Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.248,
What probably matters to youSection of the release
What
Instead of one hand-written cache per flag, there is now a shared map that remembers the first value each flag returned and keeps it for the whole process, so a remote-config change mid-session cannot flip it. Three flags use it, including tengu_slate_anchor, new in this build and compiled on.
tengu_slate_anchor is read once inside the dynamic /loop tool's prompt, to ignore cache overage when working out the delay bounds shown to the model.
Compiled values are only the fallback; the live value comes from the server.
Evidence
tengu_slate_anchor
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Read from
Feature flag
tengu_slate_anchorGate removed from the code
This release deleted the gate from the code while it was still reading on for the account this site reads, so the code path no longer asks a flag before running.
This account: on · anonymous baseline: on · compiled default in v2.1.248: not a boolean we can read
tengu_tab_read_sepOff in both readings
The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.248: not a boolean we can read
Flag reading movedThe flag server now returns on for tengu_slate_anchor, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_slate_anchor, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Gate removed from the codev2.1.248 removed the tengu_slate_anchor gate from the code while it was still reading on for the account this site reads.The code path no longer asks a flag before it runs.
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeChanged /loop: self-paced dynamic mode and the no-prompt autonomous default are now always available, including on Bedrock/Vertex/Foundry
