Hosted MCP Catalog: Finding hosted MCP servers...

Reference guide for zero-setup hosted MCP servers that require no API keys, no local install, just point any MCP client at the URL.

Activation

Trigger	Status
User says "what MCP servers" or "find an MCP for"	ACTIVE
User says "hosted MCP" or "MCP catalog"	ACTIVE
User says "available MCP tools" or "list MCP servers"	ACTIVE
User wants to BUILD an MCP server	NOT this skill: use mcp-builder
User wants to configure local MCP	NOT this skill: check .mcp.json docs

Context Guard

• Do NOT use for building MCP servers (that's mcp-builder Pro skill)
• Do NOT use for local MCP server configuration
• Do NOT use for debugging MCP connection issues
• This skill ONLY helps discover and connect to hosted MCP endpoints

How Hosted MCP Works

Hosted MCP servers run remotely: no local install needed. Add the URL to your MCP client config and the tools are available immediately.

In Claude Code: add to .mcp.json:

{
  "mcpServers": {
    "server-name": {
      "type": "url",
      "url": "https://example.com/mcp"
    }
  }
}

In Claude Desktop: add to claude_desktop_config.json:

{
  "mcpServers": {
    "server-name": {
      "url": "https://example.com/mcp"
    }
  }
}

Catalog: Official Platform MCP Servers

These are maintained by major platforms and generally stable:

Server	URL	Tools	Use Case
Vercel	https://mcp.vercel.com	Deploy, logs, env vars, projects	Vercel deployment management
Supabase	https://mcp.supabase.com/mcp	DB queries, migrations, RLS	Database management
Sentry	https://mcp.sentry.dev/mcp	Issues, errors, performance	Error tracking
Stripe	https://mcp.stripe.com	Payments, customers, invoices	Payment processing
Linear	https://mcp.linear.app/mcp	Issues, projects, cycles	Project management
Slack	https://mcp.slack.com/mcp	Messages, channels, search	Team communication
Greptile	https://api.greptile.com/mcp	Codebase search, understanding	Code intelligence

Note: Most official servers require OAuth authentication on first use. Claude Code handles this automatically, you'll get a browser prompt to authorize.

How to Choose

When the user needs an MCP server, help them find the right one:

Step 1: Identify the need

User wants to...	Recommended MCP
Query a database	Supabase
Track errors/bugs	Sentry
Deploy code	Vercel
Process payments	Stripe
Manage issues/tickets	Linear
Send team messages	Slack
Search codebases	Greptile

Step 2: Add to config

Generate the .mcp.json entry for the chosen server:

{
  "mcpServers": {
    "<server-name>": {
      "type": "url",
      "url": "<server-url>"
    }
  }
}

Step 3: Test the connection

After adding, restart Claude Code and verify:

1. The server appears in the MCP tools list
2. Authentication completes (if required)
3. A simple tool call succeeds

Discovery Resources

When the catalog above doesn't cover the user's need:

Resource	URL	Description
Anthropic MCP Registry	https://github.com/modelcontextprotocol/servers	Official MCP server list
Smithery	https://smithery.ai	MCP server marketplace
MCP.so	https://mcp.so	Community MCP directory
Glama	https://glama.ai/mcp/servers	Curated MCP catalog

Output Template

MCP Server: [name]
URL: [endpoint]
Auth: [OAuth / API key / None]
Tools available: [list of key tools]
Config to add to .mcp.json:

{
  "mcpServers": {
    "[name]": {
      "type": "url",
      "url": "[endpoint]"
    }
  }
}

Restart Claude Code after adding.

Disambiguation

• "what MCP servers" / "find an MCP for" / "hosted MCP" = Hosted MCP Catalog
• "build an MCP server" / "create MCP tools" = mcp-builder (not this skill)
• "MCP not connecting" / "MCP error" = Debug directly (not this skill)
• "what tools do I have" = Check current MCP config (not this skill)

Level History

• Lv.1: Base: Hosted MCP server catalog with official platform endpoints, connection setup, discovery resources. (Origin: MemStack v3.5, Apr 2026)