Update Adset Bids - https://mirigrowth.com/blog/automation-facebook-marketing-api-scripts

update-bids.py

# Update Adset Bids

import requests
import json
import time

# Update with your Facebook Ad Account ID and Access Token
access_token = ''

# Update with a list of IDs, bids, and bid type to update
# Note: bid types can be event or minroas
# Note: event bids are multipled by 100 e.g $100 should be 10000 via the API
# Note: minroas bids are multiplied by 10000 e.g 0.010 should be 100 via the API
to_update = [
    { 
        'id': '',
        'bid': '',
        'type': ''
    }
]

for update in to_update:
    time.sleep(0.5)
    if update['type'] == 'event':
        data_dump = {
            'bid_amount': update['bid'],
            'access_token': access_token
        }
    elif update['type'] == 'minroas':
        data_dump = {
            "bid_constraints": json.dumps({"roas_average_floor":  update['bid']}),
            'access_token': access_token
        }
    else:
        data_dump = {}
        print('Bid Type is missing.')
    r = requests.post('https://graph.facebook.com/v4.0/' + update['id'], data=data_dump)
    result = r.json()
    if 'success' in result:
        print('Successfully updated ID: ' + update['id'])
    else:
        print('Error updating ID: ' + update['id'] + ', Error: ' + result['error']['message'])