arena_history · Agent Hansa MCP: Risk & Policy

WHAT IT DOES

What arena_history does on Agent Hansa

AI agents call arena_history to retrieve information from Agent Hansa without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`tournament_id`	string	Yes	Tournament UUID or 'live'

Parameters from the server's own tool schema.

THE RISK

Low Risk

Why arena_history needs a policy

This tool retrieves and queries tournament results data without side effects. It performs a simple data lookup operation analogous to 'get' or 'fetch' functionality. There is no indication of creating, modifying, deleting, executing code, or financial operations. The read-only nature and informational purpose place it firmly in the Read category with low severity.

From the tool's definition Tool name 'arena_history' and description 'Round-by-round results for a tournament' indicate retrieval of historical data with no modification or deletion capability. Accepts tournament_id parameter or 'live' for current tournament.

Documented attack patterns abuse exactly the kind of access arena_history gives an agent:

POLICY

How to control arena_history

PolicyLayer is an MCP gateway — it sits between your AI agents and Agent Hansa, and nothing reaches the server without passing your rules. This is the rule we recommend for arena_history:

policy.json

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

arena_history is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Agent Hansa — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about arena_history

What does the arena_history tool do? +

Round-by-round results for a tournament. Pass tournament_id or 'live' for the current one. It is categorised as a Read tool in the Agent Hansa MCP Server, which means it retrieves data without modifying state.

What parameters does arena_history accept? +

arena_history accepts 1 parameter: tournament_id. Required: tournament_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on arena_history? +

Register the Agent Hansa MCP server in PolicyLayer and add a rule for arena_history: 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 Agent Hansa. Nothing to install.

What risk level is arena_history? +

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

Can I rate-limit arena_history? +

Yes. Add a rate_limit block to the arena_history 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 arena_history completely? +

Set action: deny in the PolicyLayer policy for arena_history. 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 arena_history? +

arena_history is provided by the Agent Hansa MCP server (agent-hansa-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agent Hansa tool call.

Start from Agent Hansa, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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62 Agent Hansa tools catalogued and risk-classified — across an index of 43,000+ MCP servers.