rotate_validator_key · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What rotate_validator_key does on Tenzro Ledger MCP

AI agents invoke rotate_validator_key to trigger actions in Tenzro Ledger MCP. 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 rotate_validator_key needs a policy

Rotating a validator key in a staking/ledger context typically replaces cryptographic keys used for consensus validation, which is a high-impact, potentially irreversible operational action. However, the description is empty, so confidence is low.

From the tool's definition Tool name: rotate_validator_key; description is empty/uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rotate_validator_key Rate-limited

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

FAQ

Questions about rotate_validator_key

What does the rotate_validator_key tool do? +

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

How do I enforce a policy on rotate_validator_key? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for rotate_validator_key: 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 rotate_validator_key? +

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

Can I rate-limit rotate_validator_key? +

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

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

rotate_validator_key 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.