Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release
What
MCP (Model Context Protocol, the standard Claude Code uses to talk to external tool servers) tool listings now carry a new accountMemory flag. It is set for:
the built-in dynamic memory server
tools with specific names such as memory_read and memory_write
tools from trusted SDK configs
When a tool marked this way throws an error during a tool call, Claude Code no longer logs or throws the raw error text. Instead it replaces the message with a placeholder showing only the character count.
Why
Memory tools can return the contents of a user's memory file in their answers, so an error message from one of them could leak that file's contents into logs. Redacting the text keeps that private content out of logs while still surfacing that an error occurred.
