get_subreddit_rising_posts

Retrieve trending posts from any subreddit to identify content gaining popularity before it reaches the front page.

Instructions

Get rising posts from a specific subreddit

Input Schema

TableJSON Schema

Name	Required	Description	Default
`subreddit_name`	Yes	Name of the subreddit (e.g. 'Python', 'news')
`limit`	No	Number of posts to return (default: 10)

Implementation Reference

src/mcp_server_reddit/server.py:166-171 (handler)

The main handler function that fetches rising posts from the specified subreddit using the redditwarp SYNC client and constructs Post objects using the _build_post helper.

def get_subreddit_rising_posts(self, subreddit_name: str, limit: int = 10) -> list[Post]:
    """Get rising posts from a specific subreddit"""
    posts = []
    for subm in self.client.p.subreddit.pull.rising(subreddit_name, limit):
        posts.append(self._build_post(subm))
    return posts

src/mcp_server_reddit/server.py:301-321 (schema)

Input schema definition for the tool, specifying required 'subreddit_name' parameter and optional 'limit'.

Tool(
    name=RedditTools.GET_SUBREDDIT_RISING_POSTS.value,
    description="Get rising posts from a specific subreddit",
    inputSchema={
        "type": "object",
        "properties": {
            "subreddit_name": {
                "type": "string",
                "description": "Name of the subreddit (e.g. 'Python', 'news')",
            },
            "limit": {
                "type": "integer",
                "description": "Number of posts to return (default: 10)",
                "default": 10,
                "minimum": 1,
                "maximum": 100
            }
        },
        "required": ["subreddit_name"]
    }
),

src/mcp_server_reddit/server.py:412-417 (registration)

Registration and dispatch logic in the call_tool handler that validates arguments and invokes the get_subreddit_rising_posts method.

case RedditTools.GET_SUBREDDIT_RISING_POSTS.value:
    subreddit_name = arguments.get("subreddit_name")
    if not subreddit_name:
        raise ValueError("Missing required argument: subreddit_name")
    limit = arguments.get("limit", 10)
    result = reddit_server.get_subreddit_rising_posts(subreddit_name, limit)

src/mcp_server_reddit/server.py:94-107 (helper)

Supporting helper function that converts a redditwarp submission object into a structured Post model instance, used by the handler.

def _build_post(self, submission) -> Post:
    """Helper method to build Post object from submission"""
    return Post(
        id=submission.id36,
        title=submission.title,
        author=submission.author_display_name or '[deleted]',
        score=submission.score,
        subreddit=submission.subreddit.name,
        url=submission.permalink,
        created_at=submission.created_at.astimezone().isoformat(),
        comment_count=submission.comment_count,
        post_type=self._get_post_type(submission),
        content=self._get_post_content(submission)
    )

src/mcp_server_reddit/server.py:36-47 (schema)

Pydantic model defining the output structure of Post objects returned by the tool.

class Post(BaseModel):
    id: str
    title: str
    author: str
    score: int
    subreddit: str
    url: str
    created_at: str
    comment_count: int
    post_type: PostType
    content: str | None

MCP Server Reddit