Holy Grail Chatbot adds a smart, conversational AI assistant to your WordPress site and keeps its knowledge in sync as your content changes — without touching your theme.

Connect your site to the Holy Grail platform by entering your Agent-ID, and the chatbot is injected on the front end automatically. Whenever you create, update, or delete a monitored post, page, or product, the plugin sends a webhook to Holy Grail so the matching page is re-crawled and your assistant answers with your latest content.

What you get

Setup in minutes. Paste your Agent-ID, save, done — the chatbot appears on your site.
Talks like a human. Powered by leading LLMs, trained on your content in the Holy Grail platform.
Real-time knowledge sync. Every create/update/delete on a monitored post type fires a webhook so Holy Grail re-crawls just that page. No more stale replies.
You choose what syncs. Select exactly which public post types (posts, pages, products, custom types) trigger a webhook.
Production and Staging. Switch the whole integration between your live and test Holy Grail environments with one setting.
Visibility control. Show the chatbot to all visitors, or restrict it to logged-in users only.
Multilingual ready. Assign a different Holy Grail agent per language on WPML, Polylang, or TranslatePress sites.
Secure by design. Requests are authenticated with an X-Team-Api-Key header; API keys are masked in the debug log.
Built-in debug log. Capture webhook requests/responses in a filterable, paginated log, then clear it in one click.

Product recommendations

If your site exposes product data, the assistant can recommend the right items as a visual product slider inside the conversation — with image, title, and price — helping reduce cart abandonment and lift conversions. Select the product post type to keep it in sync.

Use cases

E-commerce stores: AI shopping assistant that recommends products from your synced catalog and guides shoppers to checkout.
Service businesses: Answers FAQs and qualifies leads while you focus on the work.
Membership sites: Guides members to the right content, courses, or resources based on what they ask.

External service

This plugin relies on Holy Grail, a third-party AI service, and will not function without a Holy Grail account. Two kinds of communication take place:

Chatbot widget. When an Agent-ID is configured, the chatbot script is loaded on your front end from static.holygrail.app and the conversation runs against the Holy Grail service. Visitor messages typed into the chatbot are sent to Holy Grail to generate a reply. No chatbot script is loaded and no data is sent when no Agent-ID is set.
Content sync. When a Webhook Endpoint is configured, the plugin sends the public URL of a post, page, or product to Holy Grail whenever you create, update, or delete one of the post types you selected, so that Holy Grail can re-crawl that page. The request body contains the page URL and the action (created_or_updated or delete) — no post content and no user data. When you configure an Authorization Token, it is sent with the request as an X-Team-Api-Key header so Holy Grail can identify your account. No webhook is sent when no endpoint is configured.

Requests are sent to the environment you select in the settings: my.holygrail.app (Production) or staging.my.holygrail.app (Staging).

By using this plugin you are subject to Holy Grail’s Terms of Service and Privacy Policy.

Requirements

You’ll need a Holy Grail account. Create one for free — setup takes about 5 minutes. Your Agent-ID, Webhook Endpoint, and Authorization Token are all in your Holy Grail dashboard.