Get historical price data with flexible time intervals
AI agents call get_historical_chart to retrieve information from Financial Modeling Prep (FMP) MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical stock price data, which is a read-only operation with no side effects. While the FMP server provides financial data, this specific tool merely queries and returns historical pricing information. There is no risk of data modification, code execution, or financial transactions. The severity is low because misuse would only result in information access without operational impact.
From the tool's definition Tool name 'get_historical_chart' and description 'Get historical price data with flexible time intervals' indicate data retrieval only. No modification, deletion, execution, or financial transaction occurs.
Attacks that exploit this kind of access
Get historical price data with flexible time intervals. It is categorised as a Read tool in the Financial Modeling Prep (FMP) MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Financial Modeling Prep (FMP) MCP Server MCP server in PolicyLayer and add a rule for get_historical_chart: 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 (FMP) MCP Server. Nothing to install.
get_historical_chart 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 get_historical_chart 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 get_historical_chart. 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.
get_historical_chart is provided by the Financial Modeling Prep (FMP) MCP Server MCP server (jackdark425/aigroup-fmp-mcp). 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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