List available news publishers indexed by NewsAPI.
AI agents call get_sources to retrieve information from NewsAPI 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 lists or enumerates available news sources from the NewsAPI index. It performs a read-only query that returns informational data about publishers without modifying, executing, or deleting anything. The blast radius of misuse is minimal — an agent could only waste API quota or flood requests, but cannot alter data, execute code, or cause financial harm.
From the tool's definition Tool name 'get_sources' and description 'List available news publishers' — retrieves/queries data with no side effects.
Attacks that exploit this kind of access
List available news publishers indexed by NewsAPI. It is categorised as a Read tool in the NewsAPI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NewsAPI MCP Server MCP server in PolicyLayer and add a rule for get_sources: 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 NewsAPI MCP Server. Nothing to install.
get_sources 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_sources 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_sources. 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_sources is provided by the NewsAPI MCP Server MCP server (ranydone/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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