Command JSON

estimate and simulate take a path to a Ledger API command payload. There is no required folder layout; pass the file path that fits your project.

{
  "commands": [{
    "CreateCommand": {
      "templateId": "#my-pkg:Main:MyTemplate",
      "createArguments": {
        "owner": "Alice::",
        "amount": "100.00",
        "label": "Example create"
      }
    }
  }],
  "userId": "ledger-api-user",
  "commandId": "unique-command-id",
  "actAs": ["Alice::"],
  "readAs": ["Alice::"]
}

Field	Meaning
commands	Create or exercise commands in Ledger API JSON form.
userId	Ledger API user id. Usually matches the JWT subject.
commandId	Unique id for this command attempt.
actAs	Submitting parties.
readAs	Additional read parties for disclosure.
synchronizerId	Optional. Use when the command must target one synchronizer.
#pkg:Module:Entity	Package-name template id. It resolves during prepare.

Exercise commands must contain real contract ids. Placeholder contract ids fail during prepare and appear as W011.