Original articles
Treat your AI API keys like company cards
In my view, small and mid-sized businesses should manage AI API keys as spending authorities, not merely technical credentials. Separate keys, meaningful spending controls, secure storage and a named billing owner make AI spending easier to oversee without creating unnecessary bureaucracy.
An AI API key is not just a password. It can authorize requests that cost your business money. In my view, owners and managers should therefore treat it like a company card: give it a defined purpose, control its use and make someone responsible for reviewing the charges.
A key does not need to unlock your bank account to create a financial problem. Someone who obtains a working credential may be able to charge AI usage to your account, within its permissions and controls. I believe that makes key management a basic financial responsibility, not a technical detail to leave unattended after setup.
Start by giving each application or team its own key. Sharing one credential across the business may seem convenient, but it makes responsibility harder to untangle. Separate keys make it easier to identify usage and revoke one application's access without interrupting everything else. Where permissions can be restricted, I would grant only what that application needs.
Set spending limits and billing alerts on every AI account. Check what those controls actually do: an alert tells you something happened; it does not necessarily stop spending. A budget setting may not be a hard cap either. My preference is an enforceable limit wherever available, with alerts early enough for someone to act before the budget is exhausted.
Keep keys out of code, shared documents and chat. Use a secrets manager or another protected credential store, and give access only to people and systems that need it. I would also make key removal part of retiring an application or changing a team's responsibilities. Delete unused keys and rotate active ones on a documented schedule, checking that replacement credentials work before withdrawing the old ones.
Most importantly, name one person who reviews the AI bill each month and knows how to revoke a key quickly. That person needs access, clear authority and a backup when absent. An unexplained charge should lead to a straightforward check of which application used what, not a search for whoever originally opened the account.
Devmojos helps businesses adopt AI. I believe adoption should include these ordinary spending disciplines from the start. The aim is not to make AI feel dangerous or bury a small business in approvals. It is to keep useful tools useful—and keep permission to spend company money accountable.