liara_set_zero_downtime

THE RISK

Medium Risk

Why liara_set_zero_downtime needs a policy

This tool modifies a deployment configuration setting (zero-downtime deployment toggle) for an application. It creates or updates a setting reversibly — it can be enabled or disabled at any time. It does not execute code, delete data, or involve financial transactions. Misuse could affect deployment behavior (e.g., causing downtime during deployments), hence medium severity.

From the tool's definition Enable or disable zero-downtime deployment for an app

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

POLICY

How to control liara_set_zero_downtime

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "liara_set_zero_downtime": {
      "limits": [
        {
          "counter": "liara_set_zero_downtime_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

liara_set_zero_downtime stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

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

LIMIT THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about liara_set_zero_downtime

What does the liara_set_zero_downtime tool do? +

Enable or disable zero-downtime deployment for an app. It is categorised as a Write tool in the Liara MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on liara_set_zero_downtime? +

Register the Liara MCP Server MCP server in PolicyLayer and add a rule for liara_set_zero_downtime: 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 Liara MCP Server. Nothing to install.

What risk level is liara_set_zero_downtime? +

liara_set_zero_downtime is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit liara_set_zero_downtime? +

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

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

liara_set_zero_downtime is provided by the Liara MCP Server MCP server (razavioo/liara-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Liara MCP Server tool call.

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

CHECK YOUR STACK →