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cmd: addinvoice --qr to print invoice QR #10638

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cmd: addinvoice --qr to print invoice QR #10638

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011568b
cmd/commands: add --qr flag to addinvoice for terminal QR display
hieblmi Mar 9, 2026
663d4cb
docs: add release notes for addinvoice --qr flag
hieblmi Mar 9, 2026
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16 changes: 16 additions & 0 deletions cmd/commands/cmd_invoice.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,12 @@ package commands
import (
"encoding/hex"
"fmt"
"os"
"strconv"
"strings"

"github.com/lightningnetwork/lnd/lnrpc"
qrterminal "github.com/mdp/qrterminal/v3"
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@saubyk saubyk Mar 16, 2026

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what's our policy on adding new libraries?

"github.com/urfave/cli"
"google.golang.org/protobuf/proto"
)
Expand Down Expand Up @@ -124,6 +126,11 @@ var AddInvoiceCommand = cli.Command{
"id (separated by commas), starting from a " +
"channel which points to the self node.",
},
cli.BoolFlag{
Name: "qr",
Usage: "display a QR code of the payment request " +
"in the terminal",
},
},
Action: actionDecorator(addInvoice),
}
Expand Down Expand Up @@ -202,6 +209,15 @@ func addInvoice(ctx *cli.Context) error {

printRespJSON(resp)

if ctx.Bool("qr") {
// If the user requested it, we'll also print a QR code that
// encodes the payment request for easy scanning.
fmt.Println()
qrterminal.GenerateHalfBlock(
resp.PaymentRequest, qrterminal.L, os.Stdout,
)
}
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return nil
}

Expand Down
5 changes: 5 additions & 0 deletions docs/release-notes/release-notes-0.21.0.md
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Expand Up @@ -286,6 +286,11 @@
* The `encryptdebugpackage` command now supports an `--include_log` flag. When
set, the log file content is included in the encrypted debug package.

* The `addinvoice` command now supports a [`--qr`
flag](https://github.com/lightningnetwork/lnd/pull/10638) that renders the
payment request as a QR code directly in the terminal, making it easy to scan
from a mobile wallet.

## Breaking Changes

* [Increased MinCLTVDelta from 18 to
Expand Down
2 changes: 2 additions & 0 deletions go.mod
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Expand Up @@ -125,6 +125,7 @@ require (
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mattn/go-runewidth v0.0.13 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/mdp/qrterminal/v3 v3.2.1
github.com/moby/docker-image-spec v1.3.1 // indirect
github.com/moby/term v0.5.0 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
Expand Down Expand Up @@ -194,6 +195,7 @@ require (
modernc.org/sqlite v1.29.10 // indirect
modernc.org/strutil v1.2.0 // indirect
modernc.org/token v1.1.0 // indirect
rsc.io/qr v0.2.0 // indirect
sigs.k8s.io/yaml v1.2.0 // indirect
)

Expand Down
4 changes: 4 additions & 0 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -343,6 +343,8 @@ github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4
github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/mdp/qrterminal/v3 v3.2.1 h1:6+yQjiiOsSuXT5n9/m60E54vdgFsw0zhADHhHLrFet4=
github.com/mdp/qrterminal/v3 v3.2.1/go.mod h1:jOTmXvnBsMy5xqLniO0R++Jmjs2sTm9dFSuQ5kpz/SU=
github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg=
github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4=
github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
Expand Down Expand Up @@ -713,5 +715,7 @@ modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
pgregory.net/rapid v1.2.0 h1:keKAYRcjm+e1F0oAuU5F5+YPAWcyxNNRK2wud503Gnk=
pgregory.net/rapid v1.2.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
rsc.io/qr v0.2.0 h1:6vBLea5/NRMVTz8V66gipeLycZMl/+UlFmk8DvqQ6WY=
rsc.io/qr v0.2.0/go.mod h1:IF+uZjkb9fqyeF/4tlBoynqmQxUoPfWEKh921coOuXs=
sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
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