.TH "LIGHTNING-OFFER" "7" "" "" "lightning-offer" .SH NAME lightning-offer - Command for accepting payments .SH SYNOPSIS \fIEXPERIMENTAL_FEATURES only\fR \fBoffer\fR \fIamount\fR \fIdescription\fR [\fIvendor\fR] [\fIlabel\fR] [\fIquantity_min\fR] [\fIquantity_max\fR] [\fIabsolute_expiry\fR] [\fIrecurrence\fR] [\fIrecurrence_base\fR] [\fIrecurrence_paywindow\fR] [\fIrecurrence_limit\fR] [\fIsingle_use\fR] .SH DESCRIPTION The \fBoffer\fR RPC command creates an offer, which is a precursor to creating one or more invoices\. It automatically enables the processing of an incoming invoice_request, and issuing of invoices\. The \fIamount\fR parameter can be the string "any", which creates an offer that can be paid with any amount (e\.g\. a donation)\. Otherwise it can be a positive value in millisatoshi precision; it can be a whole number, or a whole number ending in \fImsat\fR or \fIsat\fR, or a number with three decimal places ending in \fIsat\fR, or a number with 1 to 11 decimal places ending in \fIbtc\fR\. \fIamount\fR can also have an ISO 4217 postfix (i\.e\. USD), in which case currency conversion will need to be done for the invoice itself\. A plugin is needed which provides the "currencyconvert" API for this currency, otherwise the offer creation will fail\. The \fIdescription\fR is a short description of purpose of the offer, e\.g\. \fIcoffee\fR\. This value is encoded into the resulting offer and is viewable by anyone you expose this offer to\. It must be UTF-8, and cannot use \fI\u\fR JSON escape codes\. The \fIvendor\fR is another (optional) field exposed in the offer, and reflects who is issuing this offer (i\.e\. you) if appropriate\. The \fIlabel\fR field is an internal-use name for the offer, which can be any UTF-8 string\. The present of \fIquantity_min\fR or \fIquantity_max\fR indicates that the invoice can specify more than one of the items within this (inclusive) range\. The \fIamount\fR for the invoice will need to be multiplied accordingly\. These are encoded in the offer\. The \fIabsolute_expiry\fR is optionally the time the offer is valid until, in seconds since the first day of 1970 UTC\. If not set, the offer remains valid (though it can be deactivated by the issuer of course)\. This is encoded in the offer\. \fIrecurrence\fR means that an invoice is expected at regular intervals\. The argument is a positive number followed by one of "seconds", "minutes", "hours", "days", "weeks", "months" or "years" (variants without the trailing "s" are also permitted)\. This is encoded in the offer\. The semantics of recurrence is fairly predictable, but fully documented in BOLT 12\. e\.g\. "4weeks"\. \fIrecurrence_base\fR is an optional time in seconds since the first day of 1970 UTC, optionally with a "@" prefix\. This indicates when the first period begins; without this, the recurrence periods start from the first invoice\. The "@" prefix means that the invoice must start by paying the first period; otherwise it is permitted to start at any period\. This is encoded in the offer\. e\.g\. "@1609459200" indicates you must start paying on the 1st January 2021\. \fIrecurrence_paywindow\fR is an optional argument of form '-time+time[%]'\. The first time is the number of seconds before the start of a period in which an invoice and payment is valid, the second time is the number of seconds after the start of the period\. For example \fI-604800+86400\fR means you can fetch an pay the invoice 4 weeks before the given period starts, and up to 1 day afterwards\. The optional \fI%\fR indicates that the amount of the invoice will be scaled by the time remaining in the period\. If this is not specified, the default is that payment is allowed during the current and previous periods\. This is encoded in the offer\. \fIrecurrence_limit\fR is an optional argument to indicate the maximum period which exists\. eg\. "12" means there are 13 periods, from 0 to 12 inclusive\. This is encoded in the offer\. \fIrefund_for\fR is the payment_preimage of a previous (paid) invoice\. This implies \fIsend_invoice\fR and \fIsingle_use\fR\. This is encoded in the offer\. \fIsingle_use\fR (default false) indicates that the offer is only valid once; we may issue multiple invoices, but as soon as one is paid all other invoices will be expired (i\.e\. only one person can pay this offer)\. .SH RETURN VALUE On success, an object as follows is returned: .RS .IP \[bu] \fIoffer_id\fR: the hash of the offer\. .IP \[bu] \fIactive\fR: true .IP \[bu] \fIsingle_use\fR: true if \fIsingle_use\fR was specified\. .IP \[bu] \fIbolt12\fR: the bolt12 offer, starting with "lno1" .RE Optionally: .RS .IP \[bu] \fIlabel\fR: the user-specified label\. .RE On failure, an error is returned and no offer is created\. If the lightning process fails before responding, the caller should use \fBlightning-listoffers\fR(7) to query whether this offer was created or not\. The following error codes may occur: .RS .IP \[bu] -1: Catchall nonspecific error\. .IP \[bu] 1000: Offer with this offer_id already exists\. .RE .SH AUTHOR Rusty Russell \fI is mainly responsible\. .SH SEE ALSO \fBlightning-offerout\fR(7), \fBlightning-listoffers\fR(7), \fBlightning-deloffer\fR(7)\. .SH RESOURCES Main web site: \fIhttps://github.com/ElementsProject/lightning\fR \" SHA256STAMP:60534030c8c7ebc34b521a5bb5d76bd1d59e99ac80d16f5b0a9a3ac3bd164b48