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
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 AUTOCOMPLETEwith 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 .