USCardForum MCP Server

Instructions

Implementation Reference

• src/uscardforum/server_tools/topics.py:12-47 (handler)

  MCP tool handler for get_hot_topics: decorated with @mcp.tool(), calls the client API with optional page parameter, returns list of TopicSummary.
  @mcp.tool() def get_hot_topics( page: Annotated[ int | None, Field(default=None, description="Page number for pagination (0-indexed, default: 0)"), ] = None, ) -> list[TopicSummary]: """ Fetch currently trending/hot topics from USCardForum. This returns the most actively discussed topics right now, ranked by engagement metrics like recent replies, views, and likes. Use this to: - See what the community is currently discussing - Find breaking news or time-sensitive opportunities - Discover popular ongoing discussions Args: page: Page number for pagination (0-indexed). Use page=1 to get more topics. Returns a list of TopicSummary objects with fields: - id: Topic ID (use with get_topic_posts) - title: Topic title - posts_count: Total replies - views: View count - like_count: Total likes - created_at: Creation timestamp - last_posted_at: Last activity timestamp Example response interpretation: A topic with high views but low posts may be informational. A topic with many recent posts is actively being discussed. """ return get_client().get_hot_topics(page=page)
• src/uscardforum/models/topics.py:10-25 (schema)

  Pydantic model TopicSummary used as return type for get_hot_topics, defining the structure of each topic summary.
  class TopicSummary(BaseModel): """Summary of a topic for list views (hot, new, top topics).""" id: int = Field(..., description="Unique topic identifier") title: str = Field(..., description="Topic title") posts_count: int = Field(0, description="Total number of posts") views: int = Field(0, description="Total view count") like_count: int = Field(0, description="Total likes on the topic") category_id: int | None = Field(None, description="Category identifier") category_name: str | None = Field(None, description="Category name") created_at: datetime | None = Field(None, description="When topic was created") last_posted_at: datetime | None = Field(None, description="Last activity time") class Config: extra = "ignore"
• src/uscardforum/api/topics.py:30-50 (helper)

  Client-side API implementation in TopicsAPI.get_hot_topics: makes HTTP GET to /hot.json, parses JSON, returns list of TopicSummary.
  def get_hot_topics(self, *, page: int | None = None) -> list[TopicSummary]: """Fetch currently trending topics. Args: page: Page number for pagination (0-indexed, default: 0) Returns: List of hot topic summaries """ params: dict[str, Any] = {} if page is not None: params["page"] = int(page) payload = self._get( "/hot.json", params=params or None, headers={"Accept": "application/json, text/plain, */*"}, ) topics = payload.get("topic_list", {}).get("topics", []) return [TopicSummary(**t) for t in topics]
• src/uscardforum/server_core.py:136-180 (helper)

  get_client() helper: creates and returns the shared DiscourseClient instance, handles auto-login if credentials provided.
  def get_client() -> DiscourseClient: """Get or create the Discourse client instance.""" global _client, _login_attempted if _client is None: base_url = os.environ.get("USCARDFORUM_URL", "https://www.uscardforum.com") timeout = float(os.environ.get("USCARDFORUM_TIMEOUT", "15.0")) username = os.environ.get("NITAN_USERNAME") password = os.environ.get("NITAN_PASSWORD") user_api_key = os.environ.get("NITAN_API_KEY") user_api_client_id = os.environ.get("NITAN_API_CLIENT_ID") _client = DiscourseClient( base_url=base_url, timeout_seconds=timeout, user_api_key=user_api_key if not (username and password) else None, user_api_client_id=( user_api_client_id if not (username and password) else None ), ) if _client.is_authenticated: print("[uscardforum] Using User API Key authentication") elif not _login_attempted: _login_attempted = True if username and password: try: result = _client.login(username, password) if result.success: print(f"[uscardforum] Auto-login successful as '{result.username}'") elif result.requires_2fa: print( "[uscardforum] Auto-login failed: 2FA required. Use login() tool with second_factor_token." ) else: print( f"[uscardforum] Auto-login failed: {result.error or 'Unknown error'}" ) except Exception as e: # pragma: no cover - logging side effect print(f"[uscardforum] Auto-login error: {e}") return _client
• src/uscardforum/server_tools/__init__.py:56-64 (registration)

  Import of get_hot_topics from server_tools/topics.py in server_tools __init__.py, which triggers registration via @mcp.tool() decorator when imported by server.py.
  from .topics import ( get_all_topic_posts, get_hot_topics, get_new_topics, get_top_topics, get_topic_info, get_topic_posts, )