lookup_hn_user
Get a Hacker News user profile (karma, about, created). Use for HN-poster qualification. Example call: {"username": "pg"} Cost: $0.005–$0.05 USDC on Base per call.
This record as markdown: /tools/io-github-colinhughes2121-gocreative-agent-api/lookup-hn-user.md
What lookup_hn_user does on GoCreative Agent API
AI agents call lookup_hn_user to retrieve information from GoCreative Agent API 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 |
|---|---|---|---|
username | string | Yes |
Parameters from the server's own tool schema.
Why lookup_hn_user is rated Low
This tool queries publicly available HN profile information without any side effects, permissions changes, or data modification. While it enriches data about individuals, this is a standard read operation on public social platforms. The payment model (per-call USDC) does not elevate the risk category—it only affects cost, not capability.
From the tool's definition Tool retrieves public Hacker News user profile data (karma, about, created) with no modification capability. The description explicitly states 'Get' and 'Use for...qualification', indicating pure data retrieval.
Attacks that exploit this kind of access
The rule that runs lookup_hn_user safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GoCreative Agent API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For lookup_hn_user, this is the rule to start with:
lookup_hn_user 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 GoCreative Agent API, apply this rule, and every lookup_hn_user call is checked against it from then on.
Questions about lookup_hn_user
Get a Hacker News user profile (karma, about, created). Use for HN-poster qualification. Example call: {"username": "pg"} Cost: $0.005–$0.05 USDC on Base per call. It is categorised as a Read tool in the GoCreative Agent API MCP Server, which means it retrieves data without modifying state.
lookup_hn_user accepts 1 parameter: username. Required: username. The full parameter table on this page comes from the server's own tool schema.
Register the GoCreative Agent API MCP server in PolicyLayer and add a rule for lookup_hn_user: 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 GoCreative Agent API. Nothing to install.
lookup_hn_user 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 lookup_hn_user 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 lookup_hn_user. 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.
lookup_hn_user is provided by the GoCreative Agent API MCP server (https://api.gocreativeai.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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