sana / sana is on Nostr

Building freedom tech — nopu (Nostr push client) · Go & Swift

Last Notes

2025-07-02 07:41:49

Update nopu System Architecture to make it clearer.
https://blossom.primal.net/3b2b7b941f342a2f8267d5f27779ace745e96018174e8cf7b0510d4b8e6eb19d.jpg
Subscription Server
-Self-hostable
-Subscribes to relay events
-Receives client subscriptions
nopu Push Server
-Receives messages from Subscription Server
-Forwards via FCM/APNs
nopu Clients (iOS / Android)
-Display push messages
-Send subscriptions to Subscription Server
#nevent1q…7h6u

2025-07-01 16:58:30

- reply

Thanks a lot! Really appreciate it

2025-07-01 16:48:03

- reply

Thanks for your reply, hodlbod. I’m really glad to be able to discuss this with nostr devs.
Regarding the auth-gated relay, I’ve thought about this too. I think the simplest approach is to grant permission directly to the push server’s pubkey — since if you want the push server to deliver notifications, it does need a certain level of access. Especially for NIP-29 closed groups, you could just add the push server’s pubkey into the group. And if there are privacy concerns, people can self-host their own push server.
About the `h` tag — great suggestion, I’ll seriously consider changing that.
For the self-hosted server idea, my initial design for the backend looks like this:
self-hosted server → distributor server (with FCM/APNs certificates) → distributor clients.
This way, we can avoid having self-hosted push server manage its own push certificates.
So my nopu client would work somewhat like nfty.sh, acting as a push distributor, but specifically for nostr.
I’ll definitely take a closer look at the PRs you mentioned, as well as anchor and the pokey client. There’s still a lot I need to learn about nostr.

2025-07-01 06:48:54

Nopu v0.1 build 4 update:
-Support for custom emoji display
-Improved notification with user display names
-Bug fixes
https://testflight.apple.com/join/6teuaTGG
#nevent1q…7h6u

2025-06-25 17:07:20

Draft roadmap for nopu-ios
### Completed
- Subscribe to any topic with fully customizable filters, just like the Nostr `REQ` filter grammar
- iOS APNs push notifications
- In-app notification & event persistence
### Planned / In Progress
- More user-friendly notification previews
- Advanced, fine-grained filter builder
- More robust relay reconnection mechanism
- Support for custom push servers
- User account with the ability to restore topics

2025-06-25 03:43:52

- reply

I just submitted a PR for the invite code feature, hope it helps:
https://github.com/fiatjaf/relay29/pull/20
I really like NIP-29. NIP-29 is not only great for group chat management, but it can also be used for many other things. For example, in my project nopu, I use it for push subscription management.

2025-06-21 17:26:48

Hi #Nostr!
I'm a developer working with Go and Swift, and today I'm excited to announce the launch of my first Nostr client — Nopu.
Nopu is a free and open-source push notification service built on Nostr. Think of it as ntfy.sh for Nostr — you can define custom filters to receive flexible, personalized push notifications from any event source on the nostr network.
In the future you can also self-host your own push service and config your client, giving you full control over how and where notifications are delivered.
The project is now open source:
* Backend (Go): https://github.com/sanah9/nopu
* iOS Client (Swift): https://github.com/sanah9/nopu-ios
TestFlight is also available for anyone who'd like to try it out:
https://testflight.apple.com/join/6teuaTGG
Feedback and contributions are very welcome!
#Grownostr

2025-06-10 07:06:32

so bad...
#nevent1q…g6zt