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EverythingServer.Core

This is the core library containing all the shared MCP server handlers (tools, prompts, resources) used by both the HTTP and stdio implementations of the EverythingServer sample.

What's Inside

This library contains:

  • Tools: Various example tools demonstrating different MCP capabilities

    • AddTool: Simple addition operation
    • AnnotatedMessageTool: Returns annotated messages
    • EchoTool: Echoes input back to the client
    • LongRunningTool: Demonstrates long-running operations with progress reporting
    • PrintEnvTool: Prints environment variables
    • SampleLlmTool: Example LLM sampling integration
    • TinyImageTool: Returns image content

  • Prompts: Example prompts showing argument handling

    • SimplePromptType: Basic prompt example
    • ComplexPromptType: Prompt with multiple arguments

  • Resources: Example resources with subscriptions

    • SimpleResourceType: Dynamic resource with URI template matching

  • Background Services: For managing subscriptions and logging

    • SubscriptionMessageSender: Sends periodic updates to subscribed resources
    • LoggingUpdateMessageSender: Sends periodic logging messages at different levels

  • Extension Method: AddEverythingMcpHandlers to configure all handlers in one call

Usage

Reference this project from your MCP server implementation (HTTP or stdio) and call the extension method:

builder.Services
    .AddMcpServer()
    .WithHttpTransport() // or WithStdioServerTransport()
    .AddEverythingMcpHandlers(subscriptions);

See the EverythingServer.Http and EverythingServer.Stdio projects for complete examples.