validate_assignment_rule · ComplyOS MCP: Risk & Policy

WHAT IT DOES

What validate_assignment_rule does on ComplyOS

AI agents invoke validate_assignment_rule to trigger actions in ComplyOS. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why validate_assignment_rule needs a policy

The tool name suggests it validates assignment rules, which likely involves executing a check or evaluation against compliance/LMS logic. Validation operations typically run logic against data, placing them in the Execute category. However, the description is empty, reducing confidence.

From the tool's definition Tool name 'validate_assignment_rule' and server context mentions 'validating assignment rules' as a core capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

validate_assignment_rule Rate-limited

validate_assignment_rule stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "validate_assignment_rule": {
      "limits": [
        {
          "counter": "validate_assignment_rule_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about validate_assignment_rule

What does the validate_assignment_rule tool do? +

validate_assignment_rule. It is categorised as a Execute tool in the ComplyOS MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on validate_assignment_rule? +

Register the ComplyOS MCP server in PolicyLayer and add a rule for validate_assignment_rule: 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 ComplyOS. Nothing to install.

What risk level is validate_assignment_rule? +

validate_assignment_rule is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit validate_assignment_rule? +

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

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

validate_assignment_rule is provided by the ComplyOS MCP server (simongonzalezdc/complyos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.