# Midpoint Card Prices **Category:** 💻 Developer Tools **Repository:** https://github.com/kolourr/midpoint-mcp **Views:** 0 **Installs:** 0 **Upvotes:** 0 **Directory Page:** https://allmcps.com/mcp/midpoint-card-prices ## Description Trading card prices and grading ROI for 1.5M+ Pokémon, Magic, Yu-Gi-Oh! and sports cards. Read-only. ## Claude Desktop Quick Installation Heuristic fallback — verify the package name and runner against the repository README before running it. Uses `npx` (confidence: low): ```json "mcpServers": { "midpoint-card-prices": { "command": "npx", "args": ["-y","midpoint-card-prices"] } } ``` ## Documentation & README # Midpoint MCP server Trading-card market prices and grading ROI as [Model Context Protocol](https://modelcontextprotocol.io) tools. Read-only, no account, no API key. Powers the **Midpoint Card Prices** plugin in ChatGPT and works with Claude, Claude Code, Cursor and any MCP client. - **Endpoint:** `https://mcp.cardcenteringtool.com/mcp` (Streamable HTTP) - **Docs and connect instructions:** - **Official MCP Registry:** `com.cardcenteringtool/card-prices` () - **Data:** 1.5M+ Pokémon, Magic, Yu-Gi-Oh!, One Piece, Lorcana, Gundam, sports and entertainment cards; USD market values from real sold listings, refreshed daily. Same data as . ## What you can ask Plain questions in a collector's words. The assistant picks the tool, finds the card and answers with prices, the capture date and a link to the card page. - *"What is a PSA 10 Base Set Charizard worth?"* · *"Is my Umbreon VMAX alt art worth grading?"* - *"1986 Fleer Michael Jordan raw and PSA 10 price"* · *"Luka Doncic Prizm Silver rookie value"* - *"1952 Topps Mickey Mantle PSA 10 price history"* · *"Is my Shohei Ohtani rookie worth grading?"* - *"Alpha Black Lotus price"* · *"LOB-001 Blue-Eyes White Dragon 1st edition"* · *"OP-01 Manga Luffy"* - *"Which Pokémon cards jumped the most this month?"* · *"Which rising cards actually sell?"* - *"Most valuable cards in Evolving Skies"* · *"Best basketball cards to grade"* Every answer can include raw prices by condition (NM/LP/MP/HP), the graded ladder for PSA, CGC, BGS, SGC and TAG, the PSA 9 and PSA 10 premium over raw, net profit after $25/$50/$150 fees, expected value by gem rate, the break-even gem rate, 7–180 days of price history, 30-day movers, liquid movers, best cards to grade, and priced set checklists. Coverage: Pokémon, Magic: The Gathering, Yu-Gi-Oh!, One Piece, Disney Lorcana, Riftbound, Gundam, Dragon Ball, Digimon; baseball, basketball, football, hockey, soccer, wrestling, UFC, racing, tennis, golf, boxing; Marvel, Star Wars, Garbage Pail Kids and other entertainment and TCG sets. ## Installation Remote server, nothing to install. Add it to any MCP client that supports HTTP servers: ```json { "mcpServers": { "midpoint": { "url": "https://mcp.cardcenteringtool.com/mcp" } } } ``` Clients that only speak stdio (Claude Desktop, some IDE plugins) can bridge with `mcp-remote`: ```json { "mcpServers": { "midpoint": { "command": "npx", "args": ["-y", "mcp-remote", "https://mcp.cardcenteringtool.com/mcp"] } } } ``` - **ChatGPT:** install *Midpoint Card Prices* from the plugin directory, or in Developer Mode add a connector with the endpoint. - **Claude (web, desktop, mobile):** Customize → Connectors → Add custom connector → paste the endpoint. - **Claude Code:** `claude mcp add --transport http midpoint https://mcp.cardcenteringtool.com/mcp` - **Cursor / Windsurf / others:** paste the JSON above into the client's MCP settings. - **MCP Inspector:** `npx @modelcontextprotocol/inspector` and connect to the endpoint. No authentication. Streamable HTTP transport. Rate limited per client IP. ## Tools ### search_cards Find cards by name, set, number or year and return raw and PSA 10 USD prices with the card id. **Inputs:** `query`, `game?`, `set_id?`, `limit?` ### get_card_prices Full price ladder for one card: raw by condition (NM/LP/MP/HP) and graded prices for PSA, CGC, BGS, SGC and TAG by grade. The ladder is for the card's **primary printing** (`variant`, e.g. "holofoil"); other printings of the same id (reverse holo, 1st edition…) come back separately under `other_variants` and are never mixed in. `raw_note` is set when the raw ladder is out of condition order (thin data). **Inputs:** `card_id` ### grading_roi Is this card worth grading? Raw vs PSA 9 vs PSA 10, gem premium, net profit after $25/$50/$150 fees, expected value by gem rate, break-even gem rate, which company pays most, and a plain verdict. **Inputs:** `card_id`, `grading_fee_usd?` ### get_price_history Dated market values over 7 to 180 days for the raw series or a PSA grade (1–10, half grades allowed). The series follows one printing (`variant`). `coverage` says how many of the days have a capture and how to read repeated or sparse values: a value repeated on consecutive days is an unchanged market estimate, not a frozen market. **Inputs:** `card_id`, `days?`, `grade?` ### best_cards_to_grade Cards with the biggest expected net profit from grading in a game or set (half PSA 10, half PSA 9, minus raw and the fee; both graded prices required). **Inputs:** `game`, `set_slug?`, `grading_fee_usd?`, `limit?` ### trending_cards Biggest 30-day gainers or drops, one game or all. **Inputs:** `game?`, `direction?`, `min_market_usd?`, `limit?` ### liquid_movers Rising cards (30-day change > 0) with a recorded sales count of 25+ in the last year. Each candidate's own 40-day series is checked first (enough captures, stable baseline, no one-capture jump); unstable ones are dropped and counted in `excluded_unstable`. `trending_cards` applies the same check. Cards whose source does not track yearly volume are excluded unless `include_unknown_volume` is set. **Inputs:** `game?`, `include_unknown_volume?`, `limit?` ### list_sets Sets and expansions for a game, newest first, with ids. **Inputs:** `game`, `query?`, `limit?` ### get_set_cards Priced checklist or most valuable cards in a set. **Inputs:** `game`, `set_id`, `sort?`, `limit?` Every tool is read-only (`readOnlyHint: true`, `destructiveHint: false`, `openWorldHint: false`), returns `structuredContent` with an output schema, and links back to the matching page on cardcenteringtool.com. Card ids are the public URL keys (`swsh7-215`, `pricecharting-1821843`). Game keys: `pokemon magicthegathering yugioh onepiece lorcana riftbound gundam dragonball digimon baseball basketball football hockey soccer wrestling ufc racing tennis golf boxing marvel starwars gpk entertainment othertcg`. ## Discord bot The same nine tools as slash commands (`/price`, `/grade`, `/history`, `/trending`, `/movers`, `/set`), answered as embeds. Source in `src/discord/`, built by the same `npm run build`, run with `npm run start:discord` (or `Dockerfile.discord` as a second Coolify app). It is a plain HTTP client of the public server: no database, no secrets beyond the bot token. The server labels its calls and links as client `discord`. Environment: `DISCORD_BOT_TOKEN`, `DISCORD_CLIENT_ID` (both from the Discord Developer Portal → your application → Bot / General Information), optional `MCP_URL` (defaults to production) and `APP_LINK` (defaults to `https://www.cardcenteringtool.com/go/discord`). Invite URL: `https://discord.com/oauth2/authorize?client_id=&scope=bot%20applications.commands&permissions=2048` (Send Messages). Commands are registered globally on boot; Discord can take up to an hour to show them in every server after the first registration. ## Data handling Requests carry only the tool arguments (card names, ids, filters) and the caller's IP for rate limiting. Privacy policy: . Support: .