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cryptopanic_news.py

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+import requests
+
+def get_posts(
+    auth_token: str,
+    kind: str = None,          # e.g. "news", "blogs", "videos"
+    currencies: list = None,   # e.g. ["BTC", "ETH"]
+    regions: list = None,      # e.g. ["en"] or country codes
+    public: bool = True,        # whether to include public posts
+    filter_duplicates: bool = True,
+    page: int = 1,
+    filter: str = None          # a general filter string
+) -> dict:
+    """
+    Fetch posts from CryptoPanic.
+    """
+    API_BASE = "https://cryptopanic.com/api/developer/v2"
+    #url = f"{API_BASE}/posts/"
+    url = "https://cryptopanic.com/api/developer/v2/posts/"
+    headers = {
+        "Accept": "application/json"
+    }
+    params = {
+        "auth_token": auth_token,
+        "public": "true" if public else "false",
+        "page": page,
+    }
+    if kind:
+        params["kind"] = kind
+    if currencies:
+        print(currencies)
+        # CryptoPanic expects multiple items comma-separated or repeated parameters
+        # Checking docs: uses comma-separated list.  
+        params["currencies"] = ",".join(currencies)
+    if regions:
+        params["regions"] = ",".join(regions)
+    if filter_duplicates:
+        params["filter_duplicates"] = "true"
+    if filter:
+        params["filter"] = filter
+
+    response = requests.get(url, params=params, headers=headers)
+    response.raise_for_status()
+    print(url)
+    return response.json()

cryptopanic_news_server.py

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+from mcp.server.fastmcp import FastMCP
+from cryptopanic_news import get_posts
+import os
+from dotenv import load_dotenv
+load_dotenv(override=True)
+
+mcp = FastMCP("cryptopanic_news_server")
+
+@mcp.tool()
+async def get_crypto_news(currencies_ls: list | str | None = None) -> str:
+    """Fetch latest cryptocurrency news from CryptoPanic.
+
+    Args:
+        currencies_ls: The list of cryptocurrency symbols to filter news by. Accepts a single string (e.g. "BTC") or a list of symbols (e.g. ["HYPE", "ETC", "BTC", "XRP"]). 
+
+        If set to None, retrieves the general CryptoPanic news feed 
+        without filtering by any specific currency.
+    """
+    token = os.getenv("CRYPTOPANIC_API_KEY")
+    if not token:
+        return "Error: CRYPTOPANIC_API_KEY not set."
+
+    # Allow a single string or a list
+    if isinstance(currencies_ls, str):
+        currencies_ls = [currencies_ls]
+
+    data = get_posts(
+        auth_token=token,
+        kind="news",
+        currencies=currencies_ls,
+        page=1
+    )
+
+    if not isinstance(data, dict):
+        return f"Error: Unexpected API response: {data!r}"
+
+    results = []
+    for post in data.get("results", []):
+        title = post.get("title") or "No title"
+        desc = post.get("description") or ""
+        pub  = post.get("published_at") or "Unknown time"
+        results.append(f"title: {title}\n{desc[:200]}\npublished at: {pub}\n")
+
+    return "\n".join(results) if results else "No recent crypto news found."
+
+if __name__ == "__main__":
+    mcp.run(transport='stdio')