uiMeta

A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

Releases whose published page names uiMeta.

1. v2.1.280 22 Sep 2026
   MCP tools can be hidden from the model and marked as account-memory-backed

   MCP tools can now be hidden from the model and flagged as backed by account memory

   found in this entry's text

2. v2.1.280 22 Sep 2026
   New MCP tool uiMeta passthrough from _meta

   MCP tools can now pass a small ui-related metadata block through to the tool definition

   named in this entry, found in this entry's text

The earliest release whose published evidence quoted uiMeta was v2.1.280, 22 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.