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40 lines
1.2 KiB
Text
40 lines
1.2 KiB
Text
---
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title: error_handling
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sidebarTitle: error_handling
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---
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# `fastmcp.server.middleware.error_handling`
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Error handling middleware for consistent error responses and tracking.
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## Classes
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### `ErrorHandlingMiddleware` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/middleware/error_handling.py#L15"><Icon icon="github" size="14" /></a></sup>
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Middleware that provides consistent error handling and logging.
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Catches exceptions, logs them appropriately, and converts them to
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proper MCP error responses. Also tracks error patterns for monitoring.
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**Methods:**
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#### `get_error_stats` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/middleware/error_handling.py#L121"><Icon icon="github" size="14" /></a></sup>
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```python
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get_error_stats(self) -> dict[str, int]
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```
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Get error statistics for monitoring.
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### `RetryMiddleware` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/middleware/error_handling.py#L126"><Icon icon="github" size="14" /></a></sup>
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Middleware that implements automatic retry logic for failed requests.
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Retries requests that fail with transient errors, using exponential
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backoff to avoid overwhelming the server or external dependencies.
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