Security decisions become easier to test when they are part of the interface design. These guides cover the exposed route inventory, accepted request contracts, resource relationships, and the division of responsibility between gateway and application. Read them while designing a new endpoint or changing an existing permission model. Write down what the service accepts, what it rejects, and where each rule is enforced. Keep background execution and older versions in view so a carefully designed public route is not undermined by a less visible path.
Prevent BOLA in multi-tenant APIs: authorize the object, not just the route
Turn tenant boundaries into explicit resource checks, negative tests, and safer background-job behavior.
API firewall vs WAF: choose the right control for the request
Understand where request filtering helps, what belongs in application authorization, and how to evaluate a layered deployment.
API security checklist: build a stronger first line of defense
A practical path from endpoint inventory to access controls, resource limits, and a release process your team can repeat.