| Filename | Latest commit message | Latest commit date |
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cdda68577c#196 Update build configuration and workflows for enhanced local publishing and sample builds - Add `mavenLocal()` to repository configuration in sample projects. - Update dependencies to distinguish between `mcp.kotlin.client` and `mcp.kotlin.server`. - Include `JAVA_OPTS` for optimized memory usage in GitHub workflow. - Enhance build workflow to include local publishing and build steps for sample projects. - Add package-lock.json for Kotlin JS/WASM Store - Switch to SNAPSHOT versions by default ## Motivation and Context #196 Samples MUST be validated as part of the build ## How Has This Been Tested? ```sh ./gradlew :kotlin-sdk-core:publishToMavenLocal ./gradlew :kotlin-sdk-client:publishToMavenLocal ./gradlew :kotlin-sdk-server:publishToMavenLocal ( cd ./samples/kotlin-mcp-client && ./../../gradlew clean build ) ( cd ./samples/kotlin-mcp-server && ./../../gradlew clean build ) ( cd ./samples/weather-stdio-server && ./../../gradlew clean build ) ``` ## Breaking Changes <!-- Will users need to update their code or configurations? --> ## Types of changes <!-- What types of changes does your code introduce? Put an `x` in all the boxes that apply: --> - [ ] Bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Documentation update ## Checklist <!-- Go over all the following points, and put an `x` in all the boxes that apply. --> - [x] I have read the [MCP Documentation](https://modelcontextprotocol.io) - [ ] My code follows the repository's style guidelines - [x] New and existing tests pass locally - [ ] I have added appropriate error handling - [ ] I have added or updated documentation as needed ## Additional context <!-- Add any other context, implementation notes, or design decisions --> |
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MCP Kotlin Server Sample
A sample implementation of an MCP (Model Communication Protocol) server in Kotlin that demonstrates different server configurations and transport methods for both JVM and WASM targets.
Features
- Multiple server operation modes:
- Standard I/O server (JVM only)
- SSE (Server-Sent Events) server with plain configuration (JVM, WASM)
- SSE server using Ktor plugin (JVM, WASM)
- Standard I/O server (JVM only)
- Multiplatform support
- Built-in capabilities for:
- Prompts management
- Resources handling
- Tools integration
Getting Started
Running the Server
You can run the server on the JVM or using Kotlin/WASM on Node.js.
JVM:
To run the server on the JVM (defaults to SSE mode with Ktor plugin on port 3001):
./gradlew runJvm
WASM:
To run the server using Kotlin/WASM on Node.js (defaults to SSE mode with Ktor plugin on port 3001):
./gradlew wasmJsNodeDevelopmentRun
Connecting to the Server
For servers on JVM or WASM:
- Start the server
- Use the MCP inspector to connect to
http://localhost:<port>/sse
Server Capabilities
- Prompts: Supports prompt management with list change notifications
- Resources: Includes subscription support and list change notifications
- Tools: Supports tool management with list change notifications
Implementation Details
The server is implemented using:
- Ktor for HTTP server functionality
- Kotlin coroutines for asynchronous operations
- SSE for real-time communication
- Standard I/O for command-line interface
- Common Kotlin code shared between JVM and WASM targets