# Changelog
All notable changes to this project are documented in this file.
## [0.7.0](https://github.com/cloudwalk/hermes-mcp/compare/v0.6.0...v0.7.0) (2025-06-09)
### Features
* allow json schema fields on tools/prompts definition ([#99](https://github.com/cloudwalk/hermes-mcp/issues/99)) ([0345f12](https://github.com/cloudwalk/hermes-mcp/commit/0345f122484a0169645c5da07e50c2d64fd6c5f5))
## [0.6.0](https://github.com/cloudwalk/hermes-mcp/compare/v0.5.0...v0.6.0) (2025-06-09)
### Features
* allow customize server registry impl ([#94](https://github.com/cloudwalk/hermes-mcp/issues/94)) ([f3ac087](https://github.com/cloudwalk/hermes-mcp/commit/f3ac08749a7c361466a7a619f9782e8d8706a7b6))
* mcp high level server components definition ([#91](https://github.com/cloudwalk/hermes-mcp/issues/91)) ([007f41d](https://github.com/cloudwalk/hermes-mcp/commit/007f41d33874fd9f1b5e340ecbe16317dc3576b7))
* mcp server handlers refactored ([#92](https://github.com/cloudwalk/hermes-mcp/issues/92)) ([e213e04](https://github.com/cloudwalk/hermes-mcp/commit/e213e046b1360b24ff9e42835cdf80f5fe2ae4fa))
### Bug Fixes
* correctly handle mcp requests on phoenix apps ([#88](https://github.com/cloudwalk/hermes-mcp/issues/88)) ([09f4235](https://github.com/cloudwalk/hermes-mcp/commit/09f42359f0daac694013f0be4f6a74de2be7f4ff)), closes [#86](https://github.com/cloudwalk/hermes-mcp/issues/86)
### Miscellaneous Chores
* upcate automatic version ([#98](https://github.com/cloudwalk/hermes-mcp/issues/98)) ([0c08233](https://github.com/cloudwalk/hermes-mcp/commit/0c08233371338af24ea66047b4e1a8e9fa5cb055))
### Code Refactoring
* tests ([#93](https://github.com/cloudwalk/hermes-mcp/issues/93)) ([ca31feb](https://github.com/cloudwalk/hermes-mcp/commit/ca31febee7aec1d45dcb32398b33228d1399ae39))
## [0.5.0](https://github.com/cloudwalk/hermes-mcp/compare/v0.4.1...v0.5.0) (2025-06-05)
### Features
* client support new mcp spec ([#83](https://github.com/cloudwalk/hermes-mcp/issues/83)) ([73d14f7](https://github.com/cloudwalk/hermes-mcp/commit/73d14f77522cef0f7212230c05cdac23ee2d93e2))
* enable log disabling ([#78](https://github.com/cloudwalk/hermes-mcp/issues/78)) ([fa1453f](https://github.com/cloudwalk/hermes-mcp/commit/fa1453fee9b015c0ad7f9ac223749a9c9f1fcf6a))
* low level genservy mcp server implementation (stdio + stremable http) ([#77](https://github.com/cloudwalk/hermes-mcp/issues/77)) ([e6606b4](https://github.com/cloudwalk/hermes-mcp/commit/e6606b4d66a2d7ddeb6c32e0041c22d4f0036ac5))
* mvp higher level mcp server definition ([#84](https://github.com/cloudwalk/hermes-mcp/issues/84)) ([a5fec1c](https://github.com/cloudwalk/hermes-mcp/commit/a5fec1c976595c3363d4eec83e0cbc382eac9207))
### Code Refactoring
* base mcp server implementation correctly uses streamable http ([#85](https://github.com/cloudwalk/hermes-mcp/issues/85)) ([29060fd](https://github.com/cloudwalk/hermes-mcp/commit/29060fd2d2e383c58c727a9085b30162c6b8179a))
## [0.4.0](https://github.com/cloudwalk/hermes-mcp) - 2025-05-06
### Added
- Implemented WebSocket transport (#70)
- Emit `telemetry` events (#54)
- Implement client feature `completion` request (#72)
- Implement client feature roots, server requests (#73)
## [0.3.12](https://github.com/cloudwalk/hermes-mcp) - 2025-04-24
### Fixed
- Correctly handles "nested" timeouts (genserver vs MCP) (#71)
## [0.3.11](https://github.com/cloudwalk/hermes-mcp) - 2025-04-17
### Added
- Improved core library logging and added verbosity level on interactive/CLI (#68)
## [0.3.10](https://github.com/cloudwalk/hermes-mcp) - 2025-04-17
### Fixed
- Handle SSE ping and reconnect events from server (#65)
## [0.3.9](https://github.com/cloudwalk/hermes-mcp) - 2025-04-15
### Fixed
- Improved and simplified SSE endpoint event URI merging (#64)
### Added
- Added internal client/transport state inspection on CLI/mix tasks (#61)
## [0.3.8](https://github.com/cloudwalk/hermes-mcp) - 2025-04-10
### Added
- Created `Operation` struct to standardize client API calls (#56)
- Fixed ERTS version to avoid release errors
### Fixed
- Resolved client timeout confusion by standardizing timeout handling (#42)
## [0.3.7](https://github.com/cloudwalk/hermes-mcp) - 2025-04-01
### Fixed
- Client reinitialization from interactive CLI (#55)
## [0.3.6](https://github.com/cloudwalk/hermes-mcp) - 2025-03-28
### Added
- New roadmap and protocol update proposal (#53)
- Added documentation for the 2025-03-26 protocol update
## [0.3.5](https://github.com/cloudwalk/hermes-mcp) - 2025-03-25
### Documentation
- Added Roadmap to README (#47)
## [0.3.4](https://github.com/cloudwalk/hermes-mcp) - 2025-03-20
### Added
- `help` command and flag on the interactive CLI (#37)
- improve SSE connection status on interactive task/cli (#37)
## [0.3.3](https://github.com/cloudwalk/hermes-mcp) - 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](https://github.com/cloudwalk/hermes-mcp) - 2025-03-19
### Added
- Ship static binaries to use hermes-mcp as standalone application
## [0.3.1](https://github.com/cloudwalk/hermes-mcp) - 2025-03-19
### Added
- Ship interactive mix tasks `stdio.interactive` and `sse.interactive` to test MCP servers
## [0.3.0](https://github.com/cloudwalk/hermes-mcp) - 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](https://github.com/cloudwalk/hermes-mcp) - 2025-03-12
### Added
- Enhanced SSE transport with graceful shutdown capabilities (#25)
- Improved SSE streaming with automatic reconnection handling (#25)
## [0.2.2](https://github.com/cloudwalk/hermes-mcp) - 2025-03-05
### Added
- Support for multiple concurrent client <> transport pairs (#24)
- Improved client resource management
## [0.2.1](https://github.com/cloudwalk/hermes-mcp) - 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](https://github.com/cloudwalk/hermes-mcp) - 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](https://github.com/cloudwalk/hermes-mcp) - 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
