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[BugFix] anthropic/serving_messages: fix tool call arguments streaming (#34887)

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Signed-off-by: Daniele Trifirò <dtrifiro@redhat.com>
Co-authored-by: Nicolò Lucchesi <nlucches@redhat.com>
This commit is contained in:
Daniele
2026-02-26 06:39:48 +01:00
committed by GitHub
parent 9d37941017
commit 4a9c07a0a2
1 changed files with 13 additions and 0 deletions
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13
vllm/entrypoints/anthropic/serving.py
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@@ -432,6 +432,19 @@ class AnthropicServingMessages(OpenAIServingChat):
data = chunk.model_dump_json(exclude_unset=True)
yield wrap_data_with_event(data, "content_block_start")
content_block_started = True
if tool_call.function and tool_call.function.arguments:
chunk = AnthropicStreamEvent(
index=content_block_index,
type="content_block_delta",
delta=AnthropicDelta(
type="input_json_delta",
partial_json=tool_call.function.arguments,
),
)
data = chunk.model_dump_json(exclude_unset=True)
yield wrap_data_with_event(
data, "content_block_delta"
)
else:
chunk = AnthropicStreamEvent(