review_flashcard · Flashcard MCP: Risk & Policy

WHAT IT DOES

What review_flashcard does on Flashcard MCP

AI agents use review_flashcard to create or update resources in Flashcard MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Flashcard MCP environment.

WHY IT NEEDS A POLICY

Why review_flashcard needs a policy

The tool modifies flashcard data (spaced repetition schedule and review result) in a reversible way. It creates/updates scheduling metadata based on user performance, which is a write operation. No deletion, execution of code, or financial transaction is involved. Misuse has minimal blast radius since it only affects review scheduling for flashcards.

From the tool's definition Record a review result for a flashcard. This updates the spaced repetition schedule.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

review_flashcard Rate-limited

review_flashcard 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "review_flashcard": {
      "limits": [
        {
          "counter": "review_flashcard_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Flashcard MCP, so you can run agents against it safely.

FAQ

Questions about review_flashcard

What does the review_flashcard tool do? +

Record a review result for a flashcard. This updates the spaced repetition schedule. It is categorised as a Write tool in the Flashcard MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on review_flashcard? +

Register the Flashcard MCP server in PolicyLayer and add a rule for review_flashcard: 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 Flashcard MCP. Nothing to install.

What risk level is review_flashcard? +

review_flashcard is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit review_flashcard? +

Yes. Add a rate_limit block to the review_flashcard 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.

How do I block review_flashcard completely? +

Set action: deny in the PolicyLayer policy for review_flashcard. 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.

What MCP server provides review_flashcard? +

review_flashcard is provided by the Flashcard MCP server (louislva/flashcards-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.