If the result count as a combined work that requires copyright permission (ie, copyright law), then you must have a license. The question about linking is always about this question.
If you are creating a combined work, AGPL would then provide permission under the condition that all users interacting with it are given an opportunity to receive the source code.
If you are creating a combined work, AGPL would then provide permission under the condition that all users interacting with it are given an opportunity to receive the source code.