submit_daml_exercise · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What submit_daml_exercise does on Tenzro Ledger MCP

AI agents invoke submit_daml_exercise 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 submit_daml_exercise needs a policy

This tool executes a DAML smart contract exercise command, which triggers logic on an existing contract. This is an Execute-category action as it runs contract code whose effects depend on the arguments passed.

From the tool's definition Submit a DAML ``exercise`` command on an existing contract

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

submit_daml_exercise Rate-limited

submit_daml_exercise 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": {
    "submit_daml_exercise": {
      "limits": [
        {
          "counter": "submit_daml_exercise_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 submit_daml_exercise

What does the submit_daml_exercise tool do? +

Submit a DAML exercise command on an existing contract. 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 submit_daml_exercise? +

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

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

Can I rate-limit submit_daml_exercise? +

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

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

submit_daml_exercise 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.