Return up to 10 premises with the lowest price this week, cheapest first. Anchor EITHER on a numeric item_code (one SKU — call search_items first to resolve a name) OR on a category slug (e.g.
AI agents call find_cheapest to retrieve information from ManaMurah MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
find_cheapest is a pure data retrieval function that searches and returns price comparison results from the KPDN Pricecatcher database. It has no side effects, does not modify any data, and does not execute commands or trigger financial transactions. The blast radius of misuse is minimal—an agent could only retrieve price information it is already authorized to access.
From the tool's definition Tool returns/queries data ("Return up to 10 premises with the lowest price") with no modification, creation, deletion, or execution of external operations. It retrieves pricing information filtered by item_code or category slug.
Attacks that exploit this kind of access
Return up to 10 premises with the lowest price this week, cheapest first. Anchor EITHER on a numeric item_code (one SKU — call search_items first to resolve a name) OR on a category slug (e.g. It is categorised as a Read tool in the ManaMurah MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ManaMurah MCP Server MCP server in PolicyLayer and add a rule for find_cheapest: 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 ManaMurah MCP Server. Nothing to install.
find_cheapest 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 find_cheapest 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 find_cheapest. 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.
find_cheapest is provided by the ManaMurah MCP Server MCP server (manamurah/mcp-server). 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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