getBiggestLosers
Access data on the stocks with the largest price drops using the Biggest Stock Losers API. Identify companies experiencing significant declines and track the stocks that are falling the fastest in the market.
This record as markdown: /tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbiggestlosers.md
What getBiggestLosers does on Financial Modeling Prep MCP Server
AI agents call getBiggestLosers to retrieve information from Financial Modeling Prep MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why getBiggestLosers is rated Low
getBiggestLosers retrieves and queries market data about stock price performance. There are no side effects: it does not create, modify, delete, or execute anything. The tool simply returns market information, making it a standard Read operation with low risk if misused by an AI agent (worst case: an agent queries losers repeatedly or uses the data in subsequent decisions, neither of which causes harm).
From the tool's definition Tool provides 'Access data on the stocks with the largest price drops' and 'Identify companies' and 'track the stocks' — purely descriptive operations with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
The rule that runs getBiggestLosers safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Financial Modeling Prep MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For getBiggestLosers, this is the rule to start with:
getBiggestLosers is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Financial Modeling Prep MCP Server, apply this rule, and every getBiggestLosers call is checked against it from then on.
Questions about getBiggestLosers
Access data on the stocks with the largest price drops using the Biggest Stock Losers API. Identify companies experiencing significant declines and track the stocks that are falling the fastest in the market. It is categorised as a Read tool in the Financial Modeling Prep MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Financial Modeling Prep MCP Server MCP server in PolicyLayer and add a rule for getBiggestLosers: 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 Financial Modeling Prep MCP Server. Nothing to install.
getBiggestLosers 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 getBiggestLosers 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 getBiggestLosers. 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.
getBiggestLosers is provided by the Financial Modeling Prep MCP Server MCP server (financial-modeling-prep-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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