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Fix: AG-UI assistant text and tool call order #2328

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Merged
merged 3 commits into from
Jul 28, 2025
Merged

Fix: AG-UI assistant text and tool call order #2328

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2c45eab
Fix ag_ui message toolcall order to support Anthropic requirements
ChuckJonas Jul 27, 2025
66baaef
Restore newlines around message
DouweM Jul 28, 2025
5c06075
Merge branch 'main' into patch-1
DouweM Jul 28, 2025
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6 changes: 3 additions & 3 deletions pydantic_ai_slim/pydantic_ai/ag_ui.py
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Original file line number Diff line number Diff line change
Expand Up @@ -486,6 +486,9 @@ def _messages_from_ag_ui(messages: list[Message]) -> list[ModelMessage]:
if isinstance(msg, UserMessage):
result.append(ModelRequest(parts=[UserPromptPart(content=msg.content)]))
elif isinstance(msg, AssistantMessage):
if msg.content:
result.append(ModelResponse(parts=[TextPart(content=msg.content)]))

if msg.tool_calls:
for tool_call in msg.tool_calls:
tool_calls[tool_call.id] = tool_call.function.name
Expand All @@ -502,9 +505,6 @@ def _messages_from_ag_ui(messages: list[Message]) -> list[ModelMessage]:
]
)
)

if msg.content:
result.append(ModelResponse(parts=[TextPart(content=msg.content)]))
elif isinstance(msg, SystemMessage):
result.append(ModelRequest(parts=[SystemPromptPart(content=msg.content)]))
elif isinstance(msg, ToolMessage):
Expand Down