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.
Corrupt prompt-history lines are skipped rather than breaking history
You'll notice
Useful3Signal1
Sessions
One corrupt line in your prompt history no longer breaks history loading.
What's wrong with this entry?
Anonymous. No account, no email.
What
Each saved prompt-history line is checked against a schema; bad lines are dropped with a log entry naming the field and problem instead of derailing history loading.
Details
Logs "Skipping malformed history line" and classifies each failure as a shape rejection or a parse failure.
Pasted-content attachments that had to be dropped from an otherwise valid line are counted.
Evidence
Skipping malformed history line
Strings lifted out of the shipped bundle, so the claim above can be checked against them.