getHistoricalIndexLightChart
Retrieve end-of-day historical prices for stock indexes using the Historical Price Data API. This API provides essential data such as date, price, and volume, enabling detailed analysis of price movements over time.
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What getHistoricalIndexLightChart does on Financial Modeling Prep MCP Server
AI agents call getHistoricalIndexLightChart 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 getHistoricalIndexLightChart is rated Low
This tool retrieves historical financial data (prices and volume) for indexes with no side effects. It is a read-only query operation that fetches and returns information without creating, modifying, deleting, or executing any external operations. The blast radius of misuse is minimal—an agent could only access historical market data already publicly available.
From the tool's definition Tool name 'getHistorical...' and description 'Retrieve end-of-day historical prices' and 'provides essential data such as date, price, and volume'. No modification, deletion, or execution of code/commands described.
Attacks that exploit this kind of access
The rule that runs getHistoricalIndexLightChart 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 getHistoricalIndexLightChart, this is the rule to start with:
getHistoricalIndexLightChart 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 getHistoricalIndexLightChart call is checked against it from then on.
Questions about getHistoricalIndexLightChart
Retrieve end-of-day historical prices for stock indexes using the Historical Price Data API. This API provides essential data such as date, price, and volume, enabling detailed analysis of price movements over time. 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 getHistoricalIndexLightChart: 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.
getHistoricalIndexLightChart 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 getHistoricalIndexLightChart 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 getHistoricalIndexLightChart. 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.
getHistoricalIndexLightChart 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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