Mirror of https://github.com/modelcontextprotocol/java-sdk — The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI
- Java 100%
| Filename | Latest commit message | Latest commit date |
|---|---|---|
c1cde20002- Replace McpError with appropriate standard exceptions (IllegalArgumentException, IllegalStateException) for validation errors - Change tool/prompt registration to replace existing items instead of rejecting duplicates with warningsi - Change addTool behavior to replace existing tools instead of throwing errors - Change addPrompt() to allow replacing existing prompts with warning instead of throwing error - Make removal operations idempotent - log warnings instead of throwing errors for non-existent items - Change removePrompt() to log warning instead of throwing error for non-existent prompts - Change removeTool() to gracefully handle non-existent tools with warnings instead of errors - Add listTools() and listPrompts() methods to all server variants (async, sync, stateless) - Add listTools() method to all server classes for tool enumeration - Add listPrompts() method to all server implementations for retrieving registered prompts - Improve error construction using McpError.builder() pattern for protocol-specific errors - Update error handling in session classes to properly propagate McpError JSON-RPC errors - Use proper error codes (INVALID_PARAMS) for prompt not found scenarios - Update tests to reflect new lenient behavior for duplicate registrations and removals - Add aggregateExceptionMessages() utility method utility to aggregate the exception chains - Update McpServerSession and McpStreamableServerSession to use the aggregated errors in the json-rpc-error data section This change makes the MCP server APIs more resilient and user-friendly by using appropriate exception types, supporting item replacement, and providing listing capabilities while maintaining backward compatibility. Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com> |
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| mcp | ||
| mcp-bom | ||
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| mcp-json | ||
| mcp-json-jackson2 | ||
| mcp-spring | ||
| mcp-test | ||
| .gitattributes | ||
| .gitignore | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| migration-0.8.0.md | ||
| mvnw | ||
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| pom.xml | ||
| README.md | ||
| SECURITY.md | ||
MCP Java SDK
A set of projects that provide Java SDK integration for the Model Context Protocol. This SDK enables Java applications to interact with AI models and tools through a standardized interface, supporting both synchronous and asynchronous communication patterns.
📚 Reference Documentation
MCP Java SDK documentation
For comprehensive guides and SDK API documentation
- Features - Overview the features provided by the Java MCP SDK
- Architecture - Java MCP SDK architecture overview.
- Java Dependencies / BOM - Java dependencies and BOM.
- Java MCP Client - Learn how to use the MCP client to interact with MCP servers.
- Java MCP Server - Learn how to implement and configure a MCP servers.
Spring AI MCP documentation
Spring AI MCP extends the MCP Java SDK with Spring Boot integration, providing both client and server starters. Bootstrap your AI applications with MCP support using Spring Initializer.
Development
Building from Source
./mvnw clean install -DskipTests
Running Tests
To run the tests you have to pre-install Docker and npx.
./mvnw test
Contributing
Contributions are welcome! Please follow the Contributing Guidelines.
Team
- Christian Tzolov
- Dariusz Jędrzejczyk
Links
License
This project is licensed under the MIT License.