Specification
Specification
Overview

Overview

Protocol Revision: 2025-03-26

Client features provide additional capabilities that MCP clients can offer to servers to enhance functionality. These features are optional and depend on the specific implementation and use case.

Available Features

  • Roots - Filesystem root directory management
  • Sampling - LLM sampling/completions for server-initiated requests

These features enable clients to provide important context and capabilities to servers while maintaining security boundaries and user control.