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

Telemetry environment encoder no longer deferred

Under the hood
Useful1 Signal0
Telemetry

The environment telemetry encoder is built at load time; the fields collected are unchanged.

What

The encoder for environment telemetry (platform, architecture, CI, WSL version, Linux distribution, shell and the rest) is now built at load time rather than on demand. The fields collected are unchanged.

Evidence

claude_code_remote_session_id

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

See this entry in the whole of v2.1.248 →