Search Autocomplete

Search autocomplete (also called typeahead or suggestions) returns suggested search terms, locations, or matching records as a user types. It reduces keystrokes needed to reach the right query and improves accuracy by guiding users toward valid inputs before they finish typing.

In property and e-commerce APIs, dedicated autocomplete endpoints are designed for keystroke-by-keystroke querying - returning fast, lightweight suggestions optimized for low latency. A location autocomplete endpoint for property search might return matching cities, neighborhoods, and postal codes as the user types.

Implementing autocomplete correctly requires calling the API with a short debounce (100-300ms after the last keystroke). The response should arrive in under 200ms to feel instantaneous. Most autocomplete endpoints are read-only GET requests optimized for this latency profile.