Search Herald articles by keyword across all sections
AI agents call search_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 queries and retrieves article data based on keyword search parameters. It has no side effects, does not create or modify data, does not execute commands, and does not delete or move financial resources. It is a straightforward search operation consistent with the 'Read' category. Low severity reflects that misuse (e.g., excessive queries) would have minimal blast radius on the system.
From the tool's definition Tool performs 'Search Herald articles by keyword' which is a retrieval operation. No modification, deletion, or execution of external operations is described.
Attacks that exploit this kind of access
Search Herald articles by keyword across all sections. 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 search_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.
search_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 search_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 search_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.
search_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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