mcp_server 0.1.2

Dart plugin for implementing Model Context Protocol (MCP) servers. Provides tools to build MCP servers that can expose data, functionality, and interaction patterns to LLM applications.

0.1.2

• Added
  • Full implementation of MCP protocol 2024-11-05
  • Sampling support with client request forwarding
  • Roots management for filesystem boundary control
  • Resource subscription system with updates notification
  • Resource caching mechanism for performance optimization
  • Operation cancellation support
  • Progress reporting for long-running operations
• Fixed
  • Protocol version negotiation now properly supports multiple versions
  • Type inconsistencies in model classes and JSON conversions
  • Ensured capabilities are properly exposed based on server configuration
• Improved
  • Error handling with standardized error codes
  • Session management for multiple client connections
  • server health monitoring and metrics tracking
  • Transport implementation with better CORS support
  • Added options to colorize logs and include timestamps for easier debugging

0.1.1

• SSE Endpoint Improvements
  • Added compatibility with MCP Inspector by sending initial SSE event in event: endpoint format
  • Ensured event: message usage for subsequent JSON-RPC data
• Logging and Debug Enhancements
  • Introduced optional debug function with adjustable log level
  • Removed excessive stderr.writeln calls, improving performance and clarity
• Authorization Logic Updates
  • Allows optional token-based authentication for SSE connections
  • Maintains session-based approach to restrict message endpoint usage
• Bug Fixes
  • Resolved SSE Body Timeout Error by flushing initial messages immediately
  • Ensured consistent CORS and OPTIONS handling for cross-origin requests
• Refactoring
  • Cleaned up code structure for better maintainability
  • Unified resource and prompt capabilities under standard JSON-RPC schema

0.1.0

• Initial release
• Created Model Context Protocol (MCP) implementation for Dart
• Features:
  • Create MCP servers with standardized protocol support
  • Expose data through Resources
  • Provide functionality through Tools
  • Define interaction patterns through Prompts
  • Multiple transport layers:
    • Standard I/O for local process communication
    • Server-Sent Events (SSE) for HTTP-based communication
  • Platform support: Android, iOS, web, Linux, Windows, macOS