Term

Google's Query Suggest API

Some things (!) by Google are undocumented. Well, that's one of them :-)

Questions

What is Google's Query Suggest API

Google's Query Suggest API is an internal, undocumented API used by Google to provide autocomplete suggestions when users type search queries into the search bar. It is what powers the Google Autocomplete feature in Google Search, Google Chrome, and other Google products.

How Google's Query Suggest API work?
When a user starts typing a search query, Google's Query Suggest API returns a list of predicted search terms based on:

Popular searches related to the typed query

Search trends based on real-time data

User’s previous searches (if signed in)

Geographical location (if enabled)
How can I access Google's Query Suggest API?
Though Google does not officially document or provide public access to the API, developers have found that it can be accessed via the following endpoint:



https://suggestqueries.google.com/complete/search?client=firefox&q=your_query



Replace your_query with the term you want suggestions for.



The client=firefox parameter is often used because it was historically required to get JSON-formatted results.



Example Response

If you query:



https://suggestqueries.google.com/complete/search?client=firefox&q=apple



The response is typically in JSON format:



["apple", ["apple store", "apple watch", "apple id", "apple music", "apple stock"]]



This means that Google suggests:



"apple store"

"apple watch"

"apple id"

"apple music"

"apple stock"
Known limitations
As an unofficial API call, it comes with some limitations



Unofficial API: Google can change or block access at any time.

Rate Limits: Excessive requests might get blocked.

No Official Documentation provided: No support or guarantees of stability.
How Google's Query Suggest API
When a user starts typing a search query, Google's Query Suggest API returns a list of predicted search terms based on:
Popular searches related to the typed query
Search trends based on real-time data
User’s previous searches (if signed in)
Geographical location (if enabled)
How can I access Google's Query Suggest API
Though Google does not officially document or provide public access to the API, developers have found that it can be accessed via the following endpoint:

https://suggestqueries.google.com/complete/search?client=firefox&q=your_query

Replace your_query with the term you want suggestions for.

The client=firefox parameter is often used because it was historically required to get JSON-formatted results.

Example Response
If you query:

https://suggestqueries.google.com/complete/search?client=firefox&q=apple

The response is typically in JSON format:

["apple", ["apple store", "apple watch", "apple id", "apple music", "apple stock"]]

This means that Google suggests:

"apple store"
"apple watch"
"apple id"
"apple music"
"apple stock"