This record as markdown: /tools/creativelead-unclick/hn-show-hn.md
What hn_show_hn does on UnClick
AI agents call hn_show_hn to retrieve information from UnClick without modifying anything. It is 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.
Why hn_show_hn is rated Low
This tool queries and returns public Hacker News Show HN posts without any ability to create, modify, delete, or execute operations. It is a straightforward read operation with minimal risk - the worst misuse would be excessive queries, but no sensitive data exposure or system impact is possible.
From the tool's definition Tool retrieves Show HN posts from Hacker News with no modification capability. Description uses 'Get' which indicates data retrieval only.
Attacks that exploit this kind of access
The rule that runs hn_show_hn safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hn_show_hn, this is the rule to start with:
hn_show_hn is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every hn_show_hn call is checked against it from then on.
Questions about hn_show_hn
Get Show HN posts from Hacker News. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
hn_show_hn 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_show_hn: 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_show_hn 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_show_hn 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_show_hn. 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_show_hn is provided by the UnClick MCP server (creativelead/unclick). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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