FAQ
Questions,answered.
Where the data comes from, what you can build with it, and how plans and limits work.
The data
Where does the data come from?
We collect prices, listings and sales history from live marketplace data and pass every value on exactly as reported. We don't round, average or estimate anything.
How fresh are the prices?
Market prices are refreshed every 6 hours. Listings, recent sales and sold history are refreshed for every card about once a day.
What is a SKU?
One printing, condition and language of a card, such as Holofoil, Near Mint, English. Each card has several SKUs, and every price belongs to one SKU.
Which games and languages do you cover?
Every game on the supported games page, with live card counts. Pokémon is priced in every language and Pokémon Japan in Japanese. Every other game is priced in English.
Do new sets appear on their own?
Yes. New cards are added as soon as they are listed for sale, and they get prices from the next refresh.
Do you have graded card prices?
Not yet. Prices are for raw cards by condition.
Plans and billing
What counts as a request?
Each call to the API is one request, whether it asks for one card or the most your plan allows. Checking your usage is free.
Can I use the data in a commercial product?
Yes, on Pro, Business and Enterprise. Free and Starter are for personal projects.
Do I need a credit card for the free plan?
No. Sign in with your email and your free key is ready on your dashboard.
What happens when I reach a limit?
The API answers 429 with a Retry-After header saying how many seconds to wait. Requests turned away at a limit are not counted.
Can I change or cancel my plan?
Yes, any time from your dashboard. Payments are handled by Stripe, so your card details never reach us.
Using the API
How do I authenticate?
Send your key in the X-API-Key header of every request. There is no OAuth and no token exchange.
Can I store the prices I fetch?
Yes, for use in your own app while your plan is active. You can't resell the raw data or publish it as a dataset.
Is there an OpenAPI spec?
Yes. The schema is at /openapi.json and interactive docs are at /docs.
AI agents
Do you have an MCP server?
Yes. Point Claude Code, Cursor, VS Code or Claude Desktop at /mcp with your API key in the X-API-Key header. The setup page has the exact command for each one.
Do MCP calls cost extra?
No. Each tool call counts as one request on your plan, the same as the REST endpoint it uses.
Get started