AI agents call hn_top_stories to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | number | — |
Parameters from the server's own tool schema.
This tool queries publicly available data from Hacker News and returns results. It performs no modifications, deletions, code execution, or financial operations. It is a straightforward read-only retrieval function with minimal security risk.
From the tool's definition Tool name 'hn_top_stories' and description 'Get the top stories from Hacker News' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get the top stories from Hacker News. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
hn_top_stories accepts 1 parameter: limit. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for hn_top_stories: 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 UnClick. Nothing to install.
hn_top_stories 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 hn_top_stories 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 hn_top_stories. 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.
hn_top_stories is provided by the UnClick MCP server (@unclick/mcp-server). 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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