AI agents call get_news to retrieve information from Tiingo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves news data related to financial instruments without any mechanism to create, modify, delete, or execute operations. It is a read-only query tool consistent with other data retrieval methods on the server. Confidence slightly reduced due to empty description, but context from sibling tools and server design strongly suggests a simple read operation with minimal security blast radius.
From the tool's definition Tool name 'get_news' with context from sibling tools (get_company_meta, get_crypto_prices, get_forex_quote, etc.) all retrieve financial data without modification.
Attacks that exploit this kind of access
get_news. It is categorised as a Read tool in the Tiingo MCP Server, which means it retrieves data without modifying state.
Register the Tiingo MCP server in PolicyLayer and add a rule for get_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 Tiingo. Nothing to install.
get_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_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_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_news is provided by the Tiingo MCP server (major7apps/tiingo-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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