superset_database_get_function_names
Retrieve all SQL function names supported by a specific database in Apache Superset to understand available query capabilities and ensure compatible SQL operations.
Instructions
Get function names supported by a database
Makes a request to the /api/v1/database/{id}/function_names/ endpoint to retrieve all SQL functions supported by the database.
Args: database_id: ID of the database
Returns: A dictionary with list of supported function names
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| database_id | Yes |
Implementation Reference
- main.py:994-1014 (handler)Handler function decorated with @mcp.tool() that implements the tool by making an authenticated GET request to Superset API endpoint /api/v1/database/{database_id}/function_names/ using the shared make_api_request helper.
@mcp.tool() @requires_auth @handle_api_errors async def superset_database_get_function_names( ctx: Context, database_id: int ) -> Dict[str, Any]: """ Get function names supported by a database Makes a request to the /api/v1/database/{id}/function_names/ endpoint to retrieve all SQL functions supported by the database. Args: database_id: ID of the database Returns: A dictionary with list of supported function names """ return await make_api_request( ctx, "get", f"/api/v1/database/{database_id}/function_names/" ) - main.py:994-994 (registration)The @mcp.tool() decorator registers this function as an MCP tool.
@mcp.tool() - main.py:271-330 (helper)Shared helper function used by the tool to make authenticated API requests to Superset, handling token refresh, CSRF, and error handling.
async def make_api_request( ctx: Context, method: str, endpoint: str, data: Dict[str, Any] = None, params: Dict[str, Any] = None, auto_refresh: bool = True, ) -> Dict[str, Any]: """ Helper function to make API requests to Superset Args: ctx: MCP context method: HTTP method (get, post, put, delete) endpoint: API endpoint (without base URL) data: Optional JSON payload for POST/PUT requests params: Optional query parameters auto_refresh: Whether to auto-refresh token on 401 """ superset_ctx: SupersetContext = ctx.request_context.lifespan_context client = superset_ctx.client # For non-GET requests, make sure we have a CSRF token if method.lower() != "get" and not superset_ctx.csrf_token: await get_csrf_token(ctx) async def make_request() -> httpx.Response: headers = {} # Add CSRF token for non-GET requests if method.lower() != "get" and superset_ctx.csrf_token: headers["X-CSRFToken"] = superset_ctx.csrf_token if method.lower() == "get": return await client.get(endpoint, params=params) elif method.lower() == "post": return await client.post( endpoint, json=data, params=params, headers=headers ) elif method.lower() == "put": return await client.put(endpoint, json=data, headers=headers) elif method.lower() == "delete": return await client.delete(endpoint, headers=headers) else: raise ValueError(f"Unsupported HTTP method: {method}") # Use auto_refresh if requested response = ( await with_auto_refresh(ctx, make_request) if auto_refresh else await make_request() ) if response.status_code not in [200, 201]: return { "error": f"API request failed: {response.status_code} - {response.text}" } return response.json()