Nostr Wallet Connect

❗ We're working on a brand new version of NWC: Alby Hub.

❗ this project is not actively maintained and we focus on the next version of it: Alby Hub.

This application allows you to control your Lightning node or wallet over Nostr. Connect applications like Damus or Amethyst to your node.

Specification: NIP-47

Supported Backends

• Alby (see: alby.go)
• LND (see: lnd.go)
• want more? please open an issue.

Installation

Requirements

The application has no runtime dependencies. (simple Go executable).

As data storage SQLite or PostgreSQL (recommended) can be used.

$ cp .env.example .env
# edit the config for your needs
vim .env

To get a new random Nostr key use openssl rand -hex 32 or similar.

Development

go run . or gow -e=go,mod,html,css run . using gow

To build the CSS run:

1. npm install
2. npm run css

Testing

go test

Configuration parameters

• NOSTR_PRIVKEY: the private key of this service. Should be a securely randomly generated 32 byte hex string.
• CLIENT_NOSTR_PUBKEY: if set, this service will only listen to events authored by this public key. You can set this to your own nostr public key.
• RELAY: default: "wss://relay.getalby.com/v1"
• PUBLIC_RELAY: optional relay URL to be used in connection strings if RELAY is an internal URL
• LN_BACKEND_TYPE: ALBY or LND
• ALBY_CLIENT_SECRET= Alby OAuth client secret (used with the Alby backend)
• ALBY_CLIENT_ID= Alby OAuth client ID (used with the Alby backend)
• OAUTH_REDIRECT_URL= OAuth redirect URL (e.g. http://localhost:8080/alby/callback) (used with the Alby backend)
• LND_ADDRESS: the LND gRPC address, eg. localhost:10009 (used with the LND backend)
• LND_CERT_FILE: the location where LND's tls.cert file can be found (used with the LND backend)
• LND_MACAROON_FILE: the location where LND's admin.macaroon file can be found (used with the LND backend)
• COOKIE_SECRET: a randomly generated secret string.
• DATABASE_URI: a postgres connection string or sqlite filename. Default: nostr-wallet-connect.db (sqlite)
• PORT: the port on which the app should listen on (default: 8080)

Application deeplink options

/apps/new deeplink options

Clients can use a deeplink to allow the user to add a new connection. Depending on the client this URL has different query options:

NWC created secret

The default option is that the NWC app creates a secret and the user uses the nostr wallet connect URL string to enable the client application.

Query parameter options

• name: the name of the client app

Example:

/apps/new?name=myapp

Client created secret

If the client creates the secret the client only needs to share the public key of that secret for authorization. The user authorized that pubkey and no sensitivate data needs to be shared.

Query parameter options for /new

• name: the name of the client app
• pubkey: the public key of the client's secret for the user to authorize
• return_to: (optional) if a return_to URL is provided the user will be redirected to that URL after authorization. The lud16, relay and pubkey query parameters will be added to the URL.
• expires_at (optional) connection cannot be used after this date. Unix timestamp in seconds.
• max_amount (optional) maximum amount in sats that can be sent per renewal period
• budget_renewal (optional) reset the budget at the end of the given budget renewal. Can be never (default), daily, weekly, monthly, yearly
• request_methods (optional) url encoded, space separated list of request types that you need permission for: pay_invoice (default), get_balance (see NIP47). For example: ..&request_methods=pay_invoice%20get_balance

Example:

/apps/new?name=myapp&pubkey=47c5a21...&return_to=https://example.com

Web-flow: client created secret

Web clients can open a new prompt popup to load the authorization page. Once the user has authorized the app connection a nwc:success message is sent to the opening page (using postMessage) to indicate that the connection is authorized. See the initNWC() function in the alby-js-sdk

Example:

import { webln } from "alby-js-sdk";
const nwc = new webln.NWC();
// initNWC opens a prompt with /apps/new?c=myapp&pubkey=xxxx
// the promise resolves once the user has authorized the connection (when the `nwc:success` message is received) and the popup is closed automatically
// the promise rejects if the user cancels by closing the prompt popup
await nwc.initNWC({name: 'myapp'});

❓️ Help

• Discord Community
• Nostr
• Email
• Telegram

⚡️ Donations

Want to support the work on Alby?

Support the Alby team ⚡️hello@getalby.com You can also contribute to our bounty program: ⚡️bounties@getalby.com

NIP-47 Supported Methods

✅ NIP-47 info event

❌ expiration tag in requests

LND

✅ get_info

✅ get_balance

✅ pay_invoice

• ⚠️ amount not supported (for amountless invoices)

✅ pay_keysend

✅ make_invoice

✅ lookup_invoice

✅ list_transactions

• ⚠️ from and until in request not supported
• ⚠️ failed payments will not be returned

❌ multi_pay_invoice

❌ multi_pay_keysend (TBC)

Alby OAuth API

✅ get_info

• ⚠️ block_hash not supported
• ⚠️ block_height not supported
• ⚠️ pubkey not supported
• ⚠️ color not supported
• ⚠️ network is always mainnet

✅ get_balance

✅ pay_invoice

• ⚠️ amount not supported (for amountless invoices)

✅ pay_keysend

• ⚠️ preimage in request not supported

✅ make_invoice

• ⚠️ expiry in request not supported

✅ lookup_invoice

• ⚠️ fees_paid in response not supported

✅ list_transactions

• ⚠️ offset and unpaid in request not supported
• ⚠️ fees_paid in response not supported
• ⚠️ unsettled and failed transactions will not be returned

❌ multi_pay_invoice

❌ multi_pay_keysend (TBC)