Get recent news articles for a specific company
AI agents call get_company_news to retrieve information from MCP Finnhub Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves news data for a company without creating, modifying, deleting, or executing any operations. It is a read-only data retrieval function with minimal blast radius if misused—an AI agent could at worst retrieve news for many companies in succession, but no state would be altered and no financial transactions would occur.
From the tool's definition Tool name 'get_company_news' and description 'Get recent news articles for a specific company' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get recent news articles for a specific company. It is categorised as a Read tool in the MCP Finnhub Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Finnhub Server MCP server in PolicyLayer and add a rule for get_company_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 MCP Finnhub Server. Nothing to install.
get_company_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 get_company_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 get_company_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.
get_company_news is provided by the MCP Finnhub Server MCP server (nimblebraininc/mcp-finnhub). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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