95 lines
3.8 KiB
C#
95 lines
3.8 KiB
C#
using System.ComponentModel;
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using System.Text.Json.Serialization;
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using ModelContextProtocol.Server;
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namespace ModelContextProtocol.Protocol;
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/// <summary>
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/// Represents the capabilities that a server supports.
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/// </summary>
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/// <remarks>
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/// <para>
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/// Server capabilities define the features and functionality available when clients connect.
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/// These capabilities are advertised to clients during the initialize handshake.
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/// </para>
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/// <para>
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/// See the <see href="https://github.com/modelcontextprotocol/specification/blob/main/schema/">schema</see> for details.
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/// </para>
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/// </remarks>
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public sealed class ServerCapabilities
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{
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/// <summary>
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/// Gets or sets experimental, non-standard capabilities that the server supports.
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/// </summary>
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/// <remarks>
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/// <para>
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/// The <see cref="Experimental"/> dictionary allows servers to advertise support for features that are not yet
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/// standardized in the Model Context Protocol specification. This extension mechanism enables
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/// future protocol enhancements while maintaining backward compatibility.
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/// </para>
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/// <para>
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/// Values in this dictionary are implementation-specific and should be coordinated between client
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/// and server implementations. Clients should not assume the presence of any experimental capability
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/// without checking for it first.
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/// </para>
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/// </remarks>
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[JsonPropertyName("experimental")]
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public IDictionary<string, object>? Experimental { get; set; }
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/// <summary>
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/// Gets or sets a server's logging capability for sending log messages to the client.
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/// </summary>
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[JsonPropertyName("logging")]
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[Obsolete(Obsoletions.DeprecatedLogging_Message, DiagnosticId = Obsoletions.Deprecated_DiagnosticId, UrlFormat = Obsoletions.Deprecated_Url)]
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public LoggingCapability? Logging { get; set; }
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/// <summary>
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/// Gets or sets a server's prompts capability for serving predefined prompt templates that clients can discover and use.
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/// </summary>
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[JsonPropertyName("prompts")]
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public PromptsCapability? Prompts { get; set; }
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/// <summary>
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/// Gets or sets a server's resources capability for serving predefined resources that clients can discover and use.
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/// </summary>
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[JsonPropertyName("resources")]
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public ResourcesCapability? Resources { get; set; }
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/// <summary>
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/// Gets or sets a server's tools capability for listing tools that a client is able to invoke.
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/// </summary>
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[JsonPropertyName("tools")]
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public ToolsCapability? Tools { get; set; }
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/// <summary>
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/// Gets or sets a server's completions capability for supporting argument auto-completion suggestions.
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/// </summary>
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[JsonPropertyName("completions")]
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public CompletionsCapability? Completions { get; set; }
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/// <summary>
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/// Gets or sets optional MCP extensions that the server supports.
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/// </summary>
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/// <remarks>
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/// <para>
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/// Keys are extension identifiers in reverse domain notation with an extension name
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/// (e.g., <c>"io.modelcontextprotocol/apps"</c>), and values are per-extension settings
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/// objects. An empty object indicates support with no additional settings.
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/// </para>
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/// <para>
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/// Extensions provide a framework for extending the Model Context Protocol while maintaining
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/// interoperability. Servers advertise extension support via this field during the initialization handshake.
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/// </para>
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/// </remarks>
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[JsonIgnore]
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public IDictionary<string, object>? Extensions
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{
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get => ExtensionsCore;
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set => ExtensionsCore = value;
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}
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// See ExperimentalInternalPropertyTests.cs before modifying this property.
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[JsonInclude]
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[JsonPropertyName("extensions")]
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internal IDictionary<string, object>? ExtensionsCore { get; set; }
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}
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