CARDZ MCP

CARDZ MCP

Graded card prices inside your AI conversation

Free, read-only MCP server for graded TCG card data. PSA 10 prices, population, market cap and daily history for Pokémon and One Piece, no login required.

Endpoint	https://mcp.cardz.game/mcp
Transport	Streamable HTTP
Authentication	None
Pricing	Free
Website	https://mcp.cardz.game/
MCP Registry	io.github.cardzgame/cardz-mcp

claude mcp add --transport http cardz https://mcp.cardz.game/mcp

This repository is the public listing for the hosted remote server (README, server.json for the Official MCP Registry). Hosted remote server; source not public.

CARDZ MCP is a hosted, read-only MCP server that brings CardZ Marketcap's graded Pokémon and One Piece card data into any MCP-compatible AI conversation. It exposes three tools over Streamable HTTP — no API key, no account, no login.

What it does

search_cards finds candidate printings by name or collector number, returning language, set and canonical card-page links. get_card returns a single printing's dated PSA 10 reference price, PSA 10 population, market capitalisation (reference price × population), percentage changes, and up to 365 days of daily price history. get_market returns published market-cap rankings for Pokémon, One Piece, or the combined tracked index.

All prices are daily reference observations in USD — not live executable quotes. Null values mean unavailable data; the server never substitutes zeros.

Interactive view in supported hosts

In MCP Apps-capable hosts such as ChatGPT and Claude, each tool renders an interactive in-chat view showing card artwork, a printing selector and price-history controls. Other hosts receive the same structured data alongside card-page links users can open directly.

Data scope and freshness

Current coverage is graded Pokémon and One Piece PSA 10 cards tracked by CardZ Marketcap. Data dates are included in every response and may differ from the time of query. Successful responses may be cached at the Cloudflare edge for 60 seconds; card images may be cached for 24 hours.

Privacy

Public lookup requires no CARDZ.Game account. The tools never request passwords, addresses, payment details or wallet information. Search terms are sent to the CardZ Marketcap public API. The service uses source IP addresses for rate limiting only and does not create player profiles or maintain a query-history database.

What it is not

CARDZ MCP is data only. It provides no trading, buying, pack-opening, auction, shipping or payment functionality.

Features

1. Three focused tools — search cards, read per-printing metrics, explore market-cap rankings.
2. Zero authentication — no API key, no account, no login; connect and query immediately.
3. Interactive in-chat view — MCP Apps-capable hosts (e.g. ChatGPT, Claude) render card artwork, printing selection and price-history controls inline.
4. Daily PSA 10 reference prices — dated USD observations with up to 365 days of history per printing.
5. Market-cap rankings — published rankings for Pokémon, One Piece, or the combined tracked index, with effective dates.
6. Privacy-first — no player profiles, no query-history database, no analytics or browser storage in the interactive view.
7. Streamable HTTP transport — single URL endpoint, compatible with any MCP client that supports the protocol.

Tools

Tool	Description
search_cards	Search graded Pokémon or One Piece cards by name or collector number; returns candidate printings, languages, sets and card-page links.
get_card	Read one printing's PSA 10 reference price, population, market cap, percentage changes, metric dates and up to 365 days of daily history.
get_market	Retrieve published market-cap rankings for Pokémon, One Piece or the combined index in its published order.

Setup

Generic MCP JSON config

{
  "mcpServers": {
    "cardz": {
      "url": "https://mcp.cardz.game/mcp"
    }
  }
}

Claude Desktop / Claude Code

Add the JSON block above to your Claude MCP settings. No API key or environment variables needed.

ChatGPT (custom MCP connector)

Point a Streamable HTTP MCP connector at https://mcp.cardz.game/mcp — no authentication header required.

Cursor

In Cursor Settings → MCP, add a new server with URL https://mcp.cardz.game/mcp and transport type Streamable HTTP.

VS Code (Copilot Chat MCP)

Add to .vscode/mcp.json or user settings:

{
  "servers": {
    "cardz": {
      "url": "https://mcp.cardz.game/mcp"
    }
  }
}

Example prompts

1. "What is the PSA 10 price of Charizard ex SAR 217/187?"
2. "Show me the top 10 Pokémon cards by market cap."
3. "Compare the 90-day price history of Luffy OP05-119 and Enel OP05-118."
4. "Search for Pikachu cards and list all tracked printings."
5. "What are the highest market-cap One Piece cards right now?"

FAQ

Q: Do I need an API key or account? A: No. CARDZ MCP requires no authentication, no API key and no CARDZ.Game account. Connect to the URL and start querying.

Q: Is it free? A: Yes. The server is free to use. Requests are rate-limited; retry after an HTTP 429 response.

Q: What cards are covered? A: Current coverage is graded Pokémon and One Piece PSA 10 cards tracked by CardZ Marketcap.

Q: How fresh is the data? A: Prices are daily reference observations in USD, not live quotes. Each response includes the data's effective date. Successful API responses may be cached at the Cloudflare edge for 60 seconds.

Q: What data is collected about me? A: The tools do not request passwords, payment details or wallet information. Source IP addresses are used for rate limiting only. No player profiles or query-history database are maintained, and the interactive view includes no analytics or browser storage.

About

CARDZ — CardZ Marketcap and Cardz.Game are related sites under the CARDZ brand.

• CardZ Marketcap: https://cardzmarketcap.com
• Cardz.Game: https://cardz.game

Contact

[email protected]

License

MIT — applies to the contents of this repository.