Draw cards from a deck. Returns card details (suit, value) and remaining count. Specify count to draw multiple cards at once.
Part of the Deckofcards server.
Free to start. No card required.
AI agents call draw_cards to retrieve information from Deckofcards without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though draw_cards only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"draw_cards": {}
}
}See the full Deckofcards policy for all 23 tools.
These attack patterns abuse exactly the kind of access draw_cards gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Draw cards from a deck. Returns card details (suit, value) and remaining count. Specify count to draw multiple cards at once.. It is categorised as a Read tool in the Deckofcards MCP Server, which means it retrieves data without modifying state.
Register the Deckofcards MCP server in PolicyLayer and add a rule for draw_cards: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Deckofcards. Nothing to install.
draw_cards is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the draw_cards rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for draw_cards. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
draw_cards is provided by the Deckofcards MCP server (https://gateway.pipeworx.io/deckofcards/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 23 Deckofcards tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.