Follow Discord
Sweep 29 Sep 2026 · 18:10Z Build v2.1.285 506 read Stable v2.1.280 Latest v2.1.285 Next v2.1.285 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.285 ·

A request can now list the built-in tools

One of Claude Code's requests now includes a list of built-in tools when one is provided

Under the hood Internal Changes
JSON All of v2.1.285
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
Internal ChangesKind: in v2.1.285,
Internal ChangesSection of the release
What

One of the requests Claude Code sends now includes a builtin_tools list whenever a list of built-in tools is supplied and not empty.

Why

This may let a caller declare or limit the built-in tools available in a session.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear which request carries this list or what supplies it.

See this entry in the whole of v2.1.285 →

Feedback