AI agents call scan_stocks to retrieve information from Borsa MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial market data and applies technical analysis filters to identify stocks matching user-defined criteria. It has no side effects, does not execute trades, modify data, or commit financial obligations. It is purely a read/query operation on market data, comparable to searching or filtering operations.
From the tool's definition Tool performs a 'Scan' operation that retrieves and analyzes technical indicator data (RSI, MACD, Supertrend, T3) against preset or custom conditions. No data modification, deletion, or financial transactions occur—it only queries and filters market data.
Attacks that exploit this kind of access
Scan BIST stocks by technical indicators (RSI, MACD, Supertrend, T3). Use preset or custom condition. It is categorised as a Read tool in the Borsa MCP MCP Server, which means it retrieves data without modifying state.
Register the Borsa MCP server in PolicyLayer and add a rule for scan_stocks: 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 Borsa MCP. Nothing to install.
scan_stocks 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 scan_stocks 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 scan_stocks. 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.
scan_stocks is provided by the Borsa MCP server (saidsurucu/borsa-mcp). 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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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