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.
Prompt IDs attached to messages and request metadata
Under the hood
Useful2Signal3
Sessions
Prompt identifiers follow your message into transcripts and request metadata, stripped from some exports.
What's wrong with this entry?
Anonymous. No account, no email.
What
Each user prompt now carries an identifier that follows it into the message record, into queued and appended transcript entries, and into the metadata sent with the request. Some export paths strip it back out.
Evidence
promptId
Strings lifted out of the shipped bundle, so the claim above can be checked against them.