Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.251 Home All releases olderv2.1.250
Claude Code v2.1.251

Bridge child sessions record the account that launched them

Not switched on
Useful1 Signal3
Remote Bridge

Bridge worker sessions record which account launched them, but the bridge is off.

Owner stamping for bridge children is wired but unreachable while the bridge stays off.

Feature flag
tengu_ccr_bridge On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.251: on

Read once, for one account on one subscription tier, against v2.1.251. It isn't a statement about your account. What a flag value here can and cannot tell you

What

A session spawned as a bridge worker now has the launching account and organization identifiers stamped into its environment by the supervisor, and reads them back at startup to record who owns it. The bridge feature itself is off in this build, so nothing reaches this path by default.

Details
  • only applies to workers whose environment kind is bridge
  • the whole bridge feature is gated on tengu_ccr_bridge, which defaults to off
Evidence

CLAUDE_CODE_BRIDGE_OWNER_ACCOUNT_UUID: te?.accountUuid

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.251 →