This record as markdown: /tools/io-github-arielbk-anki-mcp/set-deck-config.md
What set_deck_config does on Anki
AI agents use set_deck_config to create or update resources in Anki, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Anki environment.
Why set_deck_config is rated Medium
This tool modifies deck configuration, which is reversible data manipulation. It does not delete (Destructive), execute arbitrary code (Execute), move funds (Financial), or merely read data (Read). The lack of description lowers confidence slightly, but the tool name and server context clearly indicate a Write operation with medium severity due to potential impact on user's study configuration if misused by an agent.
From the tool's definition Tool name 'set_deck_config' indicates modification of deck configuration settings. The empty description prevents direct confirmation, but the verb 'set' combined with the context of an Anki MCP server suggests this writes/modifies configuration data.
Attacks that exploit this kind of access
The rule that runs set_deck_config safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Anki, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_deck_config, this is the rule to start with:
set_deck_config stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Anki, apply this rule, and every set_deck_config call is checked against it from then on.
Questions about set_deck_config
set_deck_config is a write tool on the Anki MCP server. It is categorised as a Write tool in the Anki MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Anki MCP server in PolicyLayer and add a rule for set_deck_config: 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.
set_deck_config is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the set_deck_config 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 set_deck_config. 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.
set_deck_config is provided by the Anki MCP server (@arielbk/anki-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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