Nostr SDK

Description

A high-level, Nostr client library written in Rust.

If you're writing a typical Nostr client or bot, this is likely the crate you need.

However, the crate is designed in a modular way and depends on several other lower-level crates. If you're attempting something more custom, you might be interested in these:

• nostr: Rust implementation of Nostr protocol
• nostr-sdk-net: Nostr SDK Network library

Getting started

toml [dependencies] nostr-sdk = "0.24" tokio = { version = "1", features = ["full"] }

```rust,no_run use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4};

use nostr_sdk::prelude::*;

[tokio::main]

async fn main() -> Result<()> { // Generate new keys let mykeys: Keys = Keys::generate(); // // or use your already existing // // From HEX or Bech32 // let mykeys = Keys::fromskstr("hex-or-bech32-secret-key")?;

// Show bech32 public key
let bech32_pubkey: String = my_keys.public_key().to_bech32()?;
println!("Bech32 PubKey: {}", bech32_pubkey);

// Create new client
let client = Client::new(&my_keys);

let proxy = Some(SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::LOCALHOST, 9050)));

// Add relays
client.add_relay("wss://relay.damus.io", None).await?;
client.add_relay("wss://relay.nostr.info", proxy).await?;
client.add_relay(
    "ws://jgqaglhautb4k6e6i2g34jakxiemqp6z4wynlirltuukgkft2xuglmqd.onion",
    proxy,
).await?;

// Connect to relays
client.connect().await;

let metadata = Metadata::new()
    .name("username")
    .display_name("My Username")
    .about("Description")
    .picture(Url::parse("https://example.com/avatar.png")?)
    .banner(Url::parse("https://example.com/banner.png")?)
    .nip05("username@example.com")
    .lud16("yuki@getalby.com")
    .custom_field("custom_field", Value::String("my value".into()));

// Update metadata
client.set_metadata(metadata).await?;

// Publish a text note
client.publish_text_note("My first text note from Nostr SDK!", &[]).await?;

// Create a POW text note
let event: Event = EventBuilder::new_text_note("POW text note from nostr-sdk", &[]).to_pow_event(&my_keys, 20)?;
client.send_event(event).await?;

// Send custom event
let event_id = EventId::from_bech32("note1z3lwphdc7gdf6n0y4vaaa0x7ck778kg638lk0nqv2yd343qda78sf69t6r")?;
let public_key = XOnlyPublicKey::from_bech32("npub14rnkcwkw0q5lnmjye7ffxvy7yxscyjl3u4mrr5qxsks76zctmz3qvuftjz")?;
let event: Event = EventBuilder::new_reaction(event_id, public_key, "🧡").to_event(&my_keys)?;

// Send custom event to all relays
// client.send_event(event).await?;

// Send custom event to a specific previously added relay
client.send_event_to("wss://relay.damus.io", event).await?;

Ok(())

} ```

More examples can be found in the examples/ directory.

WASM

This crate supports the wasm32 targets.

An example can be found at nostr-sdk-wasm-example repo.

On macOS you need to install llvm:

shell brew install llvm LLVM_PATH=$(brew --prefix llvm) AR="${LLVM_PATH}/bin/llvm-ar" CC="${LLVM_PATH}/bin/clang" cargo build --target wasm32-unknown-unknown

NOTE: Currently nip03 feature not support WASM.

Crate Feature Flags

The following crate feature flags are available:

| Feature | Default | Description | | ------------------- | :-----: | ---------------------------------------------------------------------------------------- | | blocking | No | Needed to use NIP-05 and NIP-11 features in not async/await context | | all-nips | Yes | Enable all NIPs | | nip03 | No | Enable NIP-03: OpenTimestamps Attestations for Events | | nip04 | Yes | Enable NIP-04: Encrypted Direct Message | | nip05 | Yes | Enable NIP-05: Mapping Nostr keys to DNS-based internet identifiers | | nip06 | Yes | Enable NIP-06: Basic key derivation from mnemonic seed phrase | | nip11 | Yes | Enable NIP-11: Relay Information Document | | nip44 | No | Enable NIP-44: Encrypted Payloads (Versioned) - EXPERIMENTAL | | nip46 | Yes | Enable NIP-46: Nostr Connect | | nip47 | Yes | Enable NIP-47: Nostr Wallet Connect |

Supported NIPs

Look at https://github.com/rust-nostr/nostr/tree/master/crates/nostr#supported-nips

State

This library is in an ALPHA state, things that are implemented generally work but the API will change in breaking ways.

License

This project is distributed under the MIT software license - see the LICENSE file for details

Donations

⚡ Tips: https://getalby.com/p/yuki

⚡ Lightning Address: yuki@getalby.com