`fastmcp.server.tasks.routing`

Task routing helper for MCP components. Provides unified task mode enforcement and docket routing logic.

Functions

`check_background_task`

check_background_task(component: Tool | Resource | ResourceTemplate | Prompt, task_type: TaskType, arguments: dict[str, Any] | None = None, task_meta: TaskMeta | None = None) -> mcp.types.CreateTaskResult | None

Check task mode and submit to background if requested. Args:

component: The MCP component
task_type: Type of task (“tool”, “resource”, “template”, “prompt”)
arguments: Arguments for tool/prompt/template execution
task_meta: Task execution metadata. If provided, execute as background task.

Returns:

CreateTaskResult if submitted to docket, None for sync execution

Raises:

McpError: If mode=“required” but no task metadata, or mode=“forbidden” but task metadata is present