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logging

docs/python-sdk/fastmcp-utilities-logging.mdx

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fastmcp.utilities.logging

Logging utilities for FastMCP.

Functions

get_logger <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/utilities/logging.py#L14" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

python
get_logger(name: str) -> logging.Logger

Get a logger nested under FastMCP namespace.

Args:

  • name: the name of the logger, which will be prefixed with 'FastMCP.'

Returns:

  • a configured logger instance

configure_logging <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/utilities/logging.py#L29" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

python
configure_logging(level: Literal['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] | int = 'INFO', logger: logging.Logger | None = None, enable_rich_tracebacks: bool | None = None, **rich_kwargs: Any) -> None

Configure logging for FastMCP.

Args:

  • logger: the logger to configure
  • level: the log level to use
  • rich_kwargs: the parameters to use for creating RichHandler

temporary_log_level <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/utilities/logging.py#L111" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

python
temporary_log_level(level: str | None, logger: logging.Logger | None = None, enable_rich_tracebacks: bool | None = None, **rich_kwargs: Any)

Context manager to temporarily set log level and restore it afterwards.

Args:

  • level: The temporary log level to set (e.g., "DEBUG", "INFO")
  • logger: Optional logger to configure (defaults to FastMCP logger)
  • enable_rich_tracebacks: Whether to enable rich tracebacks
  • **rich_kwargs: Additional parameters for RichHandler