tengu_refusal_fallback_triggered
A Claude Code feature flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
If compaction's model is refused, it retries on an allowed fallback instead of failing outright.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.246.
In the changelogs
2Releases whose published page names tengu_refusal_fallback_triggered.
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v2.1.274
Silent, server-armed fallback lane for refused/failed model turns
A hidden, server-controlled fallback path can now retry refused model turns under different, less visible telemetry names
gate cited by this entry, found in this entry's text
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v2.1.246
Compaction retries on a fallback model when the summarizer is refused
If compaction's model is refused, it retries on an allowed fallback instead of failing outright.
gate cited by this entry, found in this entry's text
Gate readings
0No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.