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[Schema][Client][Server] Deprecate Roots, Sampling and Logging (SEP-2577) (#427)

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* [Schema][Client][Server] Deprecate Roots, Sampling and Logging (SEP-2577)

* Emit runtime deprecation notices and document the migration (SEP-2596)
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Christopher Hertel 2026-08-18 01:23:32 +02:00 • committed by GitHub
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3
src/Client/Handler/Request/SamplingCallbackInterface.php
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@ -18,6 +18,9 @@ use Mcp\Schema\Result\CreateSamplingMessageResult;
* Contract for callbacks used by SamplingRequestHandler.
*
* Implementations perform the actual LLM sampling when requested by the server.
*
* @deprecated since protocol revision 2026-07-28 (SEP-2577), earliest removal 2027-07-28.
* Integrate with an LLM provider's API directly instead.
*/
interface SamplingCallbackInterface
{