modify_uat_order · Nubra MCP Server MCP: Risk & Policy

WHAT IT DOES

What modify_uat_order does on Nubra MCP Server

AI agents use modify_uat_order to create or update resources in Nubra MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nubra MCP Server environment.

WHY IT NEEDS A POLICY

Why modify_uat_order needs a policy

This tool modifies existing trading orders, which is a reversible write operation that changes financial state (order quantity, price, or parameters). It does not delete orders (would be Destructive) or move money directly (would be Financial), but modifies financial instruments/obligations. The UAT-only restriction limits real-world blast radius, but misuse in UAT could still corrupt trading records.

From the tool's definition Tool name 'modify_uat_order' and description state it 'Modify a single existing order' — a direct modification of financial/trading data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

modify_uat_order Rate-limited

modify_uat_order 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Nubra MCP Server, so you can run agents against it safely.

FAQ

Questions about modify_uat_order

What does the modify_uat_order tool do? +

Modify a single existing order through Nubra UAT only. PROD trading is strictly blocked. It is categorised as a Write tool in the Nubra 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 modify_uat_order? +

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

What risk level is modify_uat_order? +

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

Can I rate-limit modify_uat_order? +

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

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

modify_uat_order is provided by the Nubra MCP Server MCP server (socials-zanskar/nubra-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.