Returns an unordered array of note IDs for the given card IDs.
AI agents call cardsToNotes to retrieve information from Anki without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves data (note IDs corresponding to card IDs) with no side effects. It is a straightforward read operation that does not create, modify, delete, or execute any actions. The low severity reflects minimal risk if misused by an AI agent, as it only exposes existing relational data mapping.
From the tool's definition Tool description states it 'Returns an unordered array of note IDs' — a pure retrieval operation with no modification, deletion, or execution of external commands.
Documented attack patterns abuse exactly the kind of access cardsToNotes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Anki, and nothing reaches the server without passing your rules. This is the rule we recommend for cardsToNotes:
{
"version": "1",
"default": "deny",
"tools": {
"cardsToNotes": {}
}
}cardsToNotes 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 an unordered array of note IDs for the given card IDs. It is categorised as a Read tool in the Anki MCP Server, which means it retrieves data without modifying state.
Register the Anki MCP server in PolicyLayer and add a rule for cardsToNotes: 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. Nothing to install.
cardsToNotes 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 cardsToNotes 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 cardsToNotes. 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.
cardsToNotes is provided by the Anki MCP server (ujisati/anki-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Anki, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
40 Anki tools catalogued and risk-classified — across an index of 43,000+ MCP servers.