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 v2.1.247 Home All releases olderv2.1.246 v2.1.248newer
Claude Code v2.1.247

Remote memory snapshots move from a transport callback to a conversation attachment

Under the hood
Useful2 Signal3
Memory

Remote memory snapshots now arrive as a conversation attachment rather than a transport callback.

Feature flag
tengu_misty_anchor 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 v2.1.247: on

Read once, for one account on one subscription tier, against v2.1.247. It isn't a statement about your account. What a flag value here can and cannot tell you

What

Memory context for remote cowork sessions is no longer delivered through a handler on the streaming transport. It is fetched separately and inserted into the conversation as an attachment shown as a meta user message. When the server withdraws a snapshot, the attachment arrives empty and the model is told to disregard it. Nothing here is reachable in a normal local session.

Details
  • Requires CLAUDE_CODE_ENTRYPOINT to be one of remote_cowork, remote_cowork_trigger, remote_api or remote_trigger, and the gate tengu_misty_anchor, whose compiled fallback is false. With no server saying otherwise, it stays off.
  • The attachment type is cowork_memory_context; a withdrawn snapshot carries null content.
  • Five new outcomes are logged: fetched, unchanged, none, malformed and gated.
Evidence

The previous memory snapshot was withdrawn; disregard it.

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 v2.1.247 →