Pivot FAMA
AI agents call fama_margin 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.
The server description explicitly states it enables 'querying' and 'price searches and comparisons'—purely read operations. The tool sits alongside other analytical read-only tools. The vague description 'Pivot FAMA' is characteristic of a data pivot/aggregation function, which retrieves and reorganizes existing data without side effects. No evidence of write, delete, execute, or financial operations.
From the tool's definition The tool name 'fama_margin' with description 'Pivot FAMA' appears to be a data querying/aggregation tool. Based on the sibling tools (basket_watch, category_trends, chain_mom_movers, compare_prices, fama_price_history, fama_top_movers, find_cheapest,…
Attacks that exploit this kind of access
Pivot FAMA. 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 fama_margin: 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.
fama_margin 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 fama_margin 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 fama_margin. 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.
fama_margin 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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