List all available Anki decks with basic information.
AI agents call list_decks to retrieve information from Anki MCP Data Bridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns existing deck information without creating, modifying, or deleting any data. It is a straightforward read operation with minimal security risk, even if misused by an AI agent. The worst-case scenario would be information disclosure about available decks, which is low-severity.
From the tool's definition Tool name 'list_decks' and description 'List all available Anki decks with basic information' indicate a retrieval operation with no data modification or side effects.
Attacks that exploit this kind of access
List all available Anki decks with basic information. It is categorised as a Read tool in the Anki MCP Data Bridge MCP Server, which means it retrieves data without modifying state.
Register the Anki MCP Data Bridge MCP server in PolicyLayer and add a rule for list_decks: 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 Data Bridge. Nothing to install.
list_decks 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 list_decks 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 list_decks. 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.
list_decks is provided by the Anki MCP Data Bridge MCP server (stefanspycher/anki-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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