lightweight-component/aj-mcp

사이트맵 경량 Java MCP SDK

AJ-MCP는 Java용 경량 모델 콘텍스 프로토콜(MCP) SDK입니다. 그것은 작은, 직접 API 건물 MCP 클라이언트 및 서버, 특히 Java에 남아 있어야 기존 시스템 8 또는 봄 부트 2.x.

• Java 8 이상 지원 및 Spring Boot 2.x 지원
• 경량과 작은, Jackson JSON과 OkHttp로 주요 런타임 의존성.
• 사용하기 쉽고 확장, 예와 이중 언어 문서.
• STDIO, 레거시 HTTP / SSE 운송 및 스트리밍 HTTP를 지원합니다.
• MCP 프로토콜 개정 2024-11-05, 2025-03-26, 2025-06-18]를 버전 협상으로 구현합니다.
• 커버 도구, 리소스, 리소스 템플릿, 프롬프트, 완료, pagination, 구독, 취소, 로깅, 뿌리, 표본 추출 및 elicitation.

MCP SDK 구성 요소의 이러한 3 프로젝트를 확인:

독립적 인 AJ MCP 다음 프로젝트는 AJ Util을 사용하여 Java 8에서 2026-07-28를 대상으로합니다. 그것은 STDIO와 sessionless HTTP 어댑터와 코어 / 클라이언트 / 서버 모듈,이 레거시 SDK에서 분리.

• AJ MCP Common, AJ-MCP를 위한 Common library는 Model Context의 구현을 포함합니다. 의정서 및 몇몇 다른 일반적인

AJ-MCP A Lightweight Java MCP SDK

AJ-MCP is a lightweight Model Context Protocol (MCP) SDK for Java. It provides a small, direct API for building MCP clients and servers, especially for existing systems that must remain on Java 8 or Spring Boot 2.x.

• Supports Java 8 and above, and supports Spring Boot 2.x.
• Lightweight and small, with Jackson JSON and OkHttp as its main runtime dependencies.
• Easy to use and extend, with examples and bilingual documentation.
• Supports STDIO, the legacy HTTP/SSE transport, and Streamable HTTP.
• Implements MCP protocol revisions 2024-11-05, 2025-03-26, and 2025-06-18 with version negotiation.
• Covers tools, resources, resource templates, prompts, completion, pagination, subscriptions, cancellation, logging, roots, sampling, and elicitation.

Check out these three projects of MCP SDK components:

The independent AJ MCP Next project targets 2026-07-28 on Java 8 using AJ Util. It has core/client/server modules with STDIO and sessionless HTTP adapters, separate from this legacy SDK.

• AJ MCP Common, Common library for AJ-MCP, it contains the implementation of the Model Context Protocol and some other common classes.
• AJ MCP Client, MCP Client SDK.
• AJ MCP Server, MCP Server SDK.
• Samples for both client and server.
• Spring Streamable HTTP sample, with a dedicated StreamableHttpClientExample in samples/client (Java 8).

For further information, please refer to the User Manual website.

When to use AJ-MCP

AJ-MCP is intended for Java applications that need to expose existing business capabilities to AI clients, or consume MCP servers without upgrading the entire application stack. Typical uses include:

• wrapping an existing Java service as MCP tools, resources, or prompts;
• connecting a Java desktop or server application to a local STDIO MCP process;
• integrating MCP into Spring Boot 2.x or a Servlet-based application;
• supporting clients that negotiate different MCP protocol revisions.

JSON-RPC batch messages are intentionally not supported.

Modules