o_hnuser

HN profile: karma, created, submission count (200 sats/call; free tier 100 calls/mo)

SERVERHyperion SOURCEhttps://hyperion.thetempleofdoom.com/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-thetempleofdoom-hyperion-hyperion/o-hnuser.md

WHAT IT DOES

What o_hnuser does on Hyperion

AI agents call o_hnuser to retrieve information from Hyperion without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why o_hnuser is rated Low

Even though o_hnuser only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs o_hnuser safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hyperion, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For o_hnuser, this is the rule to start with:

o_hnuser Allowed

o_hnuser is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "o_hnuser": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hyperion, apply this rule, and every o_hnuser call is checked against it from then on.

FAQ

Questions about o_hnuser

What does the o_hnuser tool do? +

HN profile: karma, created, submission count (200 sats/call; free tier 100 calls/mo). It is categorised as a Read tool in the Hyperion MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on o_hnuser? +

Register the Hyperion MCP server in PolicyLayer and add a rule for o_hnuser: 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 Hyperion. Nothing to install.

What risk level is o_hnuser? +

o_hnuser is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit o_hnuser? +

Yes. Add a rate_limit block to the o_hnuser 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.

How do I block o_hnuser completely? +

Set action: deny in the PolicyLayer policy for o_hnuser. 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.

What MCP server provides o_hnuser? +

o_hnuser is provided by the Hyperion MCP server (https://hyperion.thetempleofdoom.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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