chore: Update SDK documentation (#3988)

Co-authored-by: marvin-context-protocol[bot] <225465937+marvin-context-protocol[bot]@users.noreply.github.com>
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marvin-context-protocol[bot] 2026-05-04 15:34:27 -04:00 committed by GitHub
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@ -10,7 +10,7 @@ Standalone @tool decorator for FastMCP.
## Functions
### `tool` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L381" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
### `tool` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L437" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
tool(name_or_fn: str | Callable[..., Any] | None = None) -> Any
@ -22,6 +22,16 @@ Standalone decorator to mark a function as an MCP tool.
Returns the original function with metadata attached. Register with a server
using mcp.add_tool().
**Args:**
- `run_in_thread`: Applies to sync tool functions only. When True (default),
the sync function is dispatched to a worker thread so it does not
block the event loop. Set to False to run the function inline on the
event loop thread — useful for libraries with thread affinity
(e.g. Windows COM via `uiautomation`/`comtypes`/`pywin32`, `tkinter`,
some GPU/driver bindings). Ignored for async functions. Cannot be
combined with `timeout` on a sync function\: inline calls have no
cancellation checkpoints, so the timeout would be a silent no-op.
## Classes
@ -37,11 +47,11 @@ Protocol for functions decorated with @tool.
Metadata attached to functions by the @tool decorator.
### `FunctionTool` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L90" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
### `FunctionTool` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L91" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
**Methods:**
#### `from_function` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L95" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
#### `from_function` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L111" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
from_function(cls, fn: Callable[..., Any]) -> FunctionTool
@ -57,7 +67,7 @@ individual parameters must not be passed.
Cannot be used together with metadata parameter.
#### `run` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L240" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
#### `run` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L285" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
run(self, arguments: dict[str, Any]) -> ToolResult
@ -66,7 +76,7 @@ run(self, arguments: dict[str, Any]) -> ToolResult
Run the tool with arguments.
#### `register_with_docket` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L303" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
#### `register_with_docket` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L357" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
register_with_docket(self, docket: Docket) -> None
@ -79,7 +89,7 @@ dependencies — both FastMCP's (CurrentContext, Progress) and
Docket-native ones (Retry, Timeout, ConcurrencyLimit).
#### `add_to_docket` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L314" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
#### `add_to_docket` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/tools/function_tool.py#L368" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
add_to_docket(self, docket: Docket, arguments: dict[str, Any], **kwargs: Any) -> Execution