Messages API & Conversation — CCDV-F Practice Question
A representative Claude Certified Developer - Foundations (CCDV-F) exam question on Messages API & Conversation. Work through it below, then read why each option is right or wrong.
Short answer
The correct answer is C. Send the relevant prior user and assistant turns again in the messages array.
Messages API calls are stateless with respect to conversation history. The application owns state and must include the relevant prior turns in each request.
The Question
A developer expects the Messages API to remember a user's previous request, but the second call has no context. What is the correct fix?
Why C is correct
Messages API calls are stateless with respect to conversation history. The application owns state and must include the relevant prior turns in each request.
Why the other options are wrong
Option A does not satisfy the requirement in the scenario. Review the explanation above: the correct choice (C) is the only one that fully meets every constraint stated in the question.
Option B does not satisfy the requirement in the scenario. Review the explanation above: the correct choice (C) is the only one that fully meets every constraint stated in the question.
Option D does not satisfy the requirement in the scenario. Review the explanation above: the correct choice (C) is the only one that fully meets every constraint stated in the question.
Key idea: Messages API & Conversation
Messages API calls are stateless with respect to conversation history. The application owns state and must include the relevant prior turns in each request. On the CCDV-F exam, questions in the "Applications and Integration" domain test whether you can map a scenario's constraints to the right choice. Read the requirement carefully, eliminate options that violate any single constraint, and pick the one that satisfies all of them with the least operational overhead.
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