Manage API credentials through their complete lifecycle

A working integration can depend on a credential that nobody owns. Replacing it becomes risky, and discovering exposure creates uncertainty about which systems to stop. Credential management should cover the complete lifecycle, not end when a developer copies a key into a configuration screen.

Issue access for a defined purpose

Recommend separate credentials for each integration and environment where the provider supports them. Record the owner, business purpose, provider account, permission scope, and consumers. Keep the inventory separate from the secret value. Avoid tying unattended business access to an individual employee’s personal account.

OWASP requires endpoint access control for nonpublic REST services and warns against relying exclusively on API keys for sensitive, critical, or high-value resources.[7] Choose the provider’s appropriate authentication mechanism. Then limit permissions to the operations and resources the integration needs, rather than treating possession of a key as unlimited authority.

Protect use and observability

OWASP advises keeping passwords, tokens, and API keys out of URLs because URLs can appear in server logs.[7] Follow the provider’s documented credential transport, normally through an appropriate authorization header or supported mechanism. Do not invent an alternative that the provider does not support.

Recommend a controlled secret store and workload-based access where available. Prevent secret values from entering source control, build output, tickets, or ordinary logs. Give operators safe metadata such as a credential identifier and last successful use. Test redaction in failure paths, since request dumps and exception reports can bypass normal logging discipline.

Make replacement and removal routine

Plan rotation before the credential becomes urgent to replace. If the provider allows overlap, introduce the replacement, verify consumers, and revoke the old credential. If overlap is unavailable, prepare a coordinated transition and a visible interruption plan. Never assume removing a local copy revokes remote access.

• Assign a current owner and review the required permission scope.
• Inventory every workload that uses the credential without storing its value there.
• Test replacement, revocation, and the resulting authentication alerts.
• Define emergency containment and evidence preservation for suspected exposure.

Hypothetical example: an address verification service

Hypothetical example: a fulfillment application uses an address verification provider. Its dedicated credential can verify addresses but cannot administer the provider account. A replacement is loaded into the application, tested with an approved request, and observed before the old key is revoked.

The team then confirms that the retired key no longer works. This requires provider support and careful handling of test evidence so no secret appears in a report. The next action is to choose one live integration, identify its credential owner, and rehearse replacement without waiting for an incident.