Fetches weekly adjusted time series data for a stock symbol.
AI agents call coreStock_weeklyAdjusted 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 retrieves and queries existing financial data (weekly adjusted stock price data) without side effects. It performs a passive read operation on market data, consistent with the Read category. No data is created, modified, deleted, or used to execute external operations.
From the tool's definition Tool name 'coreStock_weeklyAdjusted' and description 'Fetches weekly adjusted time series data for a stock symbol' indicate retrieval of historical market data with no modification, creation, deletion, or execution of code/commands.
Attacks that exploit this kind of access
Fetches weekly adjusted time series data for a stock symbol. 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 coreStock_weeklyAdjusted: 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.
coreStock_weeklyAdjusted 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 coreStock_weeklyAdjusted 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 coreStock_weeklyAdjusted. 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.
coreStock_weeklyAdjusted 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.
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