verify_delegation

THE RISK

Low Risk

Why verify_delegation needs a policy

The description is empty, so the tool's behavior must be inferred from its name alone. 'verify_delegation' suggests a read/validation operation checking whether a delegation of authority is valid, which would be a Read operation.

From the tool's definition Tool name is 'verify_delegation'; description is empty or uninformative.

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

POLICY

How to control verify_delegation

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "verify_delegation": {
      "limits": [
        {
          "counter": "verify_delegation_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

verify_delegation gets a rate cap, and everything else on the server is denied unless you say otherwise.

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

SET A RULE FOR THIS TOOL →

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EXPLORE

Related tools and policies

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about verify_delegation

What does the verify_delegation tool do? +

verify_delegation. It is categorised as a Other tool in the Agentos MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on verify_delegation? +

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

What risk level is verify_delegation? +

verify_delegation is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit verify_delegation? +

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

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

verify_delegation is provided by the Agentos MCP server (@microsoft/agentos-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agentos tool call.

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

CHECK YOUR STACK →