# Indexfox is an AI site-search widget that any website can drop in with a single script tag

Indexfox provides an AI-powered site-search widget that crawls a customer's website automatically and serves hybrid keyword + semantic search with direct AI answers. Built for any team that wants better on-site search without running their own search infrastructure.

### Company

[Indexfox](https://indexfox.ai) is a hosted AI site-search widget that any website can install with a single `<script>` tag. The widget crawls the customer's site automatically, indexes every page, and replaces the usual on-site search box with one that returns both a ranked list of pages and a direct AI answer with source links. The product is built around a two-minute setup story: drop the snippet into the page `<head>`, point Indexfox at the domain, and the search experience improves without a back-end project.

### Challenge

Indexfox needed an engine that could combine full-text and vector search in the same query, isolate each customer's data without per-tenant infrastructure, and survive the constant re-indexing that comes with a crawler that keeps content fresh. Running a traditional full-text engine alongside a separate vector database doubled the operational surface and the cost — a non-starter for a small team supporting many sites.

### Solutions and results
* By adopting Manticore Search, Indexfox runs full-text MATCH queries and KNN vector search over the same HNSW-indexed tables, with no second datastore to keep in sync.
* Per-tenant isolation is implemented as per-website Manticore tables — adding or removing a customer is a `CREATE TABLE` / `DROP TABLE`, not an infrastructure change.
* Keyword and semantic results are merged with Reciprocal Rank Fusion, so short keyword queries still hit on exact terms while natural-language questions land via the vector path — both ranked together.
* Manticore's `CALL AUTOCOMPLETE` with bigram support powers the as-you-type suggestions that ship inside the widget, returning sub-millisecond results from a sentence-level index.

Read more in our [blog](/blog/how-indexfox-built-an-ai-site-search-widget-on-manticore/).
