getRSI
Calculate the Relative Strength Index (RSI) for a stock using the FMP RSI API. This tool helps users analyze momentum and overbought/oversold conditions based on historical price data.
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What getRSI does on Financial Modeling Prep (FMP) Server
AI agents call getRSI to retrieve information from Financial Modeling Prep (FMP) Server 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 | — | Stock symbol |
timeframe | string | — | Timeframe (1min, 5min, 15min, 30min, 1hour, 4hour, 1day) |
periodLength | number | — | Period length for the indicator |
Parameters from the server's own tool schema.
Why getRSI is rated Low
RSI is a read-only technical indicator calculation that queries and analyzes existing market data without creating, modifying, deleting, or executing any irreversible actions. The tool generates insights from historical data but does not alter state, execute commands, or involve financial transactions. This is purely a data retrieval and analytical operation.
From the tool's definition Tool name 'getRSI' and description 'Calculate the Relative Strength Index (RSI) for a stock' indicates retrieval and calculation of a technical analysis metric from historical price data. No modification, deletion, or financial transaction occurs.
Attacks that exploit this kind of access
The rule that runs getRSI safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Financial Modeling Prep (FMP) Server , and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For getRSI, this is the rule to start with:
getRSI 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 (FMP) Server , apply this rule, and every getRSI call is checked against it from then on.
Questions about getRSI
Calculate the Relative Strength Index (RSI) for a stock using the FMP RSI API. This tool helps users analyze momentum and overbought/oversold conditions based on historical price data. It is categorised as a Read tool in the Financial Modeling Prep (FMP) Server MCP Server, which means it retrieves data without modifying state.
getRSI accepts 5 parameters: to, from, symbol, timeframe, periodLength. The full parameter table on this page comes from the server's own tool schema.
Register the Financial Modeling Prep (FMP) Server MCP server in PolicyLayer and add a rule for getRSI: 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) Server . Nothing to install.
getRSI 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 getRSI 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 getRSI. 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.
getRSI is provided by the Financial Modeling Prep (FMP) Server MCP server (imbenrabi/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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