Submarine swaps via JSON-RPC API?

[electrumiyut]

How can one automate doing submarine swaps via the JSON-RPC API? I am writing a liquidity helper script for Bitcart (similar to BTCPay Server) that uses an electrum wallet under the hood.

I see there is get_submarine_swap_providers(), but when I try to run this command on my wallet I get

Error: RPC Error: {'code': -32601, 'message': 'Procedure not found'}

I can run it in the console fine in my other electrum wallets.

Does it have to be enabled somehow? Or is this just not supported in the JSON-RPC API? I don't have GUI access to the wallet running underneath bitcart, just JSON-RPC access.

[nc50lc]

I can run it in the console fine in my other electrum wallets.

That RPC command "get_submarine_swap_providers()" was only added recently in the latest version 4.6.2.
Is the Electrum backend that you're using updated to the latest version?

You can check it in the release notes, here: github.com/spesmilo/electrum/blob/master/RELEASE-NOTES

[electrumiyut]

Aah yes, that would be the reason 

I'll work to get us updated to the newest version

In the GUI, one must enable nostr. In the API, is there anything I need to do before running get_submarine_swap_providers()?

[nc50lc]

-snip- is there anything I need to do before running get_submarine_swap_providers()?

The command just requires a loaded wallet,
Nostr should be enabled by default and loaded with pre-configured Nostr relays where those swap providers are queried from.

And for the dependencies, if you're running from python source; your secp256k1 should be compiled with schnorrsig module enabled.
Else, the daemon will run but the command wont work.

[electrumiyut]

Great thanks for all the help!