bedrock toolUseId is being hallucinated

[double16]

What happened?

Using bedrock models:

  "modelId": "us.anthropic.claude-sonnet-4-5-20250929-v1:0",
  "embeddingModel": "amazon.titan-embed-text-v2:0",
  "evaluationModel": "us.anthropic.claude-3-5-sonnet-20241022-v2:0",
  "swarmModel": "us.anthropic.claude-3-5-sonnet-20241022-v2:0",

Error:

TERMINATED: An error occurred (ValidationException) when calling the ConverseStream operation: The toolUse blocks at messages.2.content contain duplicate Ids: http_request

Events:

CYBER_EVENT{"type": "http_request_start", "method": "GET", "url": "CENSORED", "id": "OP_20260129_223235_11", "timestamp": "2026-01-29T22:32:51.922484"}CYBER_EVENT_END 

CYBER_EVENT{"type": "http_request_start", "method": "GET", "url": "CENSORED", "id": "OP_20260129_223235_13", "timestamp": "2026-01-29T22:32:52.382367"}CYBER_EVENT_END 

CYBER_EVENT{"type": "tool_start", "tool_name": "http_request", "tool_id": "tooluse_BBO78QZ2Q-mQxGBOlx0zFg", "tool_input": {"method": "GET", "url": "CENSORED", "metrics": true}, "id": "OP_20260129_223235_18", "timestamp": "2026-01-29T22:32:52.586825"}CYBER_EVENT_END 

CYBER_EVENT{"type": "tool_start", "tool_name": "http_request", "tool_id": "tooluse_vxH1v89tTq2vHkk4_MMA_Q", "tool_input": {"method": "GET", "url": "CENSORED", "metrics": true}, "id": "OP_20260129_223235_20", "timestamp": "2026-01-29T22:32:52.603814"}CYBER_EVENT_END 

CYBER_EVENT{"type": "tool_end", "tool_name": "http_request", "tool_id": "tooluse_vxH1v89tTq2vHkk4_MMA_Q", "success": true, "id": "OP_20260129_223235_36", "timestamp": "2026-01-29T22:34:05.210966"}CYBER_EVENT_END

How to reproduce

Running with multiple URLs in the objective seems to cause the model to invoke concurrent http_request tools, resulting in the error.

How are you running it?

Docker Compose

Provider and Model

us.anthropic.claude-sonnet-4-5-20250929-v1:0

Operating System

No response

Python Version

No response

Node Version (if using React UI)

No response

Cyber-AutoAgent Version

0.5.0

Error logs

[double16]

When the model does not generate unique looking toolUseId values, the code will generate them as tooluse_${uuid4.hex()}. It replaces the toolUseId back to tool_name before sending to the model so it shouldn't see the generated value. It has occurred when sending back the generated value, the model will hallucinate toolUseId.

Looking at ToolUseIdHook, when the toolUseId is generated, it sends back toolUseId as tool_name. This may not always be correct, the value may have been None or empty.