Access real-time aftermarket quotes for stocks with the FMP Aftermarket Quote API. Track bid and ask prices, volume, and other relevant data outside of regular trading hours.
AI agents call getAftermarketQuote to retrieve information from Financial Modeling Prep 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 and displays financial market data (aftermarket stock quotes) without creating, modifying, executing operations on, or deleting any data. It is a pure read operation that queries external financial data sources and returns information to the user. No side effects or irreversible actions are possible.
From the tool's definition Tool name 'getAftermarketQuote' and description states it 'Access[es] real-time aftermarket quotes' and 'Track[s] bid and ask prices, volume, and other relevant data'.
Attacks that exploit this kind of access
Access real-time aftermarket quotes for stocks with the FMP Aftermarket Quote API. Track bid and ask prices, volume, and other relevant data outside of regular trading hours. 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 getAftermarketQuote: 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.
getAftermarketQuote 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 getAftermarketQuote 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 getAftermarketQuote. 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.
getAftermarketQuote is provided by the Financial Modeling Prep MCP Server MCP server (vijitdaroch/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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