Deck of Cards MCP. Manage card state for any game or simulation.
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Deck of Cards MCP Server manages a full playing card deck for AI agents. Use it to shuffle decks, draw specific cards, and organize multiple named piles for complex simulations.
Perfect for building game logic or running probability experiments directly in your agent.
What your AI agents can do
Add to pile
Adds specified cards to a named pile.
Create new deck
Creates a brand new, standard deck of cards.
Create partial deck
Creates a deck containing only a specific set of cards.
Create a new standard deck or generate a custom set containing only specified cards.
Draw cards from the main deck, or draw targeted cards from specific piles (top, bottom, or random).
Create named card piles and move cards between the main deck and these named piles.
List all cards currently in a named pile or track the remaining count in the main deck.
Return cards from a pile back to the main deck, or reshuffle the entire deck.
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Supported MCP Clients
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019e5d10add to pile
Adds specified cards to a named pile.
019e5d10create new deck
Creates a brand new, standard deck of cards.
019e5d10create partial deck
Creates a deck containing only a specific set of cards.
019e5d10draw cards
Draws cards from the main deck.
019e5d10draw from pile
Draws cards from the top of a named pile.
019e5d10draw from pile bottom
Draws cards from the bottom of a named pile.
019e5d10draw from pile random
Draws random cards from a named pile.
019e5d10list pile
Lists all cards currently in a named pile.
019e5d10reshuffle deck
Reshuffles an existing, main deck.
019e5d10return pile to deck
Moves all cards from a named pile back into the main deck.
019e5d10return to deck
Returns specified cards to the main deck.
019e5d10shuffle new deck
Creates a new, shuffled deck; can optionally use multiple decks.
019e5d10shuffle pile
Shuffles the cards within a specific named pile.
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What you can do with this MCP connector
Listen up. This server lets your AI agent manage a whole playing card deck. You don't gotta write any backend code to build and run card games. It handles all the state stuff, so your agent can act like the dealer and the game engine. You can simulate everything from a simple draw to some crazy multi-deck casino setup.
Setup and Shuffle Decks
You can start by creating a brand new, standard deck using create_new_deck, or you can build a custom deck with just specific cards using create_partial_deck. To mix things up, shuffle_new_deck lets you generate a whole new, shuffled deck, and it can even handle multiple decks at once. If you've got an existing main deck, reshuffle_deck shuffles it up for you.
You can also shuffle the cards inside a specific pile using shuffle_pile.
Draw Cards
Need some cards? You can draw them straight from the main deck using draw_cards. If you've got named piles, you can draw cards from the top of one with draw_from_pile, pull from the bottom of a pile with draw_from_pile_bottom, or grab random cards from any pile using draw_from_pile_random.
Manage Piles
It's all about tracking where the cards are. You can add specific cards to a named pile using add_to_pile, and you can see every card in a pile using list_pile. To move the game along, you can move all the cards from a named pile back into the main deck with return_pile_to_deck, or just send specific cards back using return_to_deck.
Game Flow Control
When you need to reset the game or change the rules, you can move cards back into the main deck. If you want to move all the cards from a named pile back into the main deck, use return_pile_to_deck. You can also just send a bunch of specified cards back to the main deck with return_to_deck.
This gives you full control over the game's state. You'll nail any game logic or probability experiment with this setup.
How Deck of Cards MCP Works
- 1 First, use
create_new_deckorcreate_partial_deckto initialize your game's card pool and set up any necessary piles. - 2 Next, the agent calls a draw tool (like
draw_cards) to simulate gameplay, which updates the state and moves cards to a designated pile. - 3 Finally, the agent uses tools like
list_pileoradd_to_pileto check the current game state or make manual adjustments before the next turn.
The bottom line is: your AI agent manages the card game state, letting you focus only on the rules, not the card counting.
Who Is Deck of Cards MCP For?
Game developers and data scientists need this. If you're prototyping a new card game or running statistical simulations, this saves you from building a complex backend just to manage card state. It's for people who need predictable, repeatable card mechanics for testing or education.
Prototypes card game logic and mechanics quickly. They use the drawing and pile tools to test win/loss conditions without writing a single server endpoint.
Runs probability simulations or Monte Carlo experiments. They use the API to generate standardized, repeatable card draws for statistical analysis.
Teaches probability and statistics. They run interactive examples, using the state tracking and draw mechanics to illustrate how card ratios change.
What Changes When You Connect
- Simulate any card game flow. You can prototype complex mechanics—like a multi-deck blackjack game—by combining
shuffle_new_deckwith draws, without writing a single line of backend code. - Maintain perfect game state. Tools like
list_pileandadd_to_pileensure you always know exactly which cards are where, preventing the kind of state corruption that plagues manual spreadsheet tracking. - Run accurate simulations. If you need to test card probability (e.g., drawing three aces in a row),
create_partial_decklets you build the exact deck you need for repeatable, reliable data science experiments. - Control card movement precisely. Need to move the 'discard' pile back into the main deck? Use
return_pile_to_deckorreturn_to_deckto manage the lifecycle of the game's assets. - Handle multiple decks. For casino-style games,
shuffle_new_deckhandles up to six or more decks, keeping track of hundreds of cards and their state simultaneously. - Draw from specific spots. You don't just draw from the top. Use
draw_from_pile_bottomordraw_from_pile_randomwhen your game rules require it.
Real-World Use Cases
Blackjack Simulation
A developer needs to test a multi-deck blackjack variant. They use shuffle_new_deck with 6 decks. Then, they call draw_cards repeatedly, and finally, they use list_pile on the 'player_hand' pile to confirm the final hand's value. The state is tracked perfectly, from initialization to final score.
Probability Testing
A data scientist wants to test the odds of drawing a specific card sequence. They use create_partial_deck to build a deck of only Aces and Kings. They call draw_cards repeatedly to simulate the draw. The API handles the card reduction and provides the remaining count, making the simulation clean and verifiable.
Teaching Card Games
An educator wants to show students how the 'discard' pile affects the main deck. They start by creating a deck, then use draw_cards to populate a 'discard' pile. They then call return_pile_to_deck to physically move those cards back, demonstrating the change in the overall deck composition.
Game State Debugging
A game tester notices the card count is off. Instead of manually checking logs, they use list_pile on the 'player_hand' pile and list_pile on the 'discard' pile. This instantly gives them a full inventory of the game's state, allowing them to debug the exact point of failure.
The Tradeoffs
Mixing State Logic
Manually tracking which cards are in the 'player_hand' versus the 'discard' pile using external variables and trying to remember if the main deck was reshuffled or not.
→
Always let the agent manage the state. Use list_pile to get an accurate card inventory for any named pile, and use return_pile_to_deck when you need to merge piles back into the main deck.
Assuming Full Decks
Starting a simulation by assuming a standard 52-card deck, only to realize the game rules require specific card exclusions (e.g., only Jokers).
→
Start with create_partial_deck to build the exact card set needed. This tool ensures your simulation begins with the correct, limited pool of cards, preventing errors.
Over-relying on `draw_cards`
Only using draw_cards and never realizing that a game might require drawing from the bottom or from a specific pile.
→
If your game logic demands it, use the specific draw tools. Try draw_from_pile_bottom or draw_from_pile_random to accurately reflect the game rules.
When It Fits, When It Doesn't
Use this server if your core problem is card state management. Specifically, if you need to model game mechanics—like tracking hands, discards, or multi-deck shuffles—you must use this. The tools handle the arithmetic and state updates for you. Don't use this if you simply need to know the value of a card (e.g., 'what is the rank of the Ace?'). For simple data lookups, stick to a general knowledge base tool. If you are building a state machine that requires complex, conditional logic based on the draw (e.g., IF card=Ace THEN check deck size), you must integrate this API into your agent's logic flow, as it provides the raw, reliable state changes.
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Deck of Cards API. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 13 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Available Capabilities
Managing card game state is a nightmare of manual counting and inconsistent APIs.
When building a card game prototype, you usually have to build three separate systems: the card inventory, the state manager (which tracks where cards are), and the game logic. Manually updating the state—moving cards from the 'hand' pile to the 'discard' pile—is where every developer runs into failure. One misplaced increment, one forgotten call, and your entire simulation breaks.
With this MCP server, the state is handled automatically. You call `draw_cards`, and the system updates the main deck count and moves the card to the designated pile. You get a clean, reliable state change every time, letting your agent focus purely on the game's rules.
Deck of Cards MCP Server: Simulate card draws and pile management.
You no longer have to write custom code to handle the flow of cards. The tools let you initialize a deck using `create_partial_deck`, then run a sequence of draws using `draw_from_pile_random` for maximum unpredictability. Finally, you can use `return_pile_to_deck` to reset the board state, all in a single agentic conversation.
The card state is now a single, reliable data source for your agent. This means the difference between manual tracking and using this server isn't just convenience—it's the ability to execute complex, multi-step game simulations that actually work.
Common Questions About Deck of Cards MCP
How do I start a multi-deck game with the Deck of Cards MCP Server? +
Use the shuffle_new_deck tool. This function lets you specify the number of decks (up to 6 or more) and handles the initial setup and shuffling process for you. The system returns a unique Deck ID and the total card count.
Which tool should I use to move cards from the 'discard' pile back to the main deck? +
Use return_pile_to_deck. This tool moves all cards from a specified pile name back into the main deck, updating both the pile's state and the deck's count.
Can I draw from a specific pile and track those cards? +
Yes. Use draw_from_pile to draw from the top, draw_from_pile_bottom for the bottom, or draw_from_pile_random for random draws. The cards are moved out of the pile, and the remaining count is reported.
What if I only want to test a few specific cards in my game simulation? +
Use create_partial_deck. This tool lets you define a deck that includes only specific cards (e.g., only Aces and Kings), ensuring your simulation is constrained to the cards you need.
How do I use the `list_pile` tool to check the contents of a named pile? +
The list_pile tool shows you exactly which cards are in a specified pile. You just need to give it the name of the pile and the deck ID. It's great for checking player hands or discard piles before making a move.
If I need to reset the game state, which tool should I use to shuffle the entire deck? +
You should use the reshuffle_deck tool. This command takes an existing deck and shuffles it completely, giving you a fresh start without having to create a brand new deck. It's perfect for running multiple rounds.
Does the `create_partial_deck` tool allow me to mix card types, like Jokers and standard playing cards? +
Yes, the create_partial_deck tool lets you specify exactly which cards you want. You can list card codes, including Jokers, to build a custom starting set for any simulation.
What happens if I try to draw more cards than are remaining in the deck using `draw_cards`? +
The API handles this gracefully. If you request more cards than are available, the tool simply returns an error indicating the insufficient card count. Your agent can then catch that error and ask you for a new action.
Can I create a deck that includes Jokers for games like Rummy? +
Yes! Use the create_new_deck tool and set the jokers_enabled parameter to true. This will add two Jokers to your standard 52-card deck.
Is it possible to draw cards from the bottom of a pile instead of the top? +
Absolutely. Use the draw_from_pile_bottom tool by specifying the deck_id and pile_name. You can also use draw_from_pile_random if you need a random card from the middle of a pile.
How do I simulate a casino game that uses 6 shuffled decks? +
Use the shuffle_new_deck tool and set the deck_count parameter to 6. This will return a single deck_id containing 312 cards (52 * 6) in a randomized order.
Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.
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