Changelog

All notable changes to this project are documented in this file.

0.3.3 - 2025-03-20

Added

  • Client request cancellation support (#35)
  • Improved URI path handling for SSE transport (#36)
  • Enhanced interactive mix tasks for testing MCP servers (#34)

0.3.2 - 2025-03-19

Added

  • Ship static binaries to use hermes-mcp as standlone application

0.3.1 - 2025-03-19

Added

  • Ship interactive mix tasks stdio.interactive and sse.interactive to test MCP servers

0.3.0 - 2025-03-18

Added

  • Structured server-client logging support (#27)
  • Progress notification tracking (#26)
  • MCP domain model implementation (#28)
  • Comprehensive SSE unit tests (#20)
  • Centralized state management (#31)
  • Standardized error response handling (#32)

Fixed

  • Improved domain error handling (#33)

0.2.3 - 2025-03-12

Added

  • Enhanced SSE transport with graceful shutdown capabilities (#25)
  • Improved SSE streaming with automatic reconnection handling (#25)

0.2.2 - 2025-03-05

Added

  • Support for multiple concurrent client <> transport pairs (#24)
  • Improved client resource management

0.2.1 - 2025-02-28

Added

  • Support for custom base and SSE paths in HTTP/SSE client (#19)
  • Enhanced configuration options for SSE endpoints

0.2.0 - 2025-02-27

Added

  • Implemented HTTP/SSE transport (#7)
    • Support for server-sent events communication
    • HTTP client integration for MCP protocol
    • Streaming response handling

Documentation

  • Extensive guides and documentation improvements

0.1.0 - 2025-02-26

Added

  • Implemented STDIO transport (#1) for MCP communication

    • Support for bidirectional communication via standard I/O
    • Automatic process monitoring and recovery
    • Environment variable handling for cross-platform support
    • Integration test utilities in Mix tasks

  • Created stateful client interface (#6)

    • Robust GenServer implementation for MCP client
    • Automatic initialization and protocol handshake
    • Synchronous-feeling API over asynchronous transport
    • Support for all MCP operations (ping, resources, prompts, tools)
    • Proper error handling and logging
    • Capability negotiation and management

  • Developed JSON-RPC message parsing (#5)

    • Schema-based validation of MCP messages
    • Support for requests, responses, notifications, and errors
    • Comprehensive test suite for message handling
    • Encoding/decoding functions with proper validation

  • Established core architecture and client API

    • MCP protocol implementation following specification
    • Client struct for maintaining connection state
    • Request/response correlation with unique IDs
    • Initial transport abstraction layer

Documentation

  • Added detailed RFC document describing the library architecture
  • Enhanced README with project overview and installation instructions