You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.257,
What probably matters to youSection of the release
Tool result messages now include a resource_links field that collects the raw resource_link content blocks returned by an MCP tool (up to 50 links or 64 KiB), as a sibling to _meta on tool_use_result.mcpMeta. This lets a host render referenced files directly instead of parsing the [Resource link: NAME] URI text line; it is absent for subagent tool results. Both live MCP tool calls and MCP task-based tool calls now capture and pass through resourceLinks/resource_links, including in the background-task terminal summary.
