[Bug]: The agent node is configured with structured output, but when using the non-streaming API request, the returned value does not include the structured JSON output.

[Kingsuperyzy]

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RAGFlow workspace code commit ID

61209ff

RAGFlow image version

v0.24.0-136-g61209ff3b

Other environment information

macbook air m4
macos 15.5

Actual behavior

The agent node has structured output configured, but the structured JSON is missing from the response when the API is called in non-streaming mode.

The following are examples of streaming and non-streaming requests.

Expected behavior

No response

Steps to reproduce

Create a workflow with an agent node and enable structured output. Then call the agent conversation API with the stream parameter set to false.

Additional information

No response

[dosubot]

This is a confirmed bug with a clear root cause. The non-streaming accumulation logic in api/apps/sdk/session.py (lines 603-604) only preserves three specific fields (content, reference, and optionally trace), discarding all other structured output fields from the Canvas event stream:

final_ans["data"]["content"] = full_content
final_ans["data"]["reference"] = reference

In contrast, streaming mode forwards all event data without modification, which is why structured output works correctly with stream=true.

This issue has been reported in several related tickets:

• #8807 - Reference field empty in non-streaming mode
• #10791 - Python SDK KeyError in non-streaming mode
• #11541 - Structured output always empty

Workaround: Use stream=true until this is fixed. The structured output data is being generated correctly—it's just being dropped during response aggregation in non-streaming mode.

To reply, just mention @dosu.

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