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fix: handle MCP resource content type blob and URI variants (#25260)

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maco
2026-06-29 12:12:11 +02:00
committed by GitHub
parent 0be069c165
commit c65b29ec0f
1 changed files with 23 additions and 0 deletions
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23
backend/open_webui/utils/middleware.py
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@@ -1162,6 +1162,29 @@ async def process_tool_result(
except json.JSONDecodeError:
pass
tool_response.append(text)
elif resource.get('blob'):
mime_type = resource.get('mimeType', 'application/octet-stream')
blob = resource.get('blob', '')
if mime_type.startswith('image/'):
file_url = await get_file_url_from_base64(
request,
f'data:{mime_type};base64,{blob}',
{
'chat_id': metadata.get('chat_id', None),
'message_id': metadata.get('message_id', None),
'session_id': metadata.get('session_id', None),
'result': item,
},
user,
)
tool_result_files.append({'type': 'image', 'url': file_url})
else:
uri = resource.get('uri', 'resource')
tool_response.append(
f'[Resource: {uri}] (binary data, mimeType: {mime_type})'
)
elif resource.get('uri'):
tool_response.append(resource.get('uri'))
tool_result = tool_response[0] if len(tool_response) == 1 else tool_response
else: # OpenAPI
for item in tool_result: