import json, hashlib
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": "sha256",
"title": "Hash SHA-256",
"description": "Calcula el hash SHA-256 de una cadena UTF-8.",
"inputSchema": {
"type": "object",
"properties": {"text": {"type": "string", "description": "Texto de entrada"}},
"required": ["text"]
},
"outputSchema": {
"type": "object",
"properties": {"hex": {"type": "string"}},
"required": ["hex"]
}
}
def IMPL(args: Dict[str, Any]) -> Dict[str, Any]:
ok, err = _require_type(args, dict, "arguments")
if not ok:
raise ValueError(err)
text = args.get("text")
ok, err = _require_type(text, str, "text")
if not ok:
raise ValueError(err)
digest = hashlib.sha256(text.encode("utf-8")).hexdigest()
payload = {"hex": digest}
return {
"content": [{"type": "text", "text": json.dumps(payload, ensure_ascii=False)}],
"structuredContent": payload,
"isError": False
}
