Question 410
A team is evaluating a Claude-based payroll agent before it is allowed to issue external write-tool calls. Which THREE tests provide meaningful evidence of tool-use reliability and authorized behavior? (Select THREE.)
Explanation
Correct Answers
Permission boundaries need tests that submit realistic, including adversarial, target identifiers and destinations. A read-only employee or a wrong-tenant account must not be able to trigger a payroll mutation merely because the model writes convincing arguments. The evaluator should observe whether the host blocks the call before execution and whether the audit record accurately reflects the denied action. This tests the authorization mechanism directly, not just how politely the assistant explains a rejected request. Include revoked permissions and cross-tenant identifiers among the negative cases.
An agent may appear correct in normal tool flows while failing when the provider times out after a possible commit, returns a denial, or emits a duplicated result. Fault injection exposes whether tool-use IDs remain correlated and whether the host treats an uncertain write as incomplete instead of automatically repeating it. The test should inspect actual observed provider outcomes, retries and final user-facing status. These exercises distinguish a robust execution loop from a model that narrates success without real evidence.
Independent expected outcomes prevent the evaluation from accepting the model’s own preferred key or final narrative as the standard of correctness. Define the user authority, allowed records, required predicates and expected failure states before assessing each run. Then compare executed operations, tool-result identifiers, actual side effects and denial receipts to that reference. This provides a falsifiable judgment about both safe and unsafe cases rather than simply rewarding a completed-looking answer or the absence of an exception.
Incorrect Answers
Longer text does not establish that payroll authorization checks ran or that an external transaction was permitted. A model can produce a persuasive explanation even when no tool was executed or when the requested destination belongs to another employee. The evaluation must inspect the real tool action, permission decision and provider receipt. Counting explanation length only measures presentation and cannot verify the consequential boundaries that the scenario requires before production use.
A string hash can detect identical rendered responses but says nothing about which authorization rules or failure states were exercised. Many paraphrased outputs can all omit the same critical tool boundary, while a single case can represent a unique dangerous execution path. The evaluator should index tests by intended mechanism and observable outcome instead of counting superficial text variants. Distinct wording is not evidence of distinct functional coverage or of safe payroll writes.
Changing the company name is useful for checking that the workflow does not depend on one organization label, but it does not create a new security scenario by itself. If the target permissions and execution failure remain identical, the additional tests may simply repeat one decision. The test suite should vary actual authorization, tool behavior, result correlation and recovery conditions to cover distinct risks. Cosmetic contextual variation cannot substitute for those mechanistic distinctions.



Claude Certified Architect - Foundations (CCA-F) Practice Tests