mlx_lm/tool_parsers/qwen3_coder.py:79 calls ast.literal_eval() on every tool-call parameter value. This crashes on any string that looks like the start of a number but isn't valid Python (most notably ISO 8601 timestamps), causing the server to drop the entire tool call.

Fixed locally by wrapping ast.literal_eval with a try/except that falls back to the raw string. Two-line patch:

      try:                                                                                                        
          return ast.literal_eval(param_value)                                                                    
      except (ValueError, SyntaxError):                                                                           
          return param_value                

Applies at both call sites in _convert_param_value.