Sourced from com.alibaba.nacos:nacos-client's releases.

3.0.3(Aug 21th, 2025)

This version is mainly focuses on MCP ecosystem expansion and performance optimization while balancing developer experience and system robustness. And fix many bugs for the old version.

About the new MCP registry features, Nacos added dynamic management of MCP tools (auto-fetch during creation/update), supported importing HTTP transfer tools via Swagger API files, and enhanced security schema definitions and client-side AI interaction APIs. And introduced memory index to optimize MCP ID/name query performance, supports custom gRPC listening IP configuration, and added frontEndpointConfig for streamlined frontend integration.

For the System & Experience Improvements, Nacos refactored MCP management UI, optimized Docker port configuration hints, improved service creation workflows, and strengthened validations (e.g., username/password checks, pre-deletion table existence verification). And also enhanced MCP server query logic and error logs, standardized readiness API responses, and ensured SDK consistency in returning MCP IDs.

Detail Changes in 3.0.3 see:

Feature

#13441 Support add mcp tools when create mcp server. #13442 Support auto get mcp tools when create mcp server or update mcp server. #13455 Support Security Schema definition for mcp server. #13524#13683 Add client api for AI mcp. #13526 Support memory index for mcpId and mcpName to improve performence. #13527 ADD frontEndpointConfig into McpInfo. #13542 Support import mcp tools by swagger API file for http transfer to mcp server. #13549 Support specified grpc listen ip replace the 0.0.0.0.

Enhancement/Refactor

#13324 Add web hint when users use old way to access nacos console ui. #13437 Enhance the readiness API response code for v3 admin API. #13553 Ai maintainer sdk will return the mcpId when create new MCP Server. #13559 Enhance docker-desktop page export nacos ports configuration. #13565 Optimize error logs for MCP server not found scenario. #13585 Check if the table config_info_beta exists before deleting a BETA configuration. #13602 Enhance get the mcpserver logic to reduce the possible query mcp server after creating. #13625 Create user check username and password not blank. #13668#13702 Enhance and refactor console UI for MCP management. #13678 Create new service when create new version mcp server.

BugFix

#13367 Fix NPE problem for nacos-custom-environment-plugin. #13454 Fix logback 1.5+ will print hint and error when using spring cloud alibaba. #13458 Fix nacos start up failure when set functionMode is config or naming. #13468 Fix nacos config client can't fuzzy watch configuration by groupName. #13497 Fix service NullPointerException when getSpec(). #13522 Ldap related beans are loaded into Spring properly. #13523 Fix DefaultPushFuture do not cancel when ConnectionBusyExeception throwed. #13566 Fix the paging query exception of the mcp list. #13585 Fix can't delete beta configuration problem. #13600 Fix CloneConfig got 403 code when user has not source namespace writen authentication. #13614 Fix namespace is not converted correctly, unable to query the configuration through the HTTP configuration query API. #13628 Fix NPE problem when update instance metadata with null value. #13648 Fix Configuration Management Fuzzy Search not work for groupName.

Deployment Required

... (truncated)

• d14ae0c Develop release3.0.3 (#13729)
• 4f16a23 opt args use aggre options (#13727)
• 9f41549 Optimizing Swagger import using template-embedded parameters (#13726)
• f455b0d Optimize upload file (#13706)
• 3788cab add transport protocol for service ref and fix some ui bugs (#13702)
• bc0f7dc upgrade nacos logback adapter to 1.1.4. (#13700)
• dc3b2cb fix some bugs in ui (#13701)
• dbafe2d Try to fix unit test problem. (#13698)
• 08b4937 Support OpenApi 3.1 (#13692)
• b0dcfa3 fix ui bugs (#13689)
• Additional commits viewable in compare view

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