Holy Grail Chatbot
Smart AI chat assistant for WordPress: adds the Holy Grail chatbot and keeps its knowledge in sync as you edit content - set up in minutes.
Will this break my store?
What the WordPress.org registry says about keeping Holy Grail Chatbot running.
Tested to 7.1.3
Tested against the WordPress branch in use today.1 month ago
8.0
Your host must be running at least this version.5.9
1
A single maintainer. Worth knowing if the plugin is load-bearing for your store.Maintenance & trust
Scored on how Holy Grail Chatbot is looked after — not on how many stores run it.
Maintenance
35 / 35WordPress compatibility
20 / 20Support responsiveness
Not enough dataMerchant satisfaction
Not enough dataListing transparency
10 / 10Ratings
No one has rated this plugin on WordPress.org yet. That is a statement about the ratings page, not about the plugin — plenty of well-kept plugins never collect them.
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-Keyheader; 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.appand 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_updatedordelete) — no post content and no user data. When you configure an Authorization Token, it is sent with the request as anX-Team-Api-Keyheader 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.
Yes. The chatbot and webhook sync both require a Holy Grail AI account. You can sign up at my.holygrail.app.
Any public post type — posts, pages, WooCommerce products, or custom post types. You pick which ones in the settings. Revisions and autosaves are always ignored.
No. The chatbot script loads asynchronously from a CDN. Webhooks fire server-side on the shutdown hook, after WordPress has already sent the page to the visitor.
Yes. The plugin auto-detects your multilingual setup and lets you assign per-language Agent IDs. Webhook URLs resolve in each post’s language, not the admin panel’s language.
Yes. There’s a visibility setting in the admin panel. You can also use the holy_grail_chatbot_user_authenticated filter for custom logic.
Enable Debug Logging in the settings. Every webhook request and response gets logged with status codes and payloads. Use the filters to narrow down specific operations, then clear the log when you’re done.
The plugin batches the URLs and sends them in a single request (up to 100 URLs per chunk) instead of firing one webhook per post.
Categories
Plugin details
Tags on WordPress.org
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