You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.305,
ImprovementsSection of the release
What
Claude Code can offer its tools to other programs. When one of those tool calls fails with an error that carries extra details, the error result now includes them in a _meta field. Before, the result held only the error flag and its message.
Why
Programs calling these tools can read structured information about what went wrong instead of only an error message.
