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Python: Fix Anthropic streaming response bugs #3141

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Merged
eavanvalkenburg merged 3 commits into from
Jan 8, 2026
Merged

Python: Fix Anthropic streaming response bugs #3141

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e3d3d17
test commit identity
sukeesh Jan 8, 2026
51d4ce0
fix(anthropic): fix raw_representation and finish_reason in streaming
sukeesh Jan 8, 2026
8777135
lint fix
sukeesh Jan 8, 2026
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11 changes: 6 additions & 5 deletions python/packages/anthropic/agent_framework_anthropic/_chat_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -505,7 +505,7 @@ def _process_message(self, message: BetaMessage) -> ChatResponse:
usage_details=self._parse_usage_from_anthropic(message.usage),
model_id=message.model,
finish_reason=FINISH_REASON_MAP.get(message.stop_reason) if message.stop_reason else None,
raw_response=message,
raw_representation=message,
)

def _process_stream_event(self, event: BetaRawMessageStreamEvent) -> ChatResponseUpdate | None:
Expand All @@ -530,27 +530,28 @@ def _process_stream_event(self, event: BetaRawMessageStreamEvent) -> ChatRespons
finish_reason=FINISH_REASON_MAP.get(event.message.stop_reason)
if event.message.stop_reason
else None,
raw_response=event,
raw_representation=event,
)
case "message_delta":
usage = self._parse_usage_from_anthropic(event.usage)
return ChatResponseUpdate(
contents=[UsageContent(details=usage, raw_representation=event.usage)] if usage else [],
raw_response=event,
finish_reason=FINISH_REASON_MAP.get(event.delta.stop_reason) if event.delta.stop_reason else None,
raw_representation=event,
)
case "message_stop":
logger.debug("Received message_stop event; no content to process.")
case "content_block_start":
contents = self._parse_contents_from_anthropic([event.content_block])
return ChatResponseUpdate(
contents=contents,
raw_response=event,
raw_representation=event,
)
case "content_block_delta":
contents = self._parse_contents_from_anthropic([event.delta])
return ChatResponseUpdate(
contents=contents,
raw_response=event,
raw_representation=event,
)
case "content_block_stop":
logger.debug("Received content_block_stop event; no content to process.")
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