What it is
A new dialog warns some users that auto mode is still billing them for classifier requests
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.278.
Presence across releases
1Build by build
1One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
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.
Gate readings
1| Release | Resolved | This account | Anonymous | Compiled default |
|---|---|---|---|---|
| v2.1.278 read on another version | Not enough to say | no value returned | no value returned | on |
Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.
Names beside it
Every feature flag in the inventory starting tengu_velvet, up to twelve of them.
tengu_velvet_anchorNo description from anybody. never mined
tengu_velvet_cascadeWhich models get the simple system prompt is now decided locally, not by remote config. v2.1.138
tengu_velvet_falcon_modelNo description from anybody. v2.1.163
tengu_velvet_hammerNo description from anybody. v2.1.166
tengu_velvet_harbor_owlA startup banner pitching Claude Enterprise to org admins exists but no one sees it by default. v2.1.238
tengu_velvet_ibisMAX_MCP_OUTPUT_TOKENS is still honoured first, but it's no longer sanity-checked as a number. v2.1.138
tengu_velvet_malletAn alternate prompt wording for two tools exists but stays off unless you set an environment variable. v2.1.166
tengu_velvet_mothNo description from anybody. v2.1.138
tengu_velvet_staticNo description from anybody. v2.1.138
tengu_velvet_tideWhich models get the simple system prompt is now decided locally, not by remote config. v2.1.210
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.