import json
from typing import Dict, Any, Tuple
def _require_type(obj: Any, expected: type, name: str) -> Tuple[bool, str]:
if not isinstance(obj, expected):
return False, f"'{name}' debe ser de tipo {expected.__name__}"
return True, ""
DEF = {
"name": "sum",
"title": "Sumatoria segura",
"description": "Suma una lista de números.",
"inputSchema": {
"type": "object",
"properties": {
"values": {"type": "array", "items": {"type": "number"}, "description": "Lista de números a sumar"}
},
"required": ["values"]
},
"outputSchema": {
"type": "object",
"properties": {"sum": {"type": "number"}},
"required": ["sum"]
}
}
def IMPL(args: Dict[str, Any]) -> Dict[str, Any]:
ok, err = _require_type(args, dict, "arguments")
if not ok:
raise ValueError(err)
values = args.get("values")
ok, err = _require_type(values, list, "values")
if not ok:
raise ValueError(err)
for i, v in enumerate(values):
if not isinstance(v, (int, float)):
raise ValueError(f"'values[{i}]' debe ser number")
total = float(sum(values))
payload = {"sum": total}
return {
"content": [{"type": "text", "text": json.dumps(payload, ensure_ascii=False)}],
"structuredContent": payload,
"isError": False
}
