Searches for stock symbols matching keywords.
AI agents call coreStock_search 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 stock symbol information based on search criteria. It is a straightforward read operation that queries existing data without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an agent cannot cause harm by searching for stock symbols.
From the tool's definition Tool name 'coreStock_search' and description 'Searches for stock symbols matching keywords' indicate a query/retrieval operation with no side effects. No data creation, modification, deletion, or execution occurs.
Attacks that exploit this kind of access
Searches for stock symbols matching keywords. 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_search: 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_search 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_search 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_search. 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_search 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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