canton_list_packages

List every DAML package installed on the participant via

SERVERTenzro Ledger MCP SOURCEhttps://canton-mcp.tenzro.network/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/network-tenzro-tenzro/canton-list-packages.md

WHAT IT DOES

What canton_list_packages does on Tenzro Ledger MCP

AI agents call canton_list_packages to retrieve information from Tenzro Ledger MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why canton_list_packages is rated Low

This tool retrieves and enumerates DAML packages, which is a read-only query operation with no capability to modify, delete, or execute code. The blast radius is minimal as it only exposes metadata about installed packages.

From the tool's definition Tool name contains 'list' and description states 'List every DAML package installed on the participant' — a query operation that retrieves information without modification or side effects.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs canton_list_packages safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Tenzro Ledger MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For canton_list_packages, this is the rule to start with:

canton_list_packages Allowed

canton_list_packages is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "canton_list_packages": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Tenzro Ledger MCP, apply this rule, and every canton_list_packages call is checked against it from then on.

FAQ

Questions about canton_list_packages

What does the canton_list_packages tool do? +

List every DAML package installed on the participant via. It is categorised as a Read tool in the Tenzro Ledger MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on canton_list_packages? +

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

canton_list_packages is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit canton_list_packages? +

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

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

canton_list_packages 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.

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