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Release v2.0.0 (#1758)

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Jeff Handley 2026-07-28 14:06:46 -07:00 • committed by GitHub
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10
docs/concepts/tools/tools.md
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@ -139,6 +139,16 @@ public static IEnumerable<ContentBlock> DescribeImage()
}
```
#### Structured content
Set `UseStructuredContent = true` on <xref:ModelContextProtocol.Server.McpServerToolAttribute> or
<xref:ModelContextProtocol.Server.McpServerToolCreateOptions> to advertise an output schema and
serialize the return value into <xref:ModelContextProtocol.Protocol.CallToolResult.StructuredContent>.
The output schema may be any JSON Schema 2020-12 document. Non-object return values are represented
directly, so a tool returning `72` produces `structuredContent: 72`, not
`structuredContent: { "result": 72 }`. Clients should read the value according to the advertised
output schema rather than assuming a `result` wrapper.
#### Content annotations
Any content block can include <xref:ModelContextProtocol.Protocol.Annotations> to provide hints about the intended audience and priority: