cards

Sports card database: card search, full set checklists, parallel lookup, card identification.

CommunityDegradedNo sign-inGlobalFreeRead-only

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Sports card database: card search, full set checklists, parallel lookup, card identification.

    How to connect

    How to connect cards to Claude

    The server address to paste into Claude settings:

    https://mycardfolio.com/api/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect cards to ChatGPT

    The server address to paste into ChatGPT settings:

    https://mycardfolio.com/api/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect cards to Cursor

    The server address to paste into Cursor settings:

    https://mycardfolio.com/api/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (7)

    Raw names from tools/list. Only developers need these.

    search_cardsFull-text search over the MyCardfolio sports card database. Searches player/subject names, card numbers, products, sets, and card details. Optionally filter by sport and year.
    get_cardFull detail for a single card by its card_id, plus a few related cards from the same set.
    get_set_checklistComplete checklist of cards in a set by set_id, with set metadata. Output is capped at 500 cards.
    browseNavigate the database hierarchy: no arguments lists sports with card counts; sport lists years; sport + year lists products; product_id lists sets.
    find_variantsFind parallels/variants of a card: cards sharing the same year, product, card number, and subjects but belonging to a different set (e.g. base vs. refractor).
    identify_cardParse a free-text card description or eBay-style listing title (e.g. "1989 Upper Deck Ken Griffey Jr #1 PSA 10") and return the best database matches with a confidence note.
    card_of_the_dayMyCardfolio's featured card of the day (changes daily).