Logging changedspecification/2025-06-18/server/utilities/logging
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Upstream edited this page at 28 Sep 2026 21:57 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 28 Sep 2026 22:07 UTC.
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2929The protocol follows the standard syslog severity levels specified in
3030[RFC 5424](https://datatracker.ietf.org/doc/html/rfc5424#section-6.2.1):
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32| Level | Description | Example Use Case |
33| --------- | -------------------------------- | -------------------------- |
34| debug | Detailed debugging information | Function entry/exit points |
35| info | General informational messages | Operation progress updates |
36| notice | Normal but significant events | Configuration changes |
37| warning | Warning conditions | Deprecated feature usage |
38| error | Error conditions | Operation failures |
39| critical | Critical conditions | System component failures |
40| alert | Action must be taken immediately | Data corruption detected |
41| emergency | System is unusable | Complete system failure |
32| Level | Description | Example Use Case |
33| - | - | - |
34| debug | Detailed debugging information | Function entry/exit points |
35| info | General informational messages | Operation progress updates |
36| notice | Normal but significant events | Configuration changes |
37| warning | Warning conditions | Deprecated feature usage |
38| error | Error conditions | Operation failures |
39| critical | Critical conditions | System component failures |
40| alert | Action must be taken immediately | Data corruption detected |
41| emergency | System is unusable | Complete system failure |
4242
4343## Protocol Messages
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