onboard_delegated_agent · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What onboard_delegated_agent does on Tenzro Ledger MCP

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

WHY IT NEEDS A POLICY

Why onboard_delegated_agent needs a policy

This tool creates/registers a new delegated agent identity authorized to act on behalf of a controller DID. It is a Write operation (creating a new agent record/identity), but carries high severity because it grants an agent authority to act on behalf of another identity, enabling potential privilege escalation or unauthorized actions if misused.

From the tool's definition Onboard an agent that acts on behalf of ``controller_did``

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

onboard_delegated_agent Rate-limited

onboard_delegated_agent 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": {
    "onboard_delegated_agent": {
      "limits": [
        {
          "counter": "onboard_delegated_agent_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 Tenzro Ledger MCP, so you can run agents against it safely.

FAQ

Questions about onboard_delegated_agent

What does the onboard_delegated_agent tool do? +

Onboard an agent that acts on behalf of controller_did. It is categorised as a Write tool in the Tenzro Ledger MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on onboard_delegated_agent? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for onboard_delegated_agent: 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 Tenzro Ledger MCP. Nothing to install.

What risk level is onboard_delegated_agent? +

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

Can I rate-limit onboard_delegated_agent? +

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

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

onboard_delegated_agent is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.