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 v2.1.248 Home All releases olderv2.1.247 v2.1.250newer
Claude Code v2.1.248

Config values declared through a typed schema, with a three-state boolean

Under the hood
Useful3 Signal3
Configuration

Config values now parse through a typed schema that can tell "off" apart from "never set".

What

Several hundred environment and config values are now declared with typed constructors instead of ad-hoc parsing. One of them, a three-state boolean, returns true, false, or nothing at all when the variable is unset, so a setting that is explicitly off can be told apart from one that was never set and should defer to a remote or policy default.

Details
  • The other constructors cover strings, integers and enumerations; the string coercion turns text into a boolean, and the enumeration trims the value and rejects anything not on its list.
Evidence

triBool: () => f(),

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 →