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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.259 ·

CCR client can hold event uploads while no one is subscribed

Event uploads can be held while a session has no subscribers, but the hold duration comes from a remote flag defaulting to zero.

TierNothing to try yethow much it should matter to you
Useful3my rating, 1 to 5
Signal4worth watching, 1 to 5
AreaRemote Controlwhat it touches
KindIn Developmentin v2.1.259,
Nothing to try yet No documentation found

Event uploads can be held while a session has no subscribers, but the hold duration comes from a remote flag defaulting to zero.

The CCRClient's durable and internal event uploaders can now hold event uploads when a session has no subscribers. A new noSubscriberUploadHoldMs setting, set via setNoSubscriberUploadHoldMs, works with a holdMaxItems: 50 cap on the internal-event uploader; releasing a hold logs telemetry event ccr_no_subscriber_hold with lane, reason, held_events, and held_ms. The hold duration comes from remote flag tengu_ccr_no_subscriber_hold_ms and defaults to 0 (also forced to 0 for outbound-only sessions), so the hold is inactive unless the server pushes a positive value.

Read from
Names in the bundlenoSubscriberUploadHoldMstengu_ccr_no_subscriber_hold_mssetNoSubscriberUploadHoldMs
Feature flag
tengu_ccr_no_subscriber_hold_ms Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.259: no gate table built for this version

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.259. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Flag reading moved The flag server now returns 10000 for tengu_ccr_no_subscriber_hold_ms, 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 null for tengu_ccr_no_subscriber_hold_ms, 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 10000 for tengu_ccr_no_subscriber_hold_ms, 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.

See this across every release →

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: tengu_ccr_no_subscriber_hold_ms

See this entry in the whole of v2.1.259 →

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