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81 lines
2.8 KiB
Text
81 lines
2.8 KiB
Text
---
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title: exceptions
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sidebarTitle: exceptions
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---
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# `fastmcp.exceptions`
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Custom exceptions for FastMCP.
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## Classes
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### `FastMCPDeprecationWarning` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L8" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Deprecation warning for FastMCP APIs.
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Subclass of DeprecationWarning so that standard warning filters
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still apply, but FastMCP can selectively enable its own warnings
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without affecting other libraries in the process.
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### `FastMCPError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L17" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Base error for FastMCP.
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### `ValidationError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L25" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error in validating parameters or return values.
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### `ResourceError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L29" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error in resource operations.
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### `ToolError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L33" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error in tool operations.
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### `PromptError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L37" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error in prompt operations.
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### `InvalidSignature` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L41" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Invalid signature for use with FastMCP.
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### `ClientError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L45" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error in client operations.
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### `NotFoundError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L49" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Object not found.
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### `DisabledError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L53" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Object is disabled.
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### `AuthorizationError` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/exceptions.py#L57" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Error when authorization check fails.
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