Foursquare API Venues/Explore Radius and Limit Parameter issue

Question

I'm having issues with venues/explore? results.

I'm exploring some neighborhoods in Seattle. In some requests the API is returning as much as 30 venues when parameters are set to LIMIT=10 and the RADIUS=500.

I understand the ultimately this results are a no brainer for what I'm trying to achieve. I just wanna make sure I'm using the API properly.

i.e. It looks like the API is not respecting the set limit used in the parameter.

What am I doing wrong?!

Below are the parameters and request:

CLIENT_SECRET=
CLIENT_ID=
VERSION = '20180604'
RADIUS = 500
LIMIT = 10


x_lat = str(fs_coord_df.loc[0,'Latitude'])
x_lng = str(fs_coord_df.loc[0, 'Longitude'])

url = 'https://api.foursquare.com/v2/venues/explore?client_id={}&client_secret={}&v={}&radius={}&limit{}&ll={},{}'.format(CLIENT_ID, CLIENT_SECRET, VERSION, RADIUS, LIMIT, x_lat,x_lng)

request = requests.get(url).json()

print(len(request['response']['groups'][0]['items']))
print(request['response']['groups'][0]['items'])

Thanks in advance.