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

Tool and vendor code moved out of lazy wrappers

Under the hood
Useful1 Signal0
Startup

Lots of tool and cloud-identity code now loads at startup rather than on demand.

What

Many parts of the build, including the Glob, Grep and ExitPlanMode tool definitions, agent and skill frontmatter checks, the Bedrock, Foundry and Azure identity clients and WSL mount detection, are now declared at the top of the bundle instead of inside lazily-initialized wrappers. Tool descriptions and error text are unchanged, so the only effect is on startup evaluation order.

Evidence

search file contents with regex (ripgrep)

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 →