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fix: handle all content items in multi-content tool results #6212

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fix: handle all content items in multi-content tool results #6212

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3deda4a
fix: handle all content items in multi-content tool results
Mar 13, 2026
c4f3a51
address review: handle edge cases in multi-content processing
Mar 13, 2026
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92 changes: 51 additions & 41 deletions astrbot/core/agent/runners/tool_loop_agent_runner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -758,52 +758,29 @@ def _append_tool_call_result(tool_call_id: str, content: str) -> None:
if isinstance(resp, CallToolResult):
res = resp
_final_resp = resp
if isinstance(res.content[0], TextContent):
if not res.content:
_append_tool_call_result(
func_tool_id,
res.content[0].text,
"",
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)
elif isinstance(res.content[0], ImageContent):
# Cache the image instead of sending directly
cached_img = tool_image_cache.save_image(
base64_data=res.content[0].data,
tool_call_id=func_tool_id,
tool_name=func_tool_name,
index=0,
mime_type=res.content[0].mimeType or "image/png",
)
_append_tool_call_result(
func_tool_id,
(
f"Image returned and cached at path='{cached_img.file_path}'. "
f"Review the image below. Use send_message_to_user to send it to the user if satisfied, "
f"with type='image' and path='{cached_img.file_path}'."
),
)
# Yield image info for LLM visibility (will be handled in step())
yield _HandleFunctionToolsResult.from_cached_image(
cached_img
)
elif isinstance(res.content[0], EmbeddedResource):
resource = res.content[0].resource
if isinstance(resource, TextResourceContents):
continue
image_index = 0
for item in res.content:
if isinstance(item, TextContent):
_append_tool_call_result(
func_tool_id,
resource.text,
item.text,
)
elif (
isinstance(resource, BlobResourceContents)
and resource.mimeType
and resource.mimeType.startswith("image/")
):
elif isinstance(item, ImageContent):
# Cache the image instead of sending directly
cached_img = tool_image_cache.save_image(
base64_data=resource.blob,
base64_data=item.data,
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tool_call_id=func_tool_id,
tool_name=func_tool_name,
index=0,
mime_type=resource.mimeType,
index=image_index,
mime_type=item.mimeType or "image/png",
)
image_index += 1
_append_tool_call_result(
func_tool_id,
(
Expand All @@ -812,15 +789,48 @@ def _append_tool_call_result(tool_call_id: str, content: str) -> None:
f"with type='image' and path='{cached_img.file_path}'."
),
)
# Yield image info for LLM visibility
# Yield image info for LLM visibility (will be handled in step())
yield _HandleFunctionToolsResult.from_cached_image(
cached_img
)
else:
_append_tool_call_result(
func_tool_id,
"The tool has returned a data type that is not supported.",
)
elif isinstance(item, EmbeddedResource):
resource = item.resource
if isinstance(resource, TextResourceContents):
_append_tool_call_result(
func_tool_id,
resource.text,
)
elif (
isinstance(resource, BlobResourceContents)
and resource.mimeType
and resource.mimeType.startswith("image/")
):
# Cache the image instead of sending directly
cached_img = tool_image_cache.save_image(
base64_data=resource.blob,
tool_call_id=func_tool_id,
tool_name=func_tool_name,
index=image_index,
mime_type=resource.mimeType,
)
image_index += 1
_append_tool_call_result(
func_tool_id,
(
f"Image returned and cached at path='{cached_img.file_path}'. "
f"Review the image below. Use send_message_to_user to send it to the user if satisfied, "
f"with type='image' and path='{cached_img.file_path}'."
),
)
# Yield image info for LLM visibility
yield _HandleFunctionToolsResult.from_cached_image(
cached_img
)
else:
_append_tool_call_result(
func_tool_id,
"The tool has returned a data type that is not supported.",
)

elif resp is None:
# Tool 直接请求发送消息给用户
Expand Down