mcp-client-capabilities

About

This package strives to be the most up-to-date database of all Model Context Protocol (MCP) clients and their capabilities, to enable MCP servers understand what features an MCP client supports and how to respond to it in order to provide the best user and agent experience. Unfortunately, the MCP protocol capability negotiation during the initial handshake is not sufficient for that—see Background bellow for details.

In other words, this package is the programmatic version of the community MCP clients table.

This package provides a JSON file called mcp-clients.json that lists all known MCP clients, their metadata and capabilities. It's a single JSON file to make it easy for multiple…