# Let's Meet

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

**Year**  
2025

**Location**  
Remote

**Company Size**  
Small team

### 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](/content/blog/how-indexfox-built-an-ai-site-search-widget-on-manticore/index.html).