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fastmcp.server.middleware.timing

Timing middleware for measuring and logging request performance.

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Classes

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TimingMiddleware

Middleware that logs the execution time of requests. Only measures and logs timing for request messages (not notifications). Provides insights into performance characteristics of your MCP server. Methods:

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on_request 

on_request(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time request execution and log the results.

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DetailedTimingMiddleware

Enhanced timing middleware with per-operation breakdowns. Provides detailed timing information for different types of MCP operations, allowing you to identify performance bottlenecks in specific operations. Methods:

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on_call_tool 

on_call_tool(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time tool execution.

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on_read_resource 

on_read_resource(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time resource reading.

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on_get_prompt 

on_get_prompt(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time prompt retrieval.

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on_list_tools 

on_list_tools(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time tool listing.

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on_list_resources 

on_list_resources(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time resource listing.

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on_list_resource_templates 

on_list_resource_templates(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time resource template listing.

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on_list_prompts 

on_list_prompts(self, context: MiddlewareContext, call_next: CallNext) -> Any
Time prompt listing.