Get a list of all available rarities in the database
AI agents call getRarities to retrieve information from RAGmonsters Custom PostgreSQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward data retrieval tool that fetches metadata (rarity values) from the RAGmonsters dataset. It performs no writes, deletes, executions, or financial operations. The blast radius of misuse is minimal—an AI agent querying this endpoint could only retrieve existing reference data, with no ability to modify, delete, or damage the database.
From the tool's definition Tool name 'getRarities' and description 'Get a list of all available rarities in the database' indicate a retrieval operation that queries and returns data without any side effects, modifications, or external operations.
Attacks that exploit this kind of access
Get a list of all available rarities in the database. It is categorised as a Read tool in the RAGmonsters Custom PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the RAGmonsters Custom PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for getRarities: 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 RAGmonsters Custom PostgreSQL MCP Server. Nothing to install.
getRarities 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 getRarities 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 getRarities. 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.
getRarities is provided by the RAGmonsters Custom PostgreSQL MCP Server MCP server (lostinbrittany/ragmonsters-mcp-pg). 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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