curl "https://client.tukanmx.com/tukan-atlas/institution-entities/?search=oxxo" \
  -H "Authorization: Token $API_TUKAN"

import os
import requests

headers = {"Authorization": f"Token {os.environ['API_TUKAN']}"}

resp = requests.get(
    "https://client.tukanmx.com/tukan-atlas/institution-entities/",
    headers=headers,
    params={"search": "oxxo"},
)
resp.raise_for_status()
for inst in resp.json()["results"]:
    print(inst["id"], inst["name"])

{
  "count": 1,
  "page": 1,
  "page_size": 100,
  "results": [
    {
      "id": "CCO8605231N4.MX",
      "name": "Cadena Comercial OXXO",
      "name_en": "Cadena Comercial OXXO",
      "legal_name": "Cadena Comercial OXXO, S.A. de C.V."
    }
  ]
}