get_metabase_collection

Retrieve a Metabase collection by ID to access its metadata, enabling users to manage and interact with BI assets through the Metabase MCP Server.

Instructions

Retrieve a single Metabase collection by ID.

Args: collection_id (int): ID of the collection.

Returns: Dict[str, Any]: Collection metadata.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`collection_id`	Yes

Implementation Reference

src/metabase_mcp_server.py:251-262 (handler)

The handler function that executes the get_metabase_collection tool logic. It accepts a collection_id parameter and makes a GET request to the Metabase API endpoint /api/collection/{collection_id}.

async def get_metabase_collection(collection_id: int) -> Dict[str, Any]:
    """
    Retrieve a single Metabase collection by ID.

    Args:
        collection_id (int): ID of the collection.

    Returns:
        Dict[str, Any]: Collection metadata.
    """
    logger.info(f"Getting collection with ID {collection_id}")
    return await make_metabase_request(RequestMethod.GET, f"/api/collection/{collection_id}")

src/metabase_mcp_server.py:250-250 (registration)
The @mcp.tool() decorator registers the get_metabase_collection function as an MCP tool with the FastMCP framework.
```
@mcp.tool()
```

src/metabase_mcp_server.py:162-247 (helper)

The make_metabase_request helper function that handles HTTP requests to the Metabase API. It manages session handling, error handling, and response parsing.

async def make_metabase_request(
    method: RequestMethod,
    endpoint: str,
    data: Optional[Dict[str, Any] | bytes] = None,
    params: Optional[Dict[str, Any]] = None,
    json: Any = None,
    headers: Optional[Dict[str, str]] = None,
) -> Dict[str, Any]:
    """
    Make a request to the Metabase API.
    
    Args:
        method: HTTP method to use (GET, POST, PUT, DELETE)
        endpoint: API endpoint path
        data: Request data (for form data)
        params: URL parameters
        json: JSON request body
        headers: Additional headers
        
    Returns:
        Dict[str, Any]: Response data
        
    Raises:
        MetabaseConnectionError: When the Metabase server is unreachable
        MetabaseResponseError: When Metabase returns a non-2xx status code
        RuntimeError: For other errors
    """
    
    if not METABASE_URL or not METABASE_API_KEY:
        raise RuntimeError("METABASE_URL or METABASE_API_KEY environment variable is not set. Metabase API requests will fail.")

    if session is None:
        raise RuntimeError("HTTP session is not initialized. Ensure app_lifespan was called.")

    try:
        request_headers = headers or {}
        
        logger.debug(f"Making {method.name} request to {METABASE_URL}{endpoint}")
        
        # Log request payload for debugging (omit sensitive info)
        if json and logger.level <= logging.DEBUG:
            sanitized_json = {**json}
            if 'password' in sanitized_json:
                sanitized_json['password'] = '********'
            logger.debug(f"Request payload: {sanitized_json}")
            
        response = await session.request(
            method=method.name,
            url=endpoint,
            timeout=aiohttp.ClientTimeout(total=30),
            headers=request_headers,
            data=data,
            params=params,
            json=json,
        )

        try:
            # Handle 500 errors with more detailed info
            if response.status >= 500:
                error_text = await response.text()
                logger.error(f"Server error {response.status}: {error_text[:200]}")
                raise MetabaseResponseError(response.status, f"Server Error: {error_text[:200]}", endpoint)
            
            response.raise_for_status()
            response_data = await response.json()
            
            # Ensure the response is a dictionary for FastMCP compatibility
            return ensure_dict_response(response_data)
            
        except aiohttp.ContentTypeError:
            # Handle empty responses or non-JSON responses
            content = await response.text()
            if not content:
                return {"data": {}}
            logger.warning(f"Received non-JSON response: {content}")
            return {"data": content}

    except aiohttp.ClientConnectionError as e:
        logger.error(f"Connection error: {str(e)}")
        raise MetabaseConnectionError("Metabase is unreachable. Is the Metabase server running?") from e
    except aiohttp.ClientResponseError as e:
        logger.error(f"Response error: {e.status}, {e.message}, {e.request_info.url}")
        raise MetabaseResponseError(e.status, e.message, str(e.request_info.url)) from e
    except Exception as e:
        logger.error(f"Request error: {str(e)}")
        raise RuntimeError(f"Request error: {str(e)}") from e

src/enums/request_enum.py:1-11 (helper)

The RequestMethod enum used by the handler to specify the HTTP method (GET) for the API request.

from enum import Enum, auto

class RequestMethod(Enum):
    GET = auto()
    POST = auto()
    PUT = auto()
    DELETE = auto()

    def __str__(self):
        return self.name

Metabase MCP Server