package:dart_mcp v0.5.0

• Initial support for protocol version 2025-11-25.
  • Added support for Icons in Implementation, Tool, Resource, ResourceTemplate, and Prompt.
  • Added support for ToolChoice in sampling CreateMessageRequest.
  • Added support for URL-based elicitations in ElicitRequest.
    • Separated ElicitationSupport into ElicitationFormSupport and
      ElicitationUrlSupport mixins, which will affect which capabilities
      your server advertises. The original ElicitationSupport mixin is now
      deprecated (and is an alias for ElicitationFormSupport).
    • Added onElicitationComplete extension getter to ElicitRequest, which
      will listen for notifications/elicitation/complete notifications.
    • If a tool call fails with the urlElicitationRequired error code, and
      the client supports URL based elicitations, the client will automatically
      handle the elicitation and retry the tool call if the elicitation
      succeeds.
  • Added an McpErrorCodes namespace for MCP error codes. For now only
    contains the urlElicitationRequired error code.
  • Added examples for URL based elicitations, including handling
    urlElicitationRequired errors.
  • Added description field to Implementation.
  • Does not add support for Tasks yet.
  • Added support for EnumSchema subtypes, matching the spec. This includes
    multi select enums and enums with titles. Validation is also supported.
  • Added Meta? meta param to ElicitRequest.
• Added ConstSchema type for constant values, with validation.
• BREAKING:
  • Change many fields of ResourceLink to be nullable, and their associated
    parameters to be optional. This brings us in line with the specification.
  • The WithElicitationHandler interface is now private and implemented by
    the ElicitationFormSupport and ElicitationUrlSupport mixins.
  • Added a required ServerConnection server parameter to the
    ElicitationSupport.handleElicitation method.
  • ElicitRequest.requestedSchema is now nullable (for url mode).
  • EnumSchema is now a union type with 4 subtypes, matching the spec changes.