[BUG] agent is sending empty tool names

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

I'm trying to get cc to run vs oai using litellm. I was getting a lot of errors regarding empty tool names. I looked into what was getting sent from Claude and that there are empty tool names sent. Is this a bug? Any way of preventing this from happening? Below is offending payload bit

"messages": [ {
"role": "assistant",
"content": [
{
"type": "text",
"text": "(no content)"
},
{
"type": "tool_use",
"id": "call_EQdPU6OOeTZ9o9WD5GliXOf4",
"name": "",
"input": {
"todos": [
{
"content": "Answer question about available tools",
"status": "in_progress",
"activeForm": "Answering question about available tools"
}
]
},
"cache_control": {
"type": "ephemeral"
}
}
]
},
{
"role": "user",
"content": [
{
"type": "tool_result",
"content": "<tool_use_error>Error: No such tool available: </tool_use_error>",
"is_error": true,
"tool_use_id": "call_EQdPU6OOeTZ9o9WD5GliXOf4",
"cache_control": {
"type": "ephemeral"
}
}
]
}
],

What Should Happen?

All tools should have a name

Error Messages/Logs

Steps to Reproduce

Ask Claude code which tools does it have available

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.27

Platform

Other

Operating System

Ubuntu/Debian Linux

Terminal/Shell

WSL (Windows Subsystem for Linux)

Additional Information

_No response_