Deprecated API

Contents

• Interfaces
• Classes
• Record Classes
• Methods
• Constructors

Deprecated Interfaces

Interface	Description
io.modelcontextprotocol.spec.ClientMcpTransport	This class will be removed in 0.9.0. Use McpClientTransport.
io.modelcontextprotocol.spec.ServerMcpTransport	This class will be removed in 0.9.0. Use McpServerTransport.

Deprecated Classes

Class	Description
io.modelcontextprotocol.server.McpServer.AsyncSpec
io.modelcontextprotocol.server.McpServer.SyncSpec
io.modelcontextprotocol.server.transport.HttpServletSseServerTransport	This class will be removed in 0.9.0. Use HttpServletSseServerTransportProvider. The transport handles two types of endpoints: SSE endpoint (/sse) - Establishes a long-lived connection for server-to-client events Message endpoint (configurable) - Handles client-to-server message requests Features: Asynchronous message handling using Servlet 6.0 async support Session management for multiple client connections Graceful shutdown support Error handling and response formatting
io.modelcontextprotocol.server.transport.StdioServerTransport	This method will be removed in 0.9.0. Use StdioServerTransportProvider instead.
io.modelcontextprotocol.spec.DefaultMcpSession	This method will be removed in 0.9.0. Use McpClientSession instead

Deprecated Record Classes

Record Class	Description
io.modelcontextprotocol.server.McpServerFeatures.AsyncPromptRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.AsyncPromptSpecification.
io.modelcontextprotocol.server.McpServerFeatures.AsyncResourceRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.AsyncResourceSpecification.
io.modelcontextprotocol.server.McpServerFeatures.AsyncToolRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.AsyncToolSpecification.
io.modelcontextprotocol.server.McpServerFeatures.SyncPromptRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.SyncPromptSpecification.
io.modelcontextprotocol.server.McpServerFeatures.SyncResourceRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.SyncResourceSpecification.
io.modelcontextprotocol.server.McpServerFeatures.SyncToolRegistration	This class is deprecated and will be removed in 0.9.0. Use McpServerFeatures.SyncToolSpecification.

Deprecated Methods

Method	Description
io.modelcontextprotocol.client.McpClient.async(ClientMcpTransport)	This method will be removed in 0.9.0. Use McpClient.async(McpClientTransport)
io.modelcontextprotocol.client.McpClient.sync(ClientMcpTransport)	This method will be removed in 0.9.0. Use McpClient.sync(McpClientTransport)
io.modelcontextprotocol.server.McpAsyncServer.addPrompt(McpServerFeatures.AsyncPromptRegistration)	This method will be removed in 0.9.0. Use McpAsyncServer.addPrompt(McpServerFeatures.AsyncPromptSpecification).
io.modelcontextprotocol.server.McpAsyncServer.addResource(McpServerFeatures.AsyncResourceRegistration)	This method will be removed in 0.9.0. Use McpAsyncServer.addResource(McpServerFeatures.AsyncResourceSpecification).
io.modelcontextprotocol.server.McpAsyncServer.addTool(McpServerFeatures.AsyncToolRegistration)	This method will be removed in 0.9.0. Use McpAsyncServer.addTool(McpServerFeatures.AsyncToolSpecification).
io.modelcontextprotocol.server.McpAsyncServer.createMessage(McpSchema.CreateMessageRequest)	This will be removed in 0.9.0. Use McpAsyncServerExchange.createMessage(McpSchema.CreateMessageRequest).
io.modelcontextprotocol.server.McpAsyncServer.getClientCapabilities()	This will be removed in 0.9.0. Use McpAsyncServerExchange.getClientCapabilities().
io.modelcontextprotocol.server.McpAsyncServer.getClientInfo()	This will be removed in 0.9.0. Use McpAsyncServerExchange.getClientInfo().
io.modelcontextprotocol.server.McpAsyncServer.listRoots()	This will be removed in 0.9.0. Use McpAsyncServerExchange.listRoots().
io.modelcontextprotocol.server.McpAsyncServer.listRoots(String)	This will be removed in 0.9.0. Use McpAsyncServerExchange.listRoots(String).
io.modelcontextprotocol.server.McpServer.async(ServerMcpTransport)	This method will be removed in 0.9.0. Use McpServer.async(McpServerTransportProvider) instead.
io.modelcontextprotocol.server.McpServer.sync(ServerMcpTransport)	This method will be removed in 0.9.0. Use McpServer.sync(McpServerTransportProvider) instead.
io.modelcontextprotocol.server.McpSyncServer.addPrompt(McpServerFeatures.SyncPromptRegistration)	This method will be removed in 0.9.0. Use McpSyncServer.addPrompt(McpServerFeatures.SyncPromptSpecification).
io.modelcontextprotocol.server.McpSyncServer.addResource(McpServerFeatures.SyncResourceRegistration)	This method will be removed in 0.9.0. Use McpSyncServer.addResource(McpServerFeatures.SyncResourceSpecification).
io.modelcontextprotocol.server.McpSyncServer.addTool(McpServerFeatures.SyncToolRegistration)	This method will be removed in 0.9.0. Use McpSyncServer.addTool(McpServerFeatures.SyncToolSpecification).
io.modelcontextprotocol.server.McpSyncServer.createMessage(McpSchema.CreateMessageRequest)	This method will be removed in 0.9.0. Use McpSyncServerExchange.createMessage(McpSchema.CreateMessageRequest).
io.modelcontextprotocol.server.McpSyncServer.getClientCapabilities()	This method will be removed in 0.9.0. Use McpSyncServerExchange.getClientCapabilities().
io.modelcontextprotocol.server.McpSyncServer.getClientInfo()	This method will be removed in 0.9.0. Use McpSyncServerExchange.getClientInfo().
io.modelcontextprotocol.server.McpSyncServer.listRoots()	This method will be removed in 0.9.0. Use McpSyncServerExchange.listRoots().
io.modelcontextprotocol.server.McpSyncServer.listRoots(String)	This method will be removed in 0.9.0. Use McpSyncServerExchange.listRoots(String).
io.modelcontextprotocol.spec.McpTransport.connect(Function<Mono<McpSchema.JSONRPCMessage>, Mono<McpSchema.JSONRPCMessage>>)	This is only relevant for client-side transports and will be removed from this interface in 0.9.0.

Deprecated Constructors

Constructor	Description
io.modelcontextprotocol.client.McpSyncClient(McpAsyncClient)	This method will be removed in 0.9.0. Use McpClient.sync(McpClientTransport) to obtain an instance.