ساخت یک سرور MCP

meta = params.get("_meta")              # کد -32602 در صورت مفقود بودن
requested = meta.get(VERSION_KEY)       # کلید protocolVersion
if requested not in SUPPORTED_VERSIONS:
    raise RpcProblem(-32022, "Unsupported protocol version",
        {"requested": requested, "supported": SUPPORTED_VERSIONS.copy()})
if not isinstance(meta.get(CAPABILITIES_KEY), dict):
    raise RpcProblem(-32602, f"{CAPABILITIES_KEY} is required")
result = {"resultType": "complete", **payload,
    "_meta": {SERVER_INFO_KEY: SERVER_INFO.copy()}}
if ttl_ms is not None:                  # لیست‌ها، خواندن‌ها، شناسایی
    result["ttlMs"] = ttl_ms
    result["cacheScope"] = cache_scope  # مقدار پیش‌فرض "private"

TOOL_EXECUTORS = {"notes_search": exec_notes_search}  # نام به تابع
def handle_tools_list(params):
    return complete({"tools": sorted(TOOLS, key=lambda tool: tool["name"])},
                    ttl_ms=60_000, cache_scope="public")
def handle_tools_call(params):
    executor = TOOL_EXECUTORS.get(name)
    if executor is None:                              # نتیجه، نه خطای RPC
        return complete({"content": [...], "isError": True})
    try:
        return complete({"content": executor(arguments), "isError": False})
    except (KeyError, TypeError, ValueError) as exc:
        return complete({"content": [...], "isError": True})