The items that moved most in price this week vs last week (or month vs prev month with period=
AI agents call top_movers 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.
This tool performs a data retrieval and comparison operation with no side effects. It surfaces analytical/trending information from historical price data without creating, modifying, deleting, or executing external operations. The period parameter only changes the time window for the read query, not the operation type.
From the tool's definition Tool retrieves price movement data comparing 'this week vs last week' or 'month vs prev month' without modifying data. Description indicates it queries/reports trending price movements from KPDN Pricecatcher data.
Attacks that exploit this kind of access
The items that moved most in price this week vs last week (or month vs prev month with period=. 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 top_movers: 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.
top_movers 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 top_movers 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 top_movers. 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.
top_movers 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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