getHistoricalIndexFullChart
Access full historical end-of-day prices for stock indexes using the Detailed Historical Price Data API. This API provides comprehensive information, including open, high, low, close prices, volume, and additional metrics for detailed financial analysis.
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What getHistoricalIndexFullChart does on Financial Modeling Prep
AI agents call getHistoricalIndexFullChart to retrieve information from Financial Modeling Prep without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
to | string | — | End date (YYYY-MM-DD) |
from | string | — | Start date (YYYY-MM-DD) |
symbol | string | — | Index symbol (e.g., ^GSPC for S&P 500) |
Parameters from the server's own tool schema.
Why getHistoricalIndexFullChart is rated Low
This tool retrieves historical index price data for analysis purposes. It performs no writes, deletes, executions, or financial transactions. The data is read-only and already-published market information. While the data could inform financial decisions, the tool itself only reads and does not commit any financial obligations or execute trades.
From the tool's definition Tool description states 'Access full historical end-of-day prices' and 'provides comprehensive information, including open, high, low, close prices, volume' — all retrieval operations with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
The rule that runs getHistoricalIndexFullChart safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Financial Modeling Prep, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For getHistoricalIndexFullChart, this is the rule to start with:
getHistoricalIndexFullChart 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, apply this rule, and every getHistoricalIndexFullChart call is checked against it from then on.
Questions about getHistoricalIndexFullChart
Access full historical end-of-day prices for stock indexes using the Detailed Historical Price Data API. This API provides comprehensive information, including open, high, low, close prices, volume, and additional metrics for detailed financial analysis. It is categorised as a Read tool in the Financial Modeling Prep MCP Server, which means it retrieves data without modifying state.
getHistoricalIndexFullChart accepts 3 parameters: to, from, symbol. The full parameter table on this page comes from the server's own tool schema.
Register the Financial Modeling Prep MCP server in PolicyLayer and add a rule for getHistoricalIndexFullChart: 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. Nothing to install.
getHistoricalIndexFullChart 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 getHistoricalIndexFullChart 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 getHistoricalIndexFullChart. 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.
getHistoricalIndexFullChart is provided by the Financial Modeling Prep MCP server (cfocoder/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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