Search knowledge base articles with advanced filtering options
AI agents call search_articles to retrieve information from HUDU MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a search operation on a knowledge base, which is a read-only retrieval function. It queries existing articles and returns results based on filters, but does not create, modify, delete, or execute any operations. The blast radius of misuse is minimal—worst case an agent retrieves knowledge base content it should not access, which is a confidentiality concern but not a system-impacting risk.
From the tool's definition Tool name 'search_articles' and description 'Search knowledge base articles with advanced filtering options' indicate a query operation that retrieves data without modification or side effects.
Documented attack patterns abuse exactly the kind of access search_articles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and HUDU MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_articles:
{
"version": "1",
"default": "deny",
"tools": {
"search_articles": {}
}
}search_articles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search knowledge base articles with advanced filtering options. It is categorised as a Read tool in the HUDU MCP Server MCP Server, which means it retrieves data without modifying state.
Register the HUDU 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 HUDU 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 HUDU MCP Server MCP server (jlbyh2o/hudu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from HUDU MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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17 HUDU MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.