Verfuegbare Nachrichtenquellen suchen (Cache-TTL: 24h).
AI agents call news_search_sources to retrieve information from Pypi:news Monitor without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or lists available news sources from the WorldNewsAPI service. It performs a search/query operation with no capability to modify, delete, or execute arbitrary actions. The operation is read-only, has no blast radius beyond information disclosure, and cannot cause financial harm or destructive changes. Classified as Read with low severity.
From the tool's definition Tool name 'news_search_sources' and description 'Verfuegbare Nachrichtenquellen suchen' (Available news sources search) indicates querying/listing available news sources. The cache TTL note confirms this is a read operation with no side effects.
Attacks that exploit this kind of access
Verfuegbare Nachrichtenquellen suchen (Cache-TTL: 24h). It is categorised as a Read tool in the Pypi:news Monitor MCP Server, which means it retrieves data without modifying state.
Register the Pypi:news Monitor MCP server in PolicyLayer and add a rule for news_search_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 Pypi:news Monitor. Nothing to install.
news_search_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 news_search_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 news_search_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.
news_search_sources is provided by the Pypi:news Monitor MCP server (pypi:news-monitor-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.
Teams ship this data inside their own products. See what a licence covers →