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 releases Home olderv2.1.28 v2.1.30newer

Claude Code v2.1.29

3 entries read diff v2.1.28 → v2.1.29 Markdown

This is a maintenance rebuild with no functional changes. The version was bumped from 2.1.28 to 2.1.29 with an updated build timestamp (approximately 90 minutes after the previous build).

Find
Pick an entry · j / k steps through
1 entry

Changesopen

#

None. This release contains only:

  • Version number increment (2.1.28 → 2.1.29)
  • Updated build timestamp (2026-01-31T18:41:01Z → 2026-01-31T20:12:07Z)
  • Build path references updated to new build number
1 entry

Notesopen

#

This appears to be a republish or rebuild of the previous version without any code modifications. The file sizes are identical (16,682,625 bytes) and all differences are limited to version identifiers and build metadata embedded in the source.

Verbatim
Official · Anthropic

Anthropic’s official release notes

Published verbatim by Anthropic for v2.1.29. Text is unmodified from the upstream changelog. Everything else on this page came out of the bundle instead, which is why the two lists don't match.

  • Fixed startup performance issues when resuming sessions that have saved_hook_context
System prompt

The system prompt was not captured for this release, so this page cannot say whether it moved.