register_app · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What register_app does on Tenzro Ledger MCP

AI agents use register_app 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 register_app needs a policy

The tool creat es a new appl icat ion rec ord in Tenzr o's syst em, allo wing fut ure financia l and cust ody oper at ions. Misuse could regist er mal icious apps to acce ss wal let or pay ment servic es, but the direc t act is creat ion/wr it e, not immedia te fund movem ent (Financia l) or irrevoc abl e dest ruct ion.

From the tool's definition ' Regist er an appl icat ion' impl ies cre at ing or modi fying dat a (appl icat ion regist rat ion rec ord). Tenzr o Ledger MCP handl es ' wal let, ident ity, pay ment s' and 'cust ody' - int egrat ing wit h financia l syst ems.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

register_app Rate-limited

register_app 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": {
    "register_app": {
      "limits": [
        {
          "counter": "register_app_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 register_app

What does the register_app tool do? +

Register an application to use Tenzro custody and wallet services. 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 register_app? +

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

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

Can I rate-limit register_app? +

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

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

register_app 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.