Source Intelligence
Follow Discord

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→
Claude Code v2.1.221

Telemetry values are validated before being sent

Under the hood
Useful1 Signal0
Telemetry

Unexpected telemetry values are replaced with a placeholder instead of being sent raw.

What

Several event properties now pass through pattern or allowlist validators that substitute nonconforming instead of forwarding an unexpected raw value.

Details
  • Validated: currency in the extra-usage dialogs, evaluator model name in compaction events, fork label in tengu_forked_agent_default_turns_exceeded, and the attach via value.
  • tengu_mcp_list_paginated gained a source dimension, defaulting to "pages".
  • tengu_headless_mcp_prewait gained waitForDeferrable and deadlineMs.
Evidence

tengu_forked_agent_default_turns_exceeded

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 →