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

Websocket permission prompts can hide the subprotocol list

You'll notice
Useful2 Signal2
Permissions

Websocket permission prompts can hide the subprotocol list and tell you to deny unless expected.

What

A permission prompt for a websocket tool call can now show a redacted placeholder in place of the actual subprotocol list, telling you it cannot be shown in full and to deny unless you were expecting it.

Details
  • Shown when the request payload marks the protocols as withheld; what sets that mark is decided upstream of the dialog.
Evidence

(cannot be shown in full — deny unless expected)

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

See this entry in the whole of v2.1.251 →