fix(vertex): raise clear error when using structured outputs on Vertex AI#1199
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bledden wants to merge 1 commit intoanthropics:mainfrom
Open
fix(vertex): raise clear error when using structured outputs on Vertex AI#1199bledden wants to merge 1 commit intoanthropics:mainfrom
bledden wants to merge 1 commit intoanthropics:mainfrom
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…x AI Vertex AI's Claude proxy does not support the output_config parameter, so calling messages.parse() with an AnthropicVertex client results in a confusing 400 error from Google: "output_config.format: Extra inputs are not permitted". This adds a check in _prepare_options to detect output_config and raise an AnthropicError with a clear message before the request is sent. Follows the same pattern as the existing batch API check. Fixes anthropics#1188
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Summary
Calling
messages.parse()with anAnthropicVertexclient sendsoutput_configin the request body, but Vertex AI's Claude proxy doesn't support this parameter. The result is a confusing 400 error from Google:This adds a check in the Vertex client's
_prepare_optionsto detectoutput_configand raise anAnthropicErrorwith a clear message before the request goes out. Follows the same pattern as the existing batch API check on line 410 of the same file.The error message suggests using the standard Anthropic client or manually parsing JSON responses as a workaround until Google adds
output_configsupport to their proxy.Added a test that verifies
parse()raisesAnthropicErroron the Vertex client. All 19 vertex tests pass.Fixes #1188