docs: clarify BedrockResponse.is_json() always returns True#7748
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leandrodamascena merged 2 commits intoaws-powertools:developfrom Nov 28, 2025
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Addresses aws-powertools#7692 - Added comprehensive docstring to BedrockResponse.is_json() explaining why it always returns True regardless of content_type parameter - Updated BedrockResponse class docstring with note about Bedrock Agents only supporting TEXT content type - Added tip in bedrock_agents.md documentation to clarify content_type behavior for users - Included AWS documentation reference for context The content_type parameter is maintained for API consistency but does not affect the actual response format sent to Bedrock Agents, as they only support TEXT content type per AWS Lambda integration docs.
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Fixes #7692
Summary
Clarifies that
BedrockResponse.is_json()always returnsTrueregardless of thecontent_typeparameter due to AWS Bedrock Agents only supporting TEXT content type in the responseBody.Changes
BedrockResponseclass docstring explaining AWS Bedrock limitationis_json()method docstring with AWS documentation referenceContext
Amazon Bedrock Agents only support TEXT content type per the AWS Lambda integration documentation. All response bodies are automatically serialized as JSON strings regardless of the
content_typeparameter.The
content_typeparameter is maintained for API consistency but does not affect the actual response format sent to Bedrock Agents.User experience
Before:
Users were confused why
BedrockResponse.is_json()always returnsTrueeven when settingcontent_type="text/plain". The behavior was not documented, leading to assumptions that thecontent_typeparameter would control the response format.After:
Clear documentation in both the API reference (via docstrings) and user guide explains:
is_json()always returnsTruecontent_typeparameter is kept for API consistencyUsers will now understand this is expected behavior due to AWS platform constraints, not a bug.
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