Changelog

0.1.0

Added

• Initial release, split from the mcp package.
• MCP.Types: Core MCP data types (Content, Resource, Tool, Prompt, Capability, etc.)
• MCP.Protocol: JSON-RPC 2.0 message wrappers and all client/server request/response types.
• MCP.Aeson: Custom Aeson parsing options.

Fixed

• Make params optional in JSONRPCRequest, JSONRPCNotification, ViaJSONRPCRequest, and ViaJSONRPCNotification FromJSON instances. JSON-RPC 2.0 allows omitting the params field; previously a missing params caused requests to be silently misparsed as notifications (losing the id and never receiving a response).