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package:dart_mcp v0.3.0

02 Jul 20:55
@jakemac53 jakemac53
dart_mcp-v0.3.0
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package:dart_mcp v0.3.0 Latest
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  • Added error checking to required fields of all Request subclasses so that
    they will throw helpful errors when accessed and not set.
  • Added enum support to Schema.
  • Add more detail to type validation errors.
  • Remove some duplicate validation errors, errors are only reported for the
    leaf nodes and not all the way up the tree.
    • Deprecated a few validation error types as a part of this, including
      propertyNamesInvalid, propertyValueInvalid, itemInvalid and
      prefixItemInvalid.
  • Added a custom validation error type.
  • Breaking: Auto-validate schemas for all tools by default. This can be
    disabled by passing validateArguments: false to registerTool.
  • Updates to the latest MCP spec, 2025-06-08
    • Adds support for Elicitations to allow the server to ask the user questions.
    • Adds ResourceLink as a tool return content type.
    • Adds support for structured tool output.
  • Breaking: Change MCPClient.connectStdioServer signature to accept stdin
    and stdout streams instead of starting processes itself. This enables custom
    process spawning (such as using package:process), and also enables the client
    to run in browser environments.
  • Fixed a problem where specifying --log-file would cause the server to stop
    working.
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package:dart_mcp v0.2.2

18 Jun 17:39
@jakemac53 jakemac53
dart_mcp-v0.2.2
4ca0ff1
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package:dart_mcp v0.2.2
  • Refactor ClientImplementation and ServerImplementation to the shared
    Implementation type to match the spec. The old names are deprecated but will
    still work until the next breaking release.
  • Add clientInfo field to MCPServer, assigned during initialization.
  • Move the done future from the ServerConnection into MCPBase so it is
    available to the MPCServer class as well.
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package:dart_mcp v0.2.1

23 May 19:28
@jakemac53 jakemac53
dart_mcp-v0.2.1
e04e501
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package:dart_mcp v0.2.1
  • Fix the protocolLogSink support when using MCPClient.connectStdioServer.
  • Update workflow example to show thinking spinner and input and output token
    usage.
  • Update file system example to support relative paths.
  • Fix a bug in notification handling where leaving off the parameters caused a
    type exception.
  • Added --help, --log, and --model flags to the workflow example.
  • Fixed a bug where the examples would only connect to a server with the latest
    protocol version.
  • Handle failed calls to listRoots in the RootsTrackingSupport mixin more
    gracefully. Previously this would leave the roots future hanging
    indefinitely, but now it will log an error and set the roots to empty.
  • Added validation for Schema extension.
  • Fixed an issue where getting the type of a Schema with a null type would
    throw.
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package:dart_mcp v0.2.0

05 May 15:13
@jakemac53 jakemac53
dart_mcp-v0.2.0
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package:dart_mcp v0.2.0
  • Support protocol version 2025-03-26.
    • Adds support for AudioContent.
    • Adds support for ToolAnnotations.
    • Adds support for ProgressNotification messages.
  • Save the ServerCapabilities object on the ServerConnection class to make
    it easier to check the capabilities of the server.
  • Add default version negotiation logic.
    • Save the negotiated ProtocolVersion in a protocolVersion field for both
      MCPServer and the ServerConnection classes.
    • Automatically disconnect from servers if version negotiation fails.
  • Added support for adding and listing ResourceTemplates.
    • Handlers have to handle their own matching of templates.
  • Added a RootsTrackingSupport server mixin which can be used to keep an
    updated list of the roots set by the client.
  • Added default throttling with a 500ms delay for
    ResourceListChangedNotifications and ResourceUpdatedNotifications. The
    delay can be modified by overriding
    ResourcesSupport.resourceUpdateThrottleDelay.
  • Add Sink<String> protocolLogSink parameters to server constructor and client
    connection methods, which can be used to capture protocol messages for
    debugging purposes.
  • Only send notifications if the peer is still connected. Fixes issues where
    notifications are delayed due to throttling and the client has since closed.
  • Breaking: Fixed paginated result subtypes to use nextCursor instead of
    cursor as the key for the next cursor.
  • Breaking: Change the ProgressNotification.progress and
    ProgressNotification.total types to num instead of int to align with the
    spec.
  • Breaking: Change the protocolVersion string to a ProtocolVersion enum,
    which has all supported versions and whether or not they are supported.
  • Breaking: Change InitializeRequest and InitializeResult to take a
    ProtocolVersion instead of a string.
  • Breaking: Change the InitializeResult's instructions to String? to reflect
    that not all servers return instructions.
  • Breaking: Change MCPBase to accept a StreamChannel<String> instead of
    a Peer, and construct its own Peer.
  • Breaking: Add protocolLogSink optional parameter to connect methods on
    MCPClient.
  • Breaking: Move channel parameter on MCPServer.new to a positional
    parameter for consistency.
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package:dart_mcp v0.1.0

11 Apr 20:59
@jakemac53 jakemac53
dart_mcp-v0.1.0
c446518
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package:dart_mcp v0.1.0
  • Initial release, supports all major MCP functionality for both clients and
    servers, at protocol version 2024-11-05.
  • APIs may change frequently until the 1.0.0 release based on feedback and
    needs.
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