Retrieve a card by its id.
AI agents call get_card_by_id to retrieve information from FlashCardsMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves a single flash card from the database by identifier. It performs data retrieval only, with no capability to modify, delete, or execute operations. The blast radius of misuse is minimal—an attacker could only gain access to flash card data already stored in the system. This aligns cleanly with the Read category.
From the tool's definition Tool name 'get_card_by_id' and description 'Retrieve a card by its id' indicate a pure read operation with no side effects.
Attacks that exploit this kind of access
Retrieve a card by its id. It is categorised as a Read tool in the FlashCardsMCP MCP Server, which means it retrieves data without modifying state.
Register the FlashCards MCP server in PolicyLayer and add a rule for get_card_by_id: 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 FlashCardsMCP. Nothing to install.
get_card_by_id 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_card_by_id 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_card_by_id. 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_card_by_id is provided by the FlashCards MCP server (mtib/flash-cards-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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