Nostr Wallet Connect plugin for CLN

Allows you to create permissioned connections between your node and apps. Payment requests are sent over relays to your node.

⚠️⚠️ Still beta, use at your own risk. ⚠️⚠️

Supported methods

Starting the Plugin

First, make sure you have all the required packages installed. If using the nix instructions below you are good to go; otherwise, make sure everything in requirements.txt is installed.

Next, make sure the shebang (#!) at the top of nwc.py points to the python you just installed all those packages to.

There are 3 ways to start a CLN plugin...

Add to Your Config

Find your c-lightning config file and add

plugin=/path/to/nwc.py

Manually start the plugin

lightning-cli plugin start /path/to/nwc.py

Run on startup

lightningd --plugin=/path/to/nwc.py

Using the plugin

Create a new connection

lightning-cli nwc-create [budget_msat] [expiry_unix] will get you an NWC URI. This needs to be pasted into the app you are connecting with.

Apps can now send supported NIP 47 requests to your node. If the request is valid (not expired, budget not exceeded, etc.), your node will perform the requested action and return an NIP 47 response.

Keep budgets low and create new connections for each app.

List connections

lightning-cli nwc-list

Response:

{
   "connections": [
      {
         "url": "nostr+walletconnect://cbe4ec8861b8bca3da08e83251f035f212881f2c7c3ff54392eb5b00ceaff63b?relay=wss://relay.getalby.com/v1&secret=630fb05b1bde7dab927d964c8d5123e32560b6873c5eb37e2c5f84a217102434",
         "pubkey": "402deac84e04968d1a8cbaeac579119f87270e8efeaaac12febbce1d32857545",
         "expiry_unix": null,
         "remaining_budget_msat": "456234msat"
      },
  ]
}

Delete a connection

lightning-cli nwc-revoke

Response will be true if successful.

Running the dev environment

Get Nix

This project is nixified, so first make sure you have nix installed and experimental features turned on so that you can use the nix develop command.

Once nix is installed, clone the repo, and inside the project directory run:

nix develop

The first time you run this expect to wait for everything to download/build.

Now, you have bitcoin and lightning nodes, all the required packages, and shell variables defined!

Start, fund, and connect your nodes

Start nodes in regtest

Source the startup_regtest.sh script and then start 2 nodes.

source ./contrib/startup_regtest.sh

start_ln #default is 2 nodes

Start the plugin

The restart_plugin.sh script takes an optional argument to specify which node you want to start the plugin on.

./contrib/restart_plugin.sh 1 #start the plugin on node 1

NOTE: any changes to your plugin will require you to re-run this script.

Running the Tests

The tests are not automated right now.

What you will need to do is make sure you have two nodes running in regtest per the above instructions. When you run start_ln, you will get aliases for l1-cli and l2-cli. The value of these aliases needs to be pasted into the test files where l2 and baseCliCommand are specified.

Once you have specified the path to your node's cli, and you have 2 nodes running in your nix environment, the tests should run with npx jest.

WIP! Would be nice to add some CI, environment variables, etc. Also need to implement my own wallet requests rather than using the Alby library because it does not return the exact format of the received event.

NIP-47 Supported Methods

✅ NIP-47 info event

❌ expiration tag in requests

✅ get_info

• ⚠️ block_hash not supported

✅ pay_invoice

✅ pay_keysend

• ⚠️ preimage in request not supported
• ⚠️ tlv_records in request not supported

✅ make_invoice

• ⚠️ description hash not supported
• ⚠️ not all tx data is returned. Missing: description, description_hash, preimage, fees_paid, metadata

✅ get_balance

✅ lookup_invoice

✅ list_transactions

❌ multi_pay_invoice

❌ multi_pay_keysend