Hi Simon,
There shouldn't be too many issues when applying for a developerToken and getting basic access granted. You could follow the easy steps from our
sign up guide and fill out this basic access
application form once you have created your MCC. The AdWords Compliance Team should then get in touch with you within 2 business days for the status. Should it take longer than the mentioned period, let me know so I can notify their team about your application.
Additionally, since you wish to use the AdWords API to create a bid management tool, you will also need to generate your
OAuth2 credentials to access and modify information of your AdWords production account(s). You'll then need to download the
client library of your choice. Once your setup has been completed and basic access has been granted, you could then proceed making calls to your production account(s).
As for the bidding part, you may refer to our
bidding guide for more information regarding its implementation. I hope this has been helpful and feel free to write back should you require further information.
Best regards,
Peter
AdWords API Team