Logging changedspecification/2026-07-28/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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4242The protocol follows the standard syslog severity levels specified in
4343[RFC 5424](https://datatracker.ietf.org/doc/html/rfc5424#section-6.2.1):
4444
45| Level | Description | Example Use Case |
46| --------- | -------------------------------- | -------------------------- |
47| debug | Detailed debugging information | Function entry/exit points |
48| info | General informational messages | Operation progress updates |
49| notice | Normal but significant events | Configuration changes |
50| warning | Warning conditions | Deprecated feature usage |
51| error | Error conditions | Operation failures |
52| critical | Critical conditions | System component failures |
53| alert | Action must be taken immediately | Data corruption detected |
54| emergency | System is unusable | Complete system failure |
45| Level | Description | Example Use Case |
46| - | - | - |
47| debug | Detailed debugging information | Function entry/exit points |
48| info | General informational messages | Operation progress updates |
49| notice | Normal but significant events | Configuration changes |
50| warning | Warning conditions | Deprecated feature usage |
51| error | Error conditions | Operation failures |
52| critical | Critical conditions | System component failures |
53| alert | Action must be taken immediately | Data corruption detected |
54| emergency | System is unusable | Complete system failure |
5555
5656## Requesting Log Messages
5757
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