AI agents call ownership_treasury_tx to retrieve information from Open Proxy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name pattern and server context indicate this retrieves or queries treasury transaction and ownership information from Korean stock governance disclosures, consistent with Read operations (search, list, get, fetch). The empty description limits confidence, but the absence of verbs like 'create', 'delete', 'execute', or 'transfer' suggests read-only data access.
From the tool's definition Tool name 'ownership_treasury_tx' suggests querying treasury stock transaction or ownership data. The server provides 'AI-ready data for investors' with other tools like 'agm_agenda_xml', 'agm_financials_xml', etc., all appearing to retrieve disclosure…
Documented attack patterns abuse exactly the kind of access ownership_treasury_tx gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Open Proxy, and nothing reaches the server without passing your rules. This is the rule we recommend for ownership_treasury_tx:
{
"version": "1",
"default": "deny",
"tools": {
"ownership_treasury_tx": {}
}
}ownership_treasury_tx is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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ownership_treasury_tx. It is categorised as a Read tool in the Open Proxy MCP Server, which means it retrieves data without modifying state.
Register the Open Proxy MCP server in PolicyLayer and add a rule for ownership_treasury_tx: 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 Open Proxy. Nothing to install.
ownership_treasury_tx 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 ownership_treasury_tx 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 ownership_treasury_tx. 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.
ownership_treasury_tx is provided by the Open Proxy MCP server (marcoyou/open-proxy-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Open Proxy, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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54 Open Proxy tools catalogued and risk-classified — across an index of 43,000+ MCP servers.