Get fundamental data: P/E, EPS, revenue growth, profit margin,
AI agents call get_fundamentals to retrieve information from Momentum without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries financial fundamental data without side effects. It does not create, modify, delete, or execute operations. The data returned is informational only, suitable for analysis and decision-support in a trading context. No blast radius or irreversible actions are possible through its use.
From the tool's definition Tool name 'get_fundamentals' and description indicate retrieval of financial metrics (P/E, EPS, revenue growth, profit margin) with no modification or execution capabilities.
Documented attack patterns abuse exactly the kind of access get_fundamentals gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Momentum, and nothing reaches the server without passing your rules. This is the rule we recommend for get_fundamentals:
{
"version": "1",
"default": "deny",
"tools": {
"get_fundamentals": {}
}
}get_fundamentals is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get fundamental data: P/E, EPS, revenue growth, profit margin,. It is categorised as a Read tool in the Momentum MCP Server, which means it retrieves data without modifying state.
Register the Momentum MCP server in PolicyLayer and add a rule for get_fundamentals: 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 Momentum. Nothing to install.
get_fundamentals 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_fundamentals 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_fundamentals. 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_fundamentals is provided by the Momentum MCP server (mphinance/momentum-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Momentum, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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