CCAO-F Using the Claude API Practice Question
A developer is building a document-summarization service that sends very large PDFs to Claude. The first request returns a 413 error with a message indicating the request entity is too large. The developer wants to keep using the Messages API directly. Which change best resolves the error while preserving the ability to summarize the full document?
⚠ Common exam trap
Candidates often confuse generation controls such as max_tokens or stream with the request body size limit that actually triggers the 413.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Split the document into smaller chunks and send them in multiple Messages API calls, then combine the partial summaries.
An HTTP 413 signals that the request body exceeds the API's permitted size. The Messages API does not accept arbitrarily large inputs, so the developer must reduce each request's payload. Chunking the document into smaller pieces and summarizing each, then combining results, keeps every request within limits and still covers the whole document. Output-length parameters, streaming flags, and sampling settings do not influence request size limits.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set the stream parameter to true so the API streams the request body and bypasses the size limit.
Why it's wrong here
The stream parameter controls whether the response is delivered as server-sent events; it does not affect the size of the request body or the API's input limit. Streaming the response does not make the API accept a larger payload. The 413 will still occur because the request itself is too large, so this change does not address the root cause.
- ✗
Lower the temperature to 0 so the model processes the input more efficiently and accepts the larger payload.
Why it's wrong here
Temperature affects sampling randomness in the generated output and has no bearing on request size limits or input processing capacity. A 413 is an HTTP-level rejection of the request body, independent of generation parameters. Changing temperature will not prevent the API from rejecting an oversized payload and leaves the original problem unresolved.
- ✓
Split the document into smaller chunks and send them in multiple Messages API calls, then combine the partial summaries.
Why this is correct
A 413 indicates the request body exceeds the API's size limit. Chunking the document into smaller segments keeps each request within the limit, and aggregating the per-chunk summaries preserves coverage of the full document. This approach works within the Messages API's constraints and is a standard pattern for handling large inputs without switching to a different product or violating limits.
- ✗
Increase the max_tokens value in the request to allow the API to accept more input.
Why it's wrong here
max_tokens controls the number of tokens the model may generate in its response, not the size of the input the API will accept. Raising it does not change the request body size limit and will not resolve a 413 error. It may even increase cost and latency. The developer must reduce the payload or use a mechanism that handles large inputs instead of adjusting output length.
Visual reference
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Anthropic exam blueprint
This CCAO-F practice question is part of Courseiva's free Anthropic certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCAO-F exam.