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

| Module | Java Required | | ------- | -------------- | | Nacos-Server/Nacos-Console| Java 17 | | Nacos-Client | Java 8 | | Nacos-Maintainer-Client | Java 8 |

New Contributors

• @backstraw made their first contribution in https://github.com/alibaba/nacos/pull/13575
• @yuzhiping made their first contribution in https://github.com/alibaba/nacos/pull/13568
• @lakeoffaith made their first contribution in https://github.com/alibaba/nacos/pull/13412
• @lingyufei made their first contribution in https://github.com/alibaba/nacos/pull/13583
• @weyuhui110 made their first contribution in https://github.com/alibaba/nacos/pull/13584
• @misselvexu made their first contribution in https://github.com/alibaba/nacos/pull/13604
• @FangYuan33 made their first contribution in https://github.com/alibaba/nacos/pull/13611
• @howa118 made their first contribution in https://github.com/alibaba/nacos/pull/13656
• @GoofySatoshi made their first contribution in https://github.com/alibaba/nacos/pull/13674

Full Changelog: https://github.com/alibaba/nacos/compare/3.0.2...3.0.3