MCP tool results now pass through resourceLinks

Resource links returned by an MCP server are no longer dropped from the tool result.

You'll noticeTier: how much it should matter to you

2Useful: my rating, 1 to 5

2Signal: worth watching, 1 to 5

MCPArea: what it touches

Bug FixesKind: in v2.1.257, 01 Sep 26

Bug FixesSection of the release

MCP tool results now forward the resourceLinks field into mcpMeta alongside _meta and structuredContent, so resource links returned by MCP servers are no longer dropped from the tool result.

Read from

Names in the bundleresourceLinks

What the documentation says

Documented inclaude-code/agent-sdk/custom-tools

See this entry in the whole of v2.1.257 →

The build it came inv2.1.257

1 Sep 2026 · 505 entries, this one is #314.

Use it now45
You'll notice231
Nothing to try yet71
Under the hood158

Either side of it

v2.1.252Older
v2.1.258Newer

Open the release →

Names in this entry

settingresourceLinks
Resource links returned by an MCP server are no longer dropped from the tool result.
settingstructuredContent
Resource links returned by an MCP server are no longer dropped from the tool result.

Is this right?

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

v2.1.260 New RFC 8707 resource-indicator field for gateway OIDC inference auth
Both mention resource