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 v2.1.221 Home All releases olderv2.1.220 v2.1.222newer

Prompt history can be written to a record store instead of history.jsonl

Not switched on
Useful2 Signal2
Internals

Your prompt history could be saved to a record store instead of history.jsonl, but nothing uses it yet.

An alternate prompt-history writer exists alongside history.jsonl, with no confirmed caller in this build.

history.jsonl
What

The history save path can now append entries through a record-store writer rather than locking and appending to the config-directory history.jsonl.

Details
  • The store writer is an optional argument to the save call; when absent, the file path is used as before.
  • Failures on the new path report the same telemetry reason as file writes.
  • What supplies the store, and whether anything does in this build, could not be determined.
Evidence

history_save_write_failed

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

See this entry in the whole of v2.1.221 →