Model Context Protocol · Free
The first sports card checklist MCP server
Connect Cardboard Checklist to Claude and ask about any set in plain English — who's on a team, what inserts exist, how rare each parallel is. No SQL, no scrolling giant tables. Claude looks it up for you.
Server URL
https://www.cardboardchecklist.com/api/mcpAsk Claude things like
“Who are the Orioles in 2026 Topps Finest?
“Which 2026 baseball sets have pack odds loaded?
“What are the base Refractor odds in Chrome Platinum (Hobby)?
“List the rookies in 2025 Topps Series 2.
“Compare the parallel ladders for Series 2 and Chrome Platinum.
What Claude can do
Search checklists
Find any set by name, sport, or year.
Get checklist
Full breakdown of a set: counts, subsets, and configurations.
List cards
Filter a set by team, player, card type, rookie, or insert.
Get odds
Pack odds by card type, for each product configuration.
Add it to Claude
Claude (web & desktop app)
- 1Open Settings → Connectors.
- 2Click Add custom connector.
- 3Paste the server URL above. Leave the other fields blank.
- 4Start a new chat and ask a card question.
Requires a Claude plan that supports custom connectors (Pro, Max, Team, or Enterprise).
Claude Code
Run this in your terminal:
claude mcp add --transport http cardboard https://www.cardboardchecklist.com/api/mcpFree, public, and read-only. It can look things up across every checklist on the site — it can never change your data or the site. Powered by the same database behind cardboardchecklist.com.
Prefer to browse?
Explore every checklist right here on the site.