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

New gate tengu_foamy_spring, on by default and fail-open

Not switched on
Useful1 Signal3
Feature Gates

A new gate is on by default and stays on even if its reader fails.

tengu_foamy_spring is fail-open with fallback true; what it guards is not visible.

What

A gate named tengu_foamy_spring is read through a small registry that holds one reader. It returns true when no reader is registered, treats anything other than an explicit false as enabled, and stays enabled if the reader throws. The compiled fallback is true, so it is live unless remote config turns it off. What it actually guards is not visible from the gate code itself.

Evidence

tengu_foamy_spring

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 →