Fetches upcoming earnings calendar (CSV endpoint).
AI agents call fundamentalData_earningsCalendar to retrieve information from MCP Avantage without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves publicly available earnings calendar data from Alpha Vantage API. Fetching historical or upcoming earnings information is a read-only operation with no side effects—it does not create, modify, delete data, execute code, or involve financial transactions.
From the tool's definition Tool description states it 'Fetches upcoming earnings calendar', which is a retrieval operation with no modification or execution of external actions. The CSV endpoint format confirms data retrieval only.
Attacks that exploit this kind of access
Fetches upcoming earnings calendar (CSV endpoint). It is categorised as a Read tool in the MCP Avantage MCP Server, which means it retrieves data without modifying state.
Register the MCP Avantage MCP server in PolicyLayer and add a rule for fundamentalData_earningsCalendar: 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 MCP Avantage. Nothing to install.
fundamentalData_earningsCalendar 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 fundamentalData_earningsCalendar 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 fundamentalData_earningsCalendar. 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.
fundamentalData_earningsCalendar is provided by the MCP Avantage MCP server (missionsquad/mcp-avantage). 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.
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