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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.

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Claude Code v2.1.248

Thin clients can ask the worker for its model catalog

Not switched on
Useful2 Signal3
Sessions not in their notes

Thin clients can ask a remote worker which models it offers.

list_models requires the client to advertise a modelCatalog capability.

list_models
What

A new control message, list_models, lets a client running against a remote worker fetch the list of selectable models rather than computing one locally, because the worker's provider and settings decide what is available. It is gated on the client advertising a modelCatalog capability.

Details
  • Only reachable in remote thin-client sessions; a normal local session picks models the usual way.
Evidence

Requests the worker's selectable model catalog.

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 v2.1.248 →