sicry_renew_identity

THE RISK

High Risk

Why sicry_renew_identity needs a policy

This tool triggers an external operation that changes the Tor network circuit and exit node, altering the agent's network identity. It has real operational side effects (changing routing/anonymity posture) and is not a simple read. It falls under Execute because it triggers an external network operation.

From the tool's definition Rotate Tor circuit — new exit node, fresh identity.

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

POLICY

How to control sicry_renew_identity

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

policy.json

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

sicry_renew_identity 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.

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

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 15 Sicry tools →

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Go deeper

High-risk tools in Sicry → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about sicry_renew_identity

What does the sicry_renew_identity tool do? +

Rotate Tor circuit — new exit node, fresh identity. It is categorised as a Execute tool in the Sicry MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on sicry_renew_identity? +

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

What risk level is sicry_renew_identity? +

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

Can I rate-limit sicry_renew_identity? +

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

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

sicry_renew_identity is provided by the Sicry MCP server (jacobjandon/sicry). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sicry tool call.

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

CHECK YOUR STACK →