An example python script for how you can get data https://api.datadeelmobiliteit.nl/vehicles and filter out all data outside of a GeoJSON file.

main.py

import requests
import json
from shapely.geometry import shape, Point

# Step 1: Load Zwolle boundary GeoJSON manually
with open("zwolle.geojson") as f:
    geojson = json.load(f)

# Assuming the first feature contains the polygon
zwolle_polygon = shape(geojson['features'][0]['geometry'])

# Step 2: Fetch vehicle data from the API
url = "https://api.datadeelmobiliteit.nl/vehicles"  # Replace with actual URL
response = requests.get(url)
data = response.json()

vehicles = data['data']['vehicles']

# Step 3: Filter vehicles within Zwolle
vehicles_in_zwolle = []
for v in vehicles:
    point = Point(v['lon'], v['lat'])
    if zwolle_polygon.contains(point):
        vehicles_in_zwolle.append(v)

# Step 4: Print filtered vehicles
print(json.dumps(vehicles_in_zwolle, indent=2))

requirements.txt

requests==2.32.2
shapely==2.1.0

zwolle.geojson