> ## Documentation Index
> Fetch the complete documentation index at: https://gofastmcp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# capabilities

# `fastmcp.server.tasks.capabilities`

SEP-1686 task capabilities declaration.

## Functions

### `get_task_capabilities` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/tasks/capabilities.py#L13" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python theme={"theme":{"light":"snazzy-light","dark":"dark-plus"}}
get_task_capabilities() -> ServerTasksCapability | None
```

Return the SEP-1686 task capabilities.

Returns task capabilities as a first-class ServerCapabilities field,
declaring support for list, cancel, and request operations per SEP-1686.

Returns None if a compatible pydocket is not installed (no task support).
Uses the canonical `is_docket_available()` check so that capability
advertisement and handler registration stay in sync — otherwise a server
with an old transitive pydocket would advertise task support and then
return "method not found" when clients invoked it.

Note: prompts/resources are passed via extra\_data since the SDK types
don't include them yet (FastMCP supports them ahead of the spec).