Koskamo

CardNexus MCP

An official MCP server operated by CardNexus that enables AI assistants to search trading card prices, build shopping carts, manage user inventories, and value collections across multiple TCGs like Pokemon, Magic, and Yu-Gi-Oh! by integrating directly with the CardNexus marketplace.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

CardNexus MCP logo, by CardNexusVendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-11-01Operated by CardNexus
MCP endpoint (Streamable HTTP)
https://mcp.cardnexus.com/mcp
Vendor documentation

What you can do with it

  • Find the cheapest copy of a card across sellers
  • Build a shopping cart for a full decklist
  • Value a user's collection by game
  • Check price history and market trends

Source and maintenance

Vendor evidenceRegistry 1.0.2
mcp-registry: com.cardnexus/mcp@1.0.2Project website

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
995 ms
95th percentile latency
995 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 995 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http cardnexus-mcp https://mcp.cardnexus.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add cardnexus-mcp --url https://mcp.cardnexus.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cardnexus-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "cardnexus-mcp": {
      "url": "https://mcp.cardnexus.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "cardnexus-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.cardnexus.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cardnexus-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "cardnexus-mcp": {
      "type": "http",
      "url": "https://mcp.cardnexus.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http cardnexus-mcp https://mcp.cardnexus.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "cardnexus-mcp": {
      "url": "https://mcp.cardnexus.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "cardnexus-mcp": {
      "serverUrl": "https://mcp.cardnexus.com/mcp"
    }
  }
}

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