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 v2.1.224 Home All releases olderv2.1.223 v2.1.225newer

Session history check reads raw bytes

You'll notice
Useful3 Signal2
Sessions

Checking whether a session has history is faster because it scans raw bytes instead of decoding everything.

What

Deciding whether a stored session has any history now scans raw record bytes for the user and assistant type markers instead of decoding every record to text, and pages more aggressively: 64KB for the first page, 4MB for later ones.

Details
  • The filesystem transcript locator gained an optional store backend, so it can also find transcripts held in a session store rather than only on disk.
Evidence

"type":"assistant"

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

See this entry in the whole of v2.1.224 →