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 v2.1.219 Home All releases olderv2.1.218 v2.1.220newer
Claude Code v2.1.219

Pinned memories are injected into the session

Not switched on
Useful3 Signal4
Memory Notable not in their notes

Adding pinned: true to a memory file's frontmatter would apply it to every session automatically.

Pinned-memory scanning and injection are gated on tengu_stone_shell with a false fallback and suppressed by CLAUDE_COWORK_MEMORY_INDEX_CONTENT.

Feature flag
tengu_stone_shell Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.219: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.219. It isn't a statement about your account. What a flag value here can and cannot tell you

pinned: trueCLAUDE_COWORK_MEMORY_INDEX_CONTENT
What

Memory files whose frontmatter carries pinned: true are injected so they apply to every session rather than only when retrieved.

Details
  • Pinned files are scanned, sorted by mtime, capped in count, and truncated when oversized
  • Frontmatter documentation now describes the pinned field
  • New one-shot telemetry event tengu_memdir_pinned_injected reports pinned_file_count, pinned_injected_count, pinned_injected_chars, truncated and malformed counts
  • New scan-failure paths log "memory_scan_readdir_failed" and "pin_scan_failed"
  • Gated on tengu_stone_shell with fallback false, and suppressed entirely when CLAUDE_COWORK_MEMORY_INDEX_CONTENT is set
Evidence

tengu_memdir_pinned_injected

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

See this entry in the whole of v2.1.219 →