"""Server utilities and helper functions."""
from typing import Any, Dict, Optional, Set
from ..utils.utils import _coerce_scalar, _normalize_ohlcv_arg
def coerce_scalar(s: str) -> str:
"""Try to coerce a scalar string to int or float; otherwise return original string."""
return _coerce_scalar(s)
def normalize_ohlcv_arg(ohlcv: Optional[str]) -> Optional[Set[str]]:
"""Normalize user-provided OHLCV selection into a set of letters."""
return _normalize_ohlcv_arg(ohlcv)
def get_mcp_registry(mcp: Any) -> Optional[Dict[str, Any]]:
"""Return the MCP tool registry if available."""
for attr in ("tools", "_tools", "registry", "tool_registry", "_tool_registry"):
reg = getattr(mcp, attr, None)
if reg and hasattr(reg, "items"):
return reg
return None
