获取市场新闻（按类别获取最新市场新闻，支持：general=综合新闻, forex=外汇新闻, crypto=加密货币新闻, merger=并购新闻）
AI agents call market_news to retrieve information from Trade MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves news data with no side effects. It does not create, modify, delete, or execute operations. Despite being on a financial/trading server, it merely provides informational market news for research purposes, which is a read-only operation. Severity is low because misuse would only result in accessing news data, not financial impact or code execution.
From the tool's definition Tool name 'market_news' and description indicate it retrieves market news by category (general, forex, crypto, merger).
Attacks that exploit this kind of access
获取市场新闻（按类别获取最新市场新闻，支持：general=综合新闻, forex=外汇新闻, crypto=加密货币新闻, merger=并购新闻）. It is categorised as a Read tool in the Trade MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Trade MCP Server MCP server in PolicyLayer and add a rule for market_news: 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 Trade MCP Server. Nothing to install.
market_news 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 market_news 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 market_news. 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.
market_news is provided by the Trade MCP Server MCP server (woodsgao/trade-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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