Tip: Claude Code v2.1.117 MCP _meta Annotation Unlocks 500K-Character Tool Results

Releasebot·medium signal

A buried but high-impact change in v2.1.117: MCP tool results can now override the default size limit via _meta["anthropic/maxResultSizeChars"] annotation, supporting up to 500K characters. Previously, large results like database schemas, GraphQL introspection, or API specs were silently truncated. If you run MCP servers that return large structured data, implement this annotation to pass full results through. This also fixes unnecessary config disk writes on every skill invocation that caused corruption on Windows.