally in your WordPress database – No data is sent to external services except AI providers (Limb AI, OpenAI, Gemini, DeepSeek, Claude, Grok, or Open Router) for response generation – You have complete control over data retention and deletion policies – GDPR-compliant data handling with export and erasure capabilities – User data is handled according to WordPress privacy standards Upgrade to Pro ⭐ The Pro version includes advanced features: 💬 Native live agent – Hand off chats to your team through the WordPress-native live agent experience (mobile-optimized PWA) 🛒 WooCommerce integration – Shopping assistance, product recommendations, cart and order support tied to your store 🎨 White Label Branding – Custom logos and icons for chatbot and AI agent ⚡ Conversational Forms (Pro) – Attachment and date fields; custom webhooks; multiple notification destinations delivered together 🧩 Chatbot & Prompt Blocks – Gutenberg integration for inline chat and prompt inputs 🎯 Premium Widgets – Advanced UI components and interactive elements Learn more about Pro features

Add an AI chatbot that answers visitors from your own content — and admits when it doesn’t know. Rapls AI Chatbot searches your posts, pages, and knowledge base first, then replies in natural language, in the visitor’s own language. With Grounded Answers Only mode, if your content has no answer, the bot says so instead of making something up. You can be live in about five minutes, for free, with no credit card. On first setup a guided “Start for free” panel hands you a free key from OpenRouter or the Google Gemini free tier, tests it, auto-selects a working model, and switches the chatbot on — no AI or API experience needed. Watch the setup, start to finish: No monthly SaaS fee — and no runaway bill. It runs on your own API key with no markup, and built-in Usage Control caps daily usage per visitor, so you can open the bot to the public without worrying about your API spend. A Monthly Cost Guard lets you set a hard budget, and Model Fallback keeps the bot answering on a lightweight model when your main model hits its quota. Conversations and keys stay on your own server. Built for site owners, agencies, and developers who want control over the model, the data, and the cost. Connect OpenAI, Anthropic Claude, Google Gemini, or OpenRouter, or any OpenAI-compatible endpoint such as Alibaba Tongyi Qwen (DashScope) — useful where OpenAI and Gemini are hard to reach — and switch anytime. Why site owners pick Rapls Free to try, fast to launch. Guided onboarding gets you from install to a working chatbot in minutes, with a no-credit-card OpenRouter or Gemini key. Grounded answers, or an honest “I don’t know.” RAG hybrid search grounds replies in your actual posts, pages, and knowledge base — and Grounded Answers Only mode keeps the bot from inventing answers your site doesn’t contain. Your bill can’t run away. Self-hosted and BYOK with no markup, plus per-visitor daily caps (Usage Control) so public traffic can’t drain your API budget. Replies that don’t sound like a robot. An optional AI-smell score reviews the bot’s Japanese replies for machine-sounding wording, so you can tune the tone. (Detection only — replies are never altered.) No lock-in. Switch between OpenAI, Claude, Gemini, and OpenRouter whenever you want. Speaks your visitors’ language. Automatic multi-language replies, so one bot serves an international audience. What it does Bring your own key: OpenAI, Anthropic Claude, Google Gemini, OpenRouter, or any OpenAI-compatible endpoint (Alibaba Qwen/DashScope, DeepSeek, Zhipu), switchable per site. Site learning: indexes your posts and pages so the bot answers from your content. Knowledge base: add Q&A or upload PDF/DOCX files, with priority over general answers. RAG hybrid search: combines keyword and semantic retrieval for grounded replies. Grounded Answers Only: an optional mode that makes the bot reply “I couldn’t find that” instead of inventing an answer your content doesn’t support. Web search: lets the bot pull current information when configured. MCP tools: exposes 5 Model Context Protocol tools, so agents such as Claude or ChatGPT can read and act on your site through conversation. Usage dashboard: tracks conversations, messages, and API cost. Usage Control: optional per-visitor daily caps so public traffic can’t run up your API bill. Unanswered Questions: records what the bot could not answer, with one-click “Add to knowledge” and an AI-drafted FAQ page. AI-smell score: an optional read-only score that flags machine-sounding wording in Japanese replies (detection only — replies are never altered). Industry starter templates: one click applies a ready-made system prompt and preset questions for hotels, shops, clinics, professional services, or company sites. Gutenberg block: drop the chatbot into any page or post. Deep-link auto-send: a ?raplsaich_q= URL opens the chatbot and sends the question automatically, so end-of-article “suggested questions” become one-click conversations. Turns visitor questions into content The bot doesn’t just answer — it tells you what your site is missing. Questions it could not answer from your content are recorded on the dashboard, one click turns them into a knowledge entry, and another click drafts an FAQ page from the last 30 days of real visitor questions. Answer gaps become content, content improves the bot, and the same pages work for SEO and AI search (LLMO). Self-hosted and private Conversations and keys stay on your own WordPress install. You are billed by your AI provider directly, so cost is transparent and there is no markup. Visitors can delete their own chat history from the widget (optional), and retention is configurable — GDPR-friendly by design. Free and Pro Free — not a trial. The free version is the full product: chatbot, site learning, knowledge base, RAG hybrid search, Grounded Answers Only, MCP server (5 tools), a usage dashboard (conversations, messages, and cost), and per-visitor daily caps. Run it forever at no cost on a free-tier key. Pro — for sites that run the bot as a business tool: Lead capture automation — collect contacts from conversations, with Google Sheets and Slack sync. Analytics — conversation, cost, and quality metrics at a glance. Usage Control suite — role-based limits, per-user monthly credits with auto-reset, and a usage-control dashboard to grant and track credits, so members and guests each get a fair share of your API budget. Extra MCP tools — product-search and analytics tools for AI agents, on top of the five in Free. Context & embedding controls — reprocess embeddings and shape the context retrieved for each reply. LINE integration (add-on) — connect the chatbot to LINE messaging, the dominant messenger in Japan. Up and running in about 5 minutes (free, no credit card) You do not need an API key or any AI experience to start. On first setup the plugin shows a “Start for free” panel with two no-credit-card paths: an OpenRouter free key or a Google Gemini free-tier key. Pick OpenRouter or Gemini. Click through to get a free key (about a minute) and paste it in. Press Test Connection — the key is validated and saved, a working free model is auto-selected, and the chatbot is switched on. That’s it. Each option states its data-handling trade-off up front (the Gemini free tier may use submitted content to improve Google’s models), so you choose with eyes open. You can switch to your own OpenAI, Claude, or Gemini key at any time. Learn more: Plugin details | Source code (GitHub) See it in action Watch the full setup — from install to first reply — in about 5 minutes, no credit card required: See it answer from your own content, and how that differs from plain ChatGPT: External Services This plugin connects to the following external third-party services. No data is sent to any service until you configure an API key and enable the feature in the plugin settings. Each service requires the site administrator to create an account and obtain API credentials. By using these services, you agree to their respective terms and privacy policies listed below. 1. OpenAI (GPT models): AI Provider Used when you select OpenAI as your AI provider. User messages and optionally site content are sent to generate AI responses. Service URL: https://api.openai.com/ Terms of Use: https://openai.com/terms/ Privacy Policy: https://openai.com/privacy/ 2. Anthropic (Claude models): AI Provider Used when you select Anthropic Claude as your AI provider. User messages and optionally site content are sent to generate AI responses. Service URL: https://api.anthropic.com/ Terms of Use: https://www.anthropic.com/terms Privacy Policy: https://www.anthropic.com/privacy 3. Google (Gemini models): AI Provider Used when you select Google Gemini as your AI provider. User messages and optionally site content are sent to generate AI responses. Service URL: https://generativelanguage.googleapis.com/ Terms of Use: https://policies.google.com/terms Privacy Policy: https://policies.google.com/privacy 4. OpenRouter: AI Provider Used when you select OpenRouter as your AI provider. OpenRouter is a unified API gateway that routes requests to various AI models. Service URL: https://openrouter.ai/api/ Terms of Use: https://openrouter.ai/terms Privacy Policy: https://openrouter.ai/privacy 5. OpenAI-compatible endpoints (e.g. Alibaba Qwen/DashScope, DeepSeek, Zhipu): AI Provider Used only if you select the “OpenAI-compatible” provider and enter a base URL. User messages, and optionally your site content (including indexed content for RAG embeddings), are sent to the endpoint you configure to generate responses or embeddings. Because the endpoint is chosen by you, please review the terms and privacy policy of the specific provider you connect to. For example, Alibaba Cloud Model Studio (DashScope), which powers Tongyi Qwen: Service URL: https://www.alibabacloud.com/help/en/model-studio/ Terms of Use: https://www.alibabacloud.com/help/en/legal/ Privacy Policy: https://www.alibabacloud.com/help/en/legal/latest/alibaba-cloud-privacy-policy/ 6. Google reCAPTCHA v3 (Optional) Used only if you enable reCAPTCHA in the plugin settings for spam protection. The visitor’s IP address and interaction data are sent to Google for verification. Service URL: https://www.google.com/recaptcha/ Terms of Use: https://policies.google.com/terms Privacy Policy: https://policies.google.com/privacy 7. LINE Messaging API (Pro Add-on, Optional) Used only if you enable the LINE integration via the Pro add-on. Connects to the LINE Messaging API for chatbot-to-LINE messaging. Service URL: https://api.line.me/ Terms of Use: https://terms.line.me/ Privacy Policy: https://line.me/en/terms/policy/ Cross-Site Embed The plugin includes an optional embed loader script (embed-loader.js) for embedding the chatbot on external websites via an iframe. This script does not load any external CDN resources or third-party scripts. It creates an iframe pointing back to your own WordPress site, and all data processing occurs on your server. Data Transmitted to External Services User messages: Chat messages entered by visitors (sent to the configured AI provider only) Site content (if Site Learning is enabled): Excerpts from your published posts/pages (sent to the configured AI provider) Knowledge base (if configured): Custom Q&A entries you create (sent to the configured AI provider) IP address (reCAPTCHA only): Sent to Google for spam verification Data Storage Conversation history: Stored locally in your WordPress database (can be disabled) Visitor IP: Stored as SHA-256 hash (not plain text) for rate limiting Retention: Configurable auto-deletion period (default 90 days) User Controls You can disable these features in the plugin settings: * Conversation history saving * Site content crawling/learning * Google reCAPTCHA verification * Web search