get_top_headlines
AI agents call get_top_headlines to retrieve information from Calculator Tools MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches news headlines, which is a read operation that retrieves data with no side effects, no modifications, and no external state changes. The low severity reflects minimal blast radius—incorrect usage would simply return irrelevant or no news data rather than cause harm.
From the tool's definition Tool name 'get_top_headlines' combined with sibling tool 'get_latest_news' and 'list_stored_articles' indicates data retrieval. The server description explicitly mentions 'news fetching from NewsAPI'.
Attacks that exploit this kind of access
get_top_headlines. It is categorised as a Read tool in the Calculator Tools MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Calculator Tools MCP Server MCP server in PolicyLayer and add a rule for get_top_headlines: 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 Calculator Tools MCP Server. Nothing to install.
get_top_headlines 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_top_headlines 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_top_headlines. 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_top_headlines is provided by the Calculator Tools MCP Server MCP server (yogeshkk2/mcp-server). 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.
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