apify/mcp-client-capabilities

npm install mcp-client-capabilities
pip install mcp-client-capabilities

Usage

• •import { mcpClients } from 'mcp-client-capabilities'; then read mcpClients['claude-ai']
• •from mcp_client_capabilities import mcp_clients
• •Fetch the raw mcp-clients.json for other languages

Key features

• ✓mcp-clients.json listing clients keyed by clientInfo.name with title, url, protocolVersion and capability fields
• ✓Capabilities modeled on MCP ClientCapabilities/ServerCapabilities types (resources, prompts, tools, elicitation, sampling, roots, completions, logging)
• ✓TypeScript type safety with exported McpClientRecord and ClientsIndex types
• ✓Records the latest known publicly available release per client name

Best for

MCP server authors who want to understand which client features are safe to expose.

Caveats

• ⚠Servers must always prioritize capabilities from the client initialize request over this package
• ⚠Information is stale if a client's protocolVersion does not match the JSON record
• ⚠Not an MCP server itself; it is a data/type package