Reminder text can be latched into a conversation once per model from server config or an env var.
A per-model reminder attachment reads a server-supplied model-pattern map or CLAUDE_CODE_TOASTY_THIMBLE; with neither, nothing is injected.
What's wrong with this entry?
The reminder described above is a new attachment type that latches into a conversation once per model, taking its text from a server-supplied map of model pattern to reminder text or from CLAUDE_CODE_TOASTY_THIMBLE. With neither present, nothing is injected.
- Injection is reported with the model name and whether the text came from the environment or the server.
- It writes a marker entry into the transcript when sent.
- The reminder is filtered out of the prompt when the turn is not a human turn.
- None of this machinery existed in the previous release.
tengu_toasty_thimble_applied
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.234
Malformed model responses are repaired instead of crashing the session
Both mention conversation