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fastmcp.server.middleware.error_handling

Error handling middleware for consistent error responses and tracking.

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Classes

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ErrorHandlingMiddleware ^↗

Middleware that provides consistent error handling and logging.

Catches exceptions, logs them appropriately, and converts them to proper MCP error responses. Also tracks error patterns for monitoring.

Methods:

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get_error_stats ^↗

get_error_stats(self) -> dict[str, int]

Get error statistics for monitoring.

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RetryMiddleware ^↗

Middleware that implements automatic retry logic for failed requests.

Retries requests that fail with transient errors, using exponential backoff to avoid overwhelming the server or external dependencies.