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 v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

Malformed-message reports say what shape arrived

Under the hood
Useful1 Signal1
Telemetry

Reports about malformed incoming messages now record the message's shape rather than a prose description.

What

When an inbound user message is dropped or repaired, the report now carries the message's wire shape and whether it had an event identifier, replacing a free-text English description of the problem.

Details
  • The same two fields appear on the telemetry event, on the structured log line, and in the debug output.
Evidence

cli_malformed_user_message

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

See this entry in the whole of v2.1.239 →