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Remediation Guide: modelcontextprotocol/java-sdk

Date: 2026-02-23 Branch: main (SDK version: 1.1.0-SNAPSHOT, latest release: 1.0.0 GA) Current Tier: 2

The SDK now meets all Tier 2 requirements. The path to Tier 1 has three remaining blockers.

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MCP SDK Tier Audit: modelcontextprotocol/java-sdk

Date: 2026-02-23 Branch: main SDK Version: 1.1.0-SNAPSHOT (latest release: 1.0.0 GA) Conformance Suite Version: 0.1.15 Auditor: mcp-sdk-tier-audit skill (automated + subagent evaluation)

Tier Assessment: Tier 2

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package dev.jedrzejczyk.reactorlab;

import java.util.List;

import reactor.core.publisher.Flux;
import reactor.core.scheduler.Schedulers;

public class WrapAroundExercise {

	public static void main(String[] args) {

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    @Test
    void testMDC() {
        Logger log = LoggerFactory.getLogger("test");

        Hooks.enableAutomaticContextPropagation();

        // To deal with the entire MDC (if we ensured no third-party code modifies it):
        // ContextRegistry.getInstance().registerThreadLocalAccessor(new MdcAccessor());

        // To deal with an individual key in the MDC:

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@BenchmarkMode({Mode.AverageTime})
@Warmup(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS)
@Fork(value = 1)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Benchmark)
public class MonoOptionalBenchmark {

	private static final Throwable EXCEPTION = new RuntimeException() {
		@Override