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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.

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Claude Code v2.1.228

Memory store requests moved to a new beta header value

You'll notice
Useful4 Signal4
Memory Notable

Memory store calls send a new beta header value, so update any proxy allowlists.

What

Requests to the memory store API now send the beta value agent-memory-2026-07-22 instead of managed-agents-2026-04-01. If your proxy, gateway or deployment allow-lists the old value for memory traffic, it needs updating.

Details
  • Covers create, retrieve, update, list and delete for both memories and memory stores.
  • The old value no longer appears on any memory store path; roughly 99 call sites now carry the new one.
  • Other managed-agent endpoints keep the older beta value.
Evidence

agent-memory-2026-07-22, managed-agents-2026-04-01

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

See this entry in the whole of v2.1.228 →