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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.227 ·

Cross-session file transfer is gated off with a specific message

Sending files between sessions now fails with a clear "not available in this session" message.

Nothing to try yet In Development
JSON All of v2.1.227
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cross-Session MessagingArea: what it touches
In DevelopmentKind: in v2.1.227,
In DevelopmentSection of the release

The file-transfer gate is off unless a server flag enables it, and refusals are logged as gated_off.

What

The tool that sends files between sessions now checks a capability gate before doing anything. When it is off it returns error code 9 with the message "Cross-session file transfer is not available in this session." and records telemetry with transport "gated_off" and zero files delivered. The gate is tengu_send_file, off unless the server enables it, and the surrounding capability check must also pass.

Details
  • in the previous build tengu_send_file was only a telemetry event name; both the gate and the unavailable message are new here
Evidence

Cross-session file transfer is not available in this session.

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Read from
Feature flag
tengu_send_file 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 v2.1.227: off

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 v2.1.227. It isn't a statement about your account. What a flag value here can and cannot tell you

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_send_file

See this entry in the whole of v2.1.227 →

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