opensolr

Opensolr Search replaces WordPress’s default search with a powerful, hosted Apache Solr search engine. It combines traditional keyword search with AI-powered vector search for dramatically better relevance.
Key Features:
<ul>
<li>Hybrid Search — combines keyword matching (BM25) with semantic vector search (1024-dim embeddings) for the best of both worlds</li>
<li>Faceted Navigation — filter results by category, price range, date, custom fields, and hierarchical taxonomies</li>
<li>AI Hints — streaming AI-generated answers above search results, powered by RAG</li>
<li>AI Reader — full-screen AI summary of any search result</li>
<li>Autocomplete — real-time search suggestions with query history and Solr results</li>
<li>WooCommerce Support — index products with prices, categories, SKUs, and structured data</li>
<li>Two Indexing Methods — Web Crawler (automatic) and Data Ingestion API (push from WordPress)</li>
<li>Search Analytics — track queries, clicks, CTR, no-results queries, and visitor patterns</li>
<li>Query Elevation — pin or exclude specific results for any query</li>
<li>Persistent Filters — admin-defined include/exclude filters applied to every search</li>
<li>Multilingual — automatic locale filtering for WPML and Polylang sites</li>
<li>Dark Theme — built-in dark mode for the search page</li>
<li>Embeddable — use native search or embed the Opensolr hosted search widget</li>
</ul>
How It Works:
<ol>
<li>Sign up at <a href="https://opensolr.com" rel="nofollow ugc">opensolr.com</a> and get your API key</li>
<li>Install the plugin and enter your credentials</li>
<li>Create a search index or connect to an existing one</li>
<li>Configure your sitemap and start the web crawler</li>
<li>Your search page is live at <code>/opensolr-search</code></li>
</ol>
The plugin generates a complete sitemap, injects meta tags for the crawler to extract, and provides a full search experience with zero load on your WordPress server — all search queries go directly to the Opensolr cloud.
Requirements:
<ul>
<li>An Opensolr account (free tier available)</li>
<li>PHP 8.1 or higher</li>
<li>WordPress 6.0 or higher</li>
</ul>
<h3>External services</h3>
This plugin depends on several online services operated by Opensolr (<a href="https://opensolr.com" rel="nofollow ugc">https://opensolr.com</a>) to provide hosted search. You must have an Opensolr account; all indexing and search queries flow through these services. The service is required for core plugin functionality and cannot be self-hosted.
Service provider
<ul>
<li>Opensolr — hosted Solr search cloud and AI API</li>
<li>Privacy policy: <a href="https://opensolr.com/learn/privacy-policy" rel="nofollow ugc">https://opensolr.com/learn/privacy-policy</a></li>
<li>Terms of service: <a href="https://opensolr.com/learn/terms-of-service" rel="nofollow ugc">https://opensolr.com/learn/terms-of-service</a></li>
<li>Account signup (free tier available): <a href="https://opensolr.com/register" rel="nofollow ugc">https://opensolr.com/register</a></li>
</ul>
Endpoints the plugin contacts
<ul>
<li><code>https://opensolr.com/solr_manager/api/*</code> — account management, index create/reload, config upload, sitemap registration, elevation toggle, crawl start/stop/stats. Called from WordPress admin (not from visitors’ browsers).</li>
<li><code>https://api.opensolr.com/solr_manager/api/ingest</code> — Data Ingestion API: pushes your post content + metadata to the search index. Called from the WordPress site (cron worker and the real-time sync on post save/delete), never from visitors.</li>
<li><code>https://api.opensolr.com/solr_manager/api/embed</code> — generates a 1024-dim semantic embedding for the current search query (AI/hybrid search path only). Called from the WordPress site on every AI/hybrid search.</li>
<li><code>https://api.opensolr.com/solr_manager/api/ai_summary</code> — streams the AI Hints / AI Reader answer. Called from the WordPress site only when the admin has enabled those features.</li>
<li><code>https://<your-solr-host>.solrcluster.com/solr/<your-index>/select</code> — the Solr search request itself (host provided by Opensolr when you create an index). Called from the WordPress site on every search.</li>
<li><code>https://search.opensolr.com/embed.js</code> — loaded ONLY if the admin switches Search Mode to “Embeddable”. In Native mode (the default), this script is never loaded.</li>
</ul>
Data sent to these services
<ul>
<li>Your Opensolr email + API key (authentication).</li>
<li>Your site’s host name (<code>meta_domain</code>).</li>
<li>For ingestion: post titles, content, URL, excerpt, author display name, taxonomy terms, publish dates, WooCommerce price + category + SKU, featured-image URL. Only for the post types you explicitly enable in the plugin settings. Never includes user login data, email addresses, or passwords.</li>
<li>For search: the search query string, the active facet filters, pagination position.</li>
<li>For AI features (when enabled): the search query plus the top 4 result snippets, so the AI can compose an answer from your own content.</li>
<li>For click tracking (when enabled): the clicked result URL, title, position, the search query, and a SHA-256 hash of the visitor’s IP (never the raw IP). Analytics can be disabled from the plugin’s Search Display settings.</li>
</ul>
No data is shared with any third party — all traffic goes only to <code>opensolr.com</code> / <code>api.opensolr.com</code> / <code>*.solrcluster.com</code> (and only to <code>search.opensolr.com</code> if you explicitly enable Embeddable mode).

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