CCARF Practice Question

Paper 5 · Question 15

D3 Claude Code Configuration & Workflows · Paper 5

[Scenario: Claude Code for Continuous Integration] Your CI/CD system runs three Claude-based analyses: (1) fast style checks on every PR that block merging until completion, (2) comprehensive weekly security audits of the entire codebase, and (3) nightly test-case generation for recently changed modules. The Message Batches API offers 50% savings but processing can take up to 24 hours. You want to optimize API cost while maintaining an acceptable developer experience. Which combination correctly matches each task to an API approach? Which combination is correct?

• A.Use the Message Batches API for all three tasks to maximize 50% savings, configuring the pipeline to poll for batch completion.
• B.Use synchronous calls for PR style checks; use the Message Batches API for weekly security audits and nightly test generation.
• C.Use synchronous calls for all three tasks for consistent response times, relying on prompt caching to reduce costs across workloads.
• D.Use synchronous calls for PR style checks and nightly test generation; use the Message Batches API only for weekly security audits.

Show answer & explanations

Correct answer: B

A: Style checks block the merge. A batch that may take up to 24 hours cannot sit on that path.

B: PR style checks block developers and require immediate responses via synchronous calls, while weekly security audits and nightly test generation are scheduled tasks with flexible deadlines that can tolerate up to a 24-hour batch window—capturing 50% savings for both.

C: Prompt caching does not replace the batch discount on the two jobs that can wait.

D: Nightly test generation does not need a synchronous answer. Leaving it off the batch gives up savings the schedule can tolerate.

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