From c090d23d43e3353a5aa71afe5b671937cad9a149 Mon Sep 17 00:00:00 2001
From: "Leonov Artur (Depish)" <depish.eskry@yandex.ru>
Date: Tue, 23 Sep 2025 18:33:48 +0300
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8=D0=BB=20?=
 =?UTF-8?q?=D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D1=8E=20?=
 =?UTF-8?q?=D0=BF=D0=BE=20=D0=BA=D1=83=D1=80=D1=81=D1=83=20=D1=80=D1=83?=
 =?UTF-8?q?=D0=B1=D0=BB=D1=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 cbrcurrency.py | 32 ++++++++++++++++++++++++++++++++
 mcp-moex.py    | 15 ++++++++++++++-
 moex.py        | 21 ++++++++++++++-------
 session.py     |  5 +++++
 4 files changed, 65 insertions(+), 8 deletions(-)
 create mode 100644 cbrcurrency.py
 create mode 100644 session.py

diff --git a/cbrcurrency.py b/cbrcurrency.py
new file mode 100644
index 0000000..56b1422
--- /dev/null
+++ b/cbrcurrency.py
@@ -0,0 +1,32 @@
+from cachetools import TTLCache
+import json
+
+from session import session
+
+
+__CBR_DAYLY_URL = "https://www.cbr-xml-daily.ru/daily_json.js"
+__cache: TTLCache = TTLCache(maxsize=10000, ttl=60 * 10)
+
+
+def __fetch_currency() -> dict:
+    if __CBR_DAYLY_URL in __cache:
+        return __cache[__CBR_DAYLY_URL]
+    
+    resp = session.get(__CBR_DAYLY_URL)
+    data = resp.json()
+    
+    __cache[__CBR_DAYLY_URL] = data["Valute"]
+    return data["Valute"]
+
+
+def get_currency(currency_charcode: str) -> dict:
+    if not currency_charcode in __cache:
+        currencies = __fetch_currency()
+        if currency_charcode in currencies:
+            currency = currencies[currency_charcode]
+            nominal = int(currency["Nominal"])
+            value = float(currency["Value"])
+            
+            return {f"1_{currency_charcode}": value / nominal, "CharCode": currency_charcode, "Name": currency["Name"]}
+        else:
+            return {"error": f'Unknow currency charcode {currency_charcode}'}
\ No newline at end of file
diff --git a/mcp-moex.py b/mcp-moex.py
index 403775f..6f0d014 100644
--- a/mcp-moex.py
+++ b/mcp-moex.py
@@ -3,8 +3,8 @@ from starlette.routing import Mount
 from mcp.server.fastmcp import FastMCP
 from typing import TypedDict, List
 
-
 from moex import bond_sequrities
+from cbrcurrency import get_currency
 
 
 mcp = FastMCP("mcp-moex - Данные с московской биржы.", port=8021)
@@ -22,5 +22,18 @@ def get_bond_securities(bond_ticker: str, board: str) -> dict:
     return bond_sequrities(bond_ticker, board)
 
 
+@mcp.tool()
+def get_currency_to_rub(currency_charcode: str) -> dict:
+    """
+    Возвращает курс рубля центробанка России к валюте по ее коду (например, "USD")
+    
+    Args:
+        currency_charcode (str): Код валюты (например, "USD", указывается в uppercase).
+    """
+    return get_currency(currency_charcode)
+
+
+
 if __name__ == "__main__":
     mcp.run(transport="streamable-http", mount_path="/mcp")
+
diff --git a/moex.py b/moex.py
index 9818d8d..5502eb0 100644
--- a/moex.py
+++ b/moex.py
@@ -1,18 +1,25 @@
-import requests
 import xmltodict
+from cachetools import TTLCache
 
+from session import session, MOEX_BASE_URL
 
-BASE_URL: str = "https://iss.moex.com/iss"
-
-session = requests.Session()
-
+__cache: TTLCache = TTLCache(maxsize=10000, ttl=60 * 60)
 
 
 def bond_sequrities(bond_ticker: str, board: str) -> dict:
-    res = requests.get(f"{BASE_URL}/engines/stock/markets/BONDS/boards/{board}/securities.xml?securities={bond_ticker}&iss.meta=off&iss.only=securities")
+    url: str = f"{MOEX_BASE_URL}/engines/stock/markets/BONDS/boards/{board}/securities.xml?securities={bond_ticker}&iss.meta=off&iss.only=securities"
+    
+    if url in __cache:
+        return __cache[url]
+    
+    res = session.get(url)
     
     if res.status_code != 200:
         return {"error": True, "status_code": res.status_code}
     
-    return xmltodict.parse(res.text)["document"]["data"]["rows"]["row"]
+    data = xmltodict.parse(res.text)["document"]["data"]["rows"]["row"]
+    data["@PREVPRICE_PERCENT"] = data.pop("@PREVPRICE")
+    __cache[url] = data
+    
+    return data 
 
diff --git a/session.py b/session.py
new file mode 100644
index 0000000..c3d1ec5
--- /dev/null
+++ b/session.py
@@ -0,0 +1,5 @@
+import requests
+
+session = requests.Session()
+
+MOEX_BASE_URL: str = "https://iss.moex.com/iss"
\ No newline at end of file