get_rocr · AlphaVantage MCP Server MCP: Risk & Policy

WHAT IT DOES

What get_rocr does on AlphaVantage MCP Server

AI agents call get_rocr to retrieve information from AlphaVantage MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why get_rocr needs a policy

This tool retrieves a financial technical indicator (ROCR) from the AlphaVantage API. It performs a read-only query with no side effects, no data modification, and no execution of commands. While it accesses financial data, it does not move money, create financial obligations, or execute trades—it merely fetches market analysis data.

From the tool's definition Tool name 'get_rocr' follows the naming pattern of sibling tools (get_ad, get_adosc, get_adx, etc.), all of which are technical indicator retrievers. ROCR is a Rate of Change Ratio technical indicator. The 'get_' prefix indicates data retrieval.

Attacks that exploit this kind of access

Questions about get_rocr

What does the get_rocr tool do? +

get_rocr. It is categorised as a Read tool in the AlphaVantage MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_rocr? +

Register the AlphaVantage MCP Server MCP server in PolicyLayer and add a rule for get_rocr: 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 AlphaVantage MCP Server. Nothing to install.

What risk level is get_rocr? +

get_rocr is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_rocr? +

Yes. Add a rate_limit block to the get_rocr 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.

How do I block get_rocr completely? +

Set action: deny in the PolicyLayer policy for get_rocr. 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.

What MCP server provides get_rocr? +

get_rocr is provided by the AlphaVantage MCP Server MCP server (lifejwang11/alphavantage-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.