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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 v2.1.234 Home All releases olderv2.1.233 v2.1.235newer
Claude Code v2.1.234

SDK transport can forward a host control request, but nothing calls it

Under the hood
Useful1 Signal3
SDK

The SDK transport can forward a host-originated control request, but nothing calls the method.

A host control-request forwarding method exists on the SDK transport with no callers.

What

The SDK transport gained a method that forwards a control request originating from the host under its existing request id, rejecting if an id is already pending. No code in this build calls it, so it is plumbing for a later change.

Details
  • The internal request sender now takes an options object carrying the request id, a teardown-abort flag, and a forwarded flag.
Evidence

a control request with this request_id is already pending

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

See this entry in the whole of v2.1.234 →