Returns a given number (num) of cards due for review.
AI agents call get_due_cards to retrieve information from Anki MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing card data from the local Anki database based on review schedule criteria. It performs no write, delete, execute, or financial operations. The query is read-only and has no blast radius if misused by an AI agent—it can only retrieve cards the user already has access to. Severity is low because retrieval of study cards poses minimal security risk.
From the tool's definition Tool name 'get_due_cards' and description 'Returns a given number (num) of cards due for review' indicate a query operation that retrieves data without modification or side effects.
Documented attack patterns abuse exactly the kind of access get_due_cards gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Anki MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_due_cards:
{
"version": "1",
"default": "deny",
"tools": {
"get_due_cards": {}
}
}get_due_cards is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Returns a given number (num) of cards due for review. It is categorised as a Read tool in the Anki MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Anki MCP Server MCP server in PolicyLayer and add a rule for get_due_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 Anki MCP Server. Nothing to install.
get_due_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 get_due_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 get_due_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.
get_due_cards is provided by the Anki MCP Server MCP server (scorzeth/anki-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Anki MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4 Anki MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.