Add temporary recovery for malformed or truncated DSML/tool calls

[XuZhangxing]

Idea: Add temporary recovery for malformed or truncated DSML/tool calls

I would like to suggest a temporary recovery mechanism for malformed or truncated tool calls.

A related issue has already been reported in the DeepSeek-V3 repository:

Response prematurely terminates with FINISHED status

In that issue, the model can terminate early around DSML/tool-call-related content while the response is still incomplete.

I observed related behavior in Harness with both deepseek-flash and deepseek-v4-pro. In some cases, malformed tool-call output results in:

MALFORMED_RESPONSE
DeepSeek Messages stream: tool input is invalid JSON

I understand that the underlying problem may need to be fixed on the model side. But as a temporary mitigation, could Harness detect malformed/incomplete tool calls and:

• discard the invalid tool-call data;
• retry or regenerate the tool call;
• prevent the malformed data from breaking the whole session.

The goal is simply:

One malformed model output should not make the entire Agent session unrecoverable.

This could provide a useful defensive layer while the underlying model-side issue is being investigated.

Session日志.zip

[XuZhangxing]

10月15日发现没有这个问题了