core-lightning/doc/schemas/openchannel_update.schema.json

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "type": "object",
    "additionalProperties": false,
    "required": [ "channel_id", "psbt", "commitments_secured", "funding_outnum" ],
    "properties": {
	"channel_id": {
	    "type": "hex",
	    "description": "the channel id of the channel",
	    "maxLength": 64,
	    "minLength": 64
	},
	"psbt": {
	    "type": "string",
	    "description": "the PSBT of the funding transaction"
	},
	"commitments_secured": {
	    "type": "boolean",
	    "description": "whether the *psbt* is complete (if true, sign *psbt* and call `openchannel_signed` to complete the channel open)"
	},
	"funding_outnum": {
	    "type": "u32",
	    "description": "The index of the funding output in the psbt"
	},
	"close_to": {
	    "type": "hex",
	    "description": "scriptPubkey which we have to close to if we mutual close"
	}
    }
}