A whole lower-priority subsystem with a hidden /low-priority command needs a server arm and config with enabled true.
What
When you hit the 5-hour usage limit, Claude Code can offer to keep working at reduced priority against your weekly allowance instead of making you wait, with a hidden /low-priority command, an entry on the usage-limit dialog, a waiting state, and its own retry and stop-reason accounting. Nothing appears unless the server both puts your account in the treatment arm through a response header and ships a config object named tengu_toasty_breeze with enabled set to true. That config defaults to empty, so enabled is false and the whole subsystem is off for everyone in this build.
Details
- The offer header is
anthropic-ratelimit-unified-slow-offerand reads eithertreatmentorcontrol; companion headers-retry-after,-max-wait,-budget-utilizationand-statuscarry the retry delay, the ceiling on waiting, how much of the budget is spent, and the current state. - There is no local flag for the header side of it, so the server alone decides whether the offer exists; the hidden
/low-prioritycommand is gated separately on the client-enabled flag from the config object. - The command is registered hidden, so it never shows in the command list, and its description reads "Continue now at lower priority after reaching your session limit; run again to stop".
- Choosing the menu entry records a selection event, and when the server has not made the offer the menu answers "Lower-priority mode isn't available right now."
- Four pieces of copy come from the same config and can be replaced by the server: the menu label, a notice line, a status line, and the banner shown while waiting.
- A
low_priority_waitingmessage kind carries the waiting state alongside those status and wait banners. - 429 responses that report a busy slot are retried with jitter, and the mode records why it stopped: weekly allowance exhausted, budget, maximum wait exceeded, wall clock and others.
- Six telemetry events cover the flow: offer capable, offer shown, accepted, request, wait, ended; API-error telemetry gained a marker for requests made on the low-priority path.
- None of these strings or the
tengu_toasty_breezekey exist in v2.1.238.
Evidence
Continue now at lower priority, You've used this week's lower-priority allowance, /${wlr} to continue now at lower priority (counts toward your weekly limit), Lower-priority mode isn't available right now.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Names in the bundle/low-priority
Flag reading moved
The flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, 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 moved
The flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, 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 moved
The flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, 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 moved
The flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, 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 moved
The flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, 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 moved
The flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, 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 moved
The flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, 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 moved
The flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, 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.
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this build
New in this build: tengu_toasty_breeze