Under the hood
Useful2 Signal2
Tools removed mid-conversation now get their own note telling Claude to disregard them.
What's wrong with this entry?
Anonymous. No account, no email.
What
The reminder Claude Code inserts about tools that are no longer usable was split apart. Tools lost because an MCP server disconnected get one wording; tools whose definitions were loaded earlier and then removed for any other reason get their own note telling the model to disregard those descriptions. Re-added tools are split the same way.
Details
- Previously all vanished tools shared one MCP-flavoured message, which read as wrong when the cause was not a disconnect.
Evidence
Definitions of the following tools were loaded earlier in this conversation and their source has since been removed.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.