Get token for ArcGIS REST API, for addFeatures, applyEdits, etc.

arcgis_oauth.py

from urllib.parse import urlencode
import requests
from flask import Flask, request

# fill in the client id
client_id = 'client_id'

redirect_uri = 'https://localhost:1111'
port = 1111

params = urlencode({
    'client_id': client_id,
    'response_type': 'code',
    'redirect_uri': redirect_uri
})

# fill in your portal url
authorize_url = 'https://your-portal.com/sharing/rest/oauth2/authorize?' + params
print('Go to this link in your browser')
print(authorize_url)

token_url = "https://your-portal.com/sharing/rest/oauth2/token"

app = Flask(__name__)

@app.route("/")
def callback():
    code = request.args.get("code")
    if code:
        token_params = {
            "grant_type": "authorization_code",
            "code": code,
            "client_id": client_id,
            "redirect_uri": redirect_uri,
        }
        response = requests.post(token_url, data=token_params)
        if response.status_code == 200:
            j = response.json()
            access_token = j.get("access_token")
            if access_token is not None:
                print(f"Access token: {access_token}")
                return "Authentication successful. You can close this window."
            else:
                print(j)
            return "Error getting access token."
        else:
            print(f"Access token request failed: {response.text}")
            return "Access token request failed."
    else:
        return "No code received."

if __name__ == "__main__":
    app.run(host="localhost", port=port, ssl_context="adhoc")