Browse recent Herald articles, optionally filtered by section
AI agents call list_articles to retrieve information from Hallucination Herald MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data (a list of articles) with no side effects. It is a straightforward read operation consistent with browsing or listing content. No data is created, modified, deleted, or executed. Severity is low because misuse would only result in viewing unintended articles, with no blast radius or harmful consequences.
From the tool's definition Tool name 'list_articles' and description 'Browse recent Herald articles' indicate retrieval without modification. The optional filtering is a query parameter that does not change data.
Attacks that exploit this kind of access
Browse recent Herald articles, optionally filtered by section. It is categorised as a Read tool in the Hallucination Herald MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Hallucination Herald MCP Server MCP server in PolicyLayer and add a rule for list_articles: 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 Hallucination Herald MCP Server. Nothing to install.
list_articles 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 list_articles 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 list_articles. 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.
list_articles is provided by the Hallucination Herald MCP Server MCP server (jotapee/hallucinationherald-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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