AI agents call value_up_plan 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 searches for and parses corporate value-up plan disclosures for Korean stocks. Both operations are read-only data retrieval with no side effects. Severity is low as it only reads/returns public disclosure data.
From the tool's definition 기업가치제고계획(밸류업) 공시 검색 및 원문 파싱 — 'search' (검색) and 'parsing' (파싱) of corporate value enhancement plan disclosures
Documented attack patterns abuse exactly the kind of access value_up_plan 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 value_up_plan:
{
"version": "1",
"default": "deny",
"tools": {
"value_up_plan": {}
}
}value_up_plan is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
desc: 기업가치제고계획(밸류업) 공시 검색 및 원문 파싱. 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 value_up_plan: 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.
value_up_plan 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 value_up_plan 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 value_up_plan. 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.
value_up_plan 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.
Free to start. No card required.
54 Open Proxy tools catalogued and risk-classified — across an index of 43,000+ MCP servers.