Add CallToolResult<T>, CallToolAsync<T>, and OutputSchema for tools returning CallToolResult#1272

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Copilot wants to merge 14 commits intomainfrom

copilot/support-output-schema-independently

Commits on Feb 14, 2026

Initial plan
Copilot
committed
Add OutputSchemaType to McpServerToolAttribute and OutputSchema to McpServerToolCreateOptions

Copilot
and
stephentoub
committed
Refactor OutputSchemaType check to use ??= pattern

Copilot
and
stephentoub
committed
Set UseStructuredContent=true when OutputSchemaType is set, remove DynamicallyAccessedMembers

Copilot
and
stephentoub
committed
Address review feedback: assert UseStructuredContent, use lambdas in tests, add using for JsonDocument

Copilot
and
stephentoub
committed
Merge branch 'main' into copilot/support-output-schema-independently
stephentoub
authored

Commits on Feb 18, 2026