diff --git a/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStatelessServerTransport.java b/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStatelessServerTransport.java
index 40767f416..20a953dbb 100644
--- a/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStatelessServerTransport.java
+++ b/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStatelessServerTransport.java
@@ -4,16 +4,8 @@
 
 package io.modelcontextprotocol.server.transport;
 
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.PrintWriter;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import io.modelcontextprotocol.json.McpJsonMapper;
-
 import io.modelcontextprotocol.common.McpTransportContext;
+import io.modelcontextprotocol.json.McpJsonMapper;
 import io.modelcontextprotocol.server.McpStatelessServerHandler;
 import io.modelcontextprotocol.server.McpTransportContextExtractor;
 import io.modelcontextprotocol.spec.McpError;
@@ -25,8 +17,14 @@
 import jakarta.servlet.http.HttpServlet;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import reactor.core.publisher.Mono;
 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+
 /**
  * Implementation of an HttpServlet based {@link McpStatelessServerTransport}.
  *
@@ -52,12 +50,15 @@ public class HttpServletStatelessServerTransport extends HttpServlet implements
 
 	private final String mcpEndpoint;
 
-	private McpStatelessServerHandler mcpHandler;
+	private volatile McpStatelessServerHandler mcpHandler;
 
-	private McpTransportContextExtractor<HttpServletRequest> contextExtractor;
+	private final McpTransportContextExtractor<HttpServletRequest> contextExtractor;
 
 	private volatile boolean isClosing = false;
 
+	private volatile GetHandler getHandler = (request, response) -> response
+		.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
+
 	private HttpServletStatelessServerTransport(McpJsonMapper jsonMapper, String mcpEndpoint,
 			McpTransportContextExtractor<HttpServletRequest> contextExtractor) {
 		Assert.notNull(jsonMapper, "jsonMapper must not be null");
@@ -74,11 +75,28 @@ public void setMcpHandler(McpStatelessServerHandler mcpHandler) {
 		this.mcpHandler = mcpHandler;
 	}
 
+	@Override
+	public McpStatelessServerHandler getMcpHandler() {
+		return mcpHandler;
+	}
+
 	@Override
 	public Mono<Void> closeGracefully() {
 		return Mono.fromRunnable(() -> this.isClosing = true);
 	}
 
+	public void setGetHandler(GetHandler getHandler) {
+		Assert.notNull(getHandler, "getHandler must not be null");
+
+		this.getHandler = getHandler;
+	}
+
+	public interface GetHandler {
+
+		void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException;
+
+	}
+
 	/**
 	 * Handles GET requests - returns 405 METHOD NOT ALLOWED as stateless transport
 	 * doesn't support GET requests.
@@ -97,7 +115,7 @@ protected void doGet(HttpServletRequest request, HttpServletResponse response)
 			return;
 		}
 
-		response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
+		getHandler.doGet(request, response);
 	}
 
 	/**
diff --git a/mcp-core/src/main/java/io/modelcontextprotocol/spec/McpStatelessServerTransport.java b/mcp-core/src/main/java/io/modelcontextprotocol/spec/McpStatelessServerTransport.java
index d1c2e5206..b64a05c2a 100644
--- a/mcp-core/src/main/java/io/modelcontextprotocol/spec/McpStatelessServerTransport.java
+++ b/mcp-core/src/main/java/io/modelcontextprotocol/spec/McpStatelessServerTransport.java
@@ -4,15 +4,17 @@
 
 package io.modelcontextprotocol.spec;
 
-import java.util.List;
-
 import io.modelcontextprotocol.server.McpStatelessServerHandler;
 import reactor.core.publisher.Mono;
 
+import java.util.List;
+
 public interface McpStatelessServerTransport {
 
 	void setMcpHandler(McpStatelessServerHandler mcpHandler);
 
+	McpStatelessServerHandler getMcpHandler();
+
 	/**
 	 * Immediately closes all the transports with connected clients and releases any
 	 * associated resources.
diff --git a/mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/server/transport/WebFluxStatelessServerTransport.java b/mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/server/transport/WebFluxStatelessServerTransport.java
index 400be341e..75fe4950b 100644
--- a/mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/server/transport/WebFluxStatelessServerTransport.java
+++ b/mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/server/transport/WebFluxStatelessServerTransport.java
@@ -4,8 +4,8 @@
 
 package io.modelcontextprotocol.server.transport;
 
-import io.modelcontextprotocol.json.McpJsonMapper;
 import io.modelcontextprotocol.common.McpTransportContext;
+import io.modelcontextprotocol.json.McpJsonMapper;
 import io.modelcontextprotocol.server.McpStatelessServerHandler;
 import io.modelcontextprotocol.server.McpTransportContextExtractor;
 import io.modelcontextprotocol.spec.McpError;
@@ -40,12 +40,14 @@ public class WebFluxStatelessServerTransport implements McpStatelessServerTransp
 
 	private final RouterFunction<?> routerFunction;
 
-	private McpStatelessServerHandler mcpHandler;
+	private volatile McpStatelessServerHandler mcpHandler;
 
-	private McpTransportContextExtractor<ServerRequest> contextExtractor;
+	private final McpTransportContextExtractor<ServerRequest> contextExtractor;
 
 	private volatile boolean isClosing = false;
 
+	private volatile GetHandler getHandler = (request) -> ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED).build();
+
 	private WebFluxStatelessServerTransport(McpJsonMapper jsonMapper, String mcpEndpoint,
 			McpTransportContextExtractor<ServerRequest> contextExtractor) {
 		Assert.notNull(jsonMapper, "jsonMapper must not be null");
@@ -66,6 +68,11 @@ public void setMcpHandler(McpStatelessServerHandler mcpHandler) {
 		this.mcpHandler = mcpHandler;
 	}
 
+	@Override
+	public McpStatelessServerHandler getMcpHandler() {
+		return mcpHandler;
+	}
+
 	@Override
 	public Mono<Void> closeGracefully() {
 		return Mono.fromRunnable(() -> this.isClosing = true);
@@ -87,8 +94,20 @@ public RouterFunction<?> getRouterFunction() {
 		return this.routerFunction;
 	}
 
+	public interface GetHandler {
+
+		Mono<ServerResponse> doGet(ServerRequest request);
+
+	}
+
+	public void setGetHandler(GetHandler getHandler) {
+		Assert.notNull(getHandler, "getHandler must not be null");
+
+		this.getHandler = getHandler;
+	}
+
 	private Mono<ServerResponse> handleGet(ServerRequest request) {
-		return ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED).build();
+		return getHandler.doGet(request);
 	}
 
 	private Mono<ServerResponse> handlePost(ServerRequest request) {
diff --git a/mcp-spring/mcp-spring-webmvc/src/main/java/io/modelcontextprotocol/server/transport/WebMvcStatelessServerTransport.java b/mcp-spring/mcp-spring-webmvc/src/main/java/io/modelcontextprotocol/server/transport/WebMvcStatelessServerTransport.java
index 4223084ff..055885bb9 100644
--- a/mcp-spring/mcp-spring-webmvc/src/main/java/io/modelcontextprotocol/server/transport/WebMvcStatelessServerTransport.java
+++ b/mcp-spring/mcp-spring-webmvc/src/main/java/io/modelcontextprotocol/server/transport/WebMvcStatelessServerTransport.java
@@ -44,12 +44,14 @@ public class WebMvcStatelessServerTransport implements McpStatelessServerTranspo
 
 	private final RouterFunction<ServerResponse> routerFunction;
 
-	private McpStatelessServerHandler mcpHandler;
+	private volatile McpStatelessServerHandler mcpHandler;
 
-	private McpTransportContextExtractor<ServerRequest> contextExtractor;
+	private final McpTransportContextExtractor<ServerRequest> contextExtractor;
 
 	private volatile boolean isClosing = false;
 
+	private volatile GetHandler getHandler = (request) -> ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED).build();
+
 	private WebMvcStatelessServerTransport(McpJsonMapper jsonMapper, String mcpEndpoint,
 			McpTransportContextExtractor<ServerRequest> contextExtractor) {
 		Assert.notNull(jsonMapper, "jsonMapper must not be null");
@@ -70,6 +72,11 @@ public void setMcpHandler(McpStatelessServerHandler mcpHandler) {
 		this.mcpHandler = mcpHandler;
 	}
 
+	@Override
+	public McpStatelessServerHandler getMcpHandler() {
+		return mcpHandler;
+	}
+
 	@Override
 	public Mono<Void> closeGracefully() {
 		return Mono.fromRunnable(() -> this.isClosing = true);
@@ -91,8 +98,20 @@ public RouterFunction<ServerResponse> getRouterFunction() {
 		return this.routerFunction;
 	}
 
+	public interface GetHandler {
+
+		ServerResponse doGet(ServerRequest request);
+
+	}
+
+	public void setGetHandler(GetHandler getHandler) {
+		Assert.notNull(getHandler, "getHandler must not be null");
+
+		this.getHandler = getHandler;
+	}
+
 	private ServerResponse handleGet(ServerRequest request) {
-		return ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED).build();
+		return getHandler.doGet(request);
 	}
 
 	private ServerResponse handlePost(ServerRequest request) {