core-lightning/doc/schemas/lightning-txprepare.json

{
  "$schema": "../rpc-schema-draft.json",
  "type": "object",
  "additionalProperties": false,
  "rpc": "txprepare",
  "title": "Command to prepare to withdraw funds from the internal wallet",
  "description": [
    "The **txprepare** RPC command creates an unsigned transaction which spends funds from Core Lightning's internal wallet to the outputs specified in *outputs*.",
    "",
    "**txprepare** is similar to the first part of a **withdraw** command, but supports multiple outputs and uses *outputs* as parameter. The second part is provided by **txsend**."
  ],
  "request": {
    "required": [
      "outputs"
    ],
    "properties": {
      "outputs": {
        "type": "array",
        "description": [
          "Format is like: [{destination1: amount1}, {destination2: amount2}] or [{destination: *all*}]. It supports any number of **confirmed** outputs."
        ],
        "items": {
          "type": "outputdesc"
        }
      },
      "feerate": {
        "type": "feerate",
        "description": [
          "Used for the transaction as initial feerate."
        ],
        "default": "*normal*"
      },
      "minconf": {
        "type": "u32",
        "description": [
          "The minimum number of confirmations that used outputs should have."
        ],
        "default": 1
      },
      "utxos": {
        "type": "array",
        "description": [
          "To be used to fund the transaction, as an array of `txid:vout`. These must be drawn from the node's available UTXO set."
        ],
        "items": {
          "type": "outpoint"
        }
      }
    }
  },
  "response": {
    "required": [
      "psbt",
      "unsigned_tx",
      "txid"
    ],
    "properties": {
      "psbt": {
        "type": "string",
        "description": [
          "The PSBT representing the unsigned transaction."
        ]
      },
      "unsigned_tx": {
        "type": "hex",
        "description": [
          "The unsigned transaction."
        ]
      },
      "txid": {
        "type": "txid",
        "description": [
          "The transaction id of *unsigned_tx*; you hand this to lightning-txsend(7) or lightning-txdiscard(7), as the inputs of this transaction are reserved."
        ]
      }
    }
  },
  "errors": [
    "On failure, an error is reported and the transaction is not created.",
    "",
    "- -1: Catchall nonspecific error.",
    "- 301: There are not enough funds in the internal wallet (including fees) to create the transaction.",
    "- 302: The dust limit is not met."
  ],
  "author": [
    "Rusty Russell <<rusty@rustcorp.com.au>> is mainly responsible."
  ],
  "see_also": [
    "lightning-withdraw(7)",
    "lightning-txsend(7)",
    "lightning-txdiscard(7)",
    "lightning-feerates(7)"
  ],
  "resources": [
    "Main web site: <https://github.com/ElementsProject/lightning>"
  ],
  "examples": [
    {
      "request": {
        "id": "example:txprepare#1",
        "method": "txprepare",
        "params": [
          [
            {
              "bcrt1q5ptrvwlgcldm2ygf3nzsl09zfpp7dmtduqlczer97xvc4x5z5zwsc2ulv4": 16777216
            }
          ]
        ]
      },
      "response": {
        "unsigned_tx": "0200000001974bc23173b7bca9b060dac12abd1bb158e8ed69a3e74d4f6af5919b15f5772c0100000000fdffffff020000000100000000220020a056363be8c7dbb511098cc50fbca24843e6ed6de03f816465f1998a9a82a09d4183980000000000225120f1393467c717cd50de2760167d4311141a8f750c89f54fd2c900601a7da8434c95000000",
        "txid": "cafef1e6936d05584c8406e9ec5e9631b03513fe8b2a0444c5824e1a1f3d7c67",
        "psbt": "cHNidP8BAgQCAAAAAQMElQAAAAEEAQEBBQECAQYBAwH7BAIAAAAAAQBxAgAAAAFpz79e9wou5mbmtaiB+6WfRTf8SpZxmrd6n+rIFcWewQAAAAAA/f///wLS79/eAAAAABYAFE35CMxYA4yQx9XLuFj0/q5uNmligJaYAQAAAAAWABT/hTPq8LE5vAc9KiJjjmygoIN81UsAAAABAR+AlpgBAAAAABYAFP+FM+rwsTm8Bz0qImOObKCgg3zVAQ4gl0vCMXO3vKmwYNrBKr0bsVjo7Wmj501PavWRmxX1dywBDwQBAAAAARAE/f///wABAwgAAAABAAAAAAEEIgAgoFY2O+jH27URCYzFD7yiSEPm7W3gP4FkZfGZipqCoJ0AAQMIQYOYAAAAAAABBCJRIPE5NGfHF81Q3idgFn1DERQaj3UMifVP0skAYBp9qENMAA=="
      }
    },
    {
      "request": {
        "id": "example:txprepare#2",
        "method": "txprepare",
        "params": {
          "outputs": [
            {
              "bcrt1q4hz6a4gtecfmy8z870cwkq2gzc0t7n9u9pu23689u55ghwewemqsv4v2zs": 16777216
            }
          ]
        }
      },
      "response": {
        "unsigned_tx": "0200000001974bc23173b7bca9b060dac12abd1bb158e8ed69a3e74d4f6af5919b15f5772c0100000000fdffffff020000000100000000220020adc5aed50bce13b21c47f3f0eb0148161ebf4cbc2878a8e8e5e5288bbb2ecec1418398000000000022512081da0d3e3051135a89e2f9d85e2eadf661f959bfb05e671097854672cfd0ac7d95000000",
        "txid": "ed6c309a10273aa036d29b71cf70202291d4d4b72be353ac410e1678ecfbf74e",
        "psbt": "cHNidP8BAgQCAAAAAQMElQAAAAEEAQEBBQECAQYBAwH7BAIAAAAAAQBxAgAAAAFpz79e9wou5mbmtaiB+6WfRTf8SpZxmrd6n+rIFcWewQAAAAAA/f///wLS79/eAAAAABYAFE35CMxYA4yQx9XLuFj0/q5uNmligJaYAQAAAAAWABT/hTPq8LE5vAc9KiJjjmygoIN81UsAAAABAR+AlpgBAAAAABYAFP+FM+rwsTm8Bz0qImOObKCgg3zVAQ4gl0vCMXO3vKmwYNrBKr0bsVjo7Wmj501PavWRmxX1dywBDwQBAAAAARAE/f///wABAwgAAAABAAAAAAEEIgAgrcWu1QvOE7IcR/Pw6wFIFh6/TLwoeKjo5eUoi7suzsEAAQMIQYOYAAAAAAABBCJRIIHaDT4wURNaieL52F4urfZh+Vm/sF5nEJeFRnLP0Kx9AA=="
      }
    }
  ]
}