nostr

Nostr

Description

Rust implementation of Nostr protocol.

If you're writing a typical Nostr client or bot, you may be interested in nostr-sdk.

Getting started

[dependencies]
nostr = "0.19"
tungstenite = { version = "0.18", features = ["rustls-tls-webpki-roots"]}

use nostr::prelude::*;
use tungstenite::{Message as WsMessage};

fn main() -> Result<()> {
    // Generate new random keys
    let my_keys = Keys::generate();

    // or use your already existing
    //
    // From HEX or Bech32
    // let my_keys = Keys::from_sk_str("hex-or-bech32-secret-key")?;

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

    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("[email protected]")
        .lud16("[email protected]");

    let event: Event = EventBuilder::set_metadata(metadata).to_event(&my_keys)?;

    // New text note
    let event: Event = EventBuilder::new_text_note("Hello from Nostr SDK", &[]).to_event(&my_keys)?;

    // New POW text note
    let event: Event = EventBuilder::new_text_note("My first POW text note from Nostr SDK", &[]).to_pow_event(&my_keys, 20)?;

    // Connect to relay
    let (mut socket, _) = tungstenite::connect("wss://relay.damus.io").expect("Can't connect to relay");

    // Send msg
    let msg = ClientMessage::new_event(event).as_json();
    socket.write_message(WsMessage::Text(msg)).expect("Impossible to send message");

    Ok(())
}

More examples can be found in the examples/ directory.

WASM

This crate supports the wasm32 targets.

On macOS you need to install llvm:

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 you must disable nip03 feature to allow compilation on wasm targets.

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
vanity	No	Enable vanity public key mining module
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
nip19	Yes	Enable NIP-19: bech32-encoded entities
nip46	Yes	Enable NIP-46: Nostr Connect

Supported NIPs

Supported	NIP
✅	01 - Basic protocol flow description
✅	02 - Contact List and Petnames
✅	03 - OpenTimestamps Attestations for Events
✅	04 - Encrypted Direct Message
✅	05 - Mapping Nostr keys to DNS-based internet identifiers
✅	06 - Basic key derivation from mnemonic seed phrase
✅	09 - Event Deletion
✅	10 - Conventions for clients' use of e and p tags in text events
✅	11 - Relay Information Document
✅	12 - Generic Tag Queries
✅	13 - Proof of Work
✅	14 - Subject tag in text events
✅	15 - End of Stored Events Notice
✅	16 - Event Treatment
✅	18 - Reposts
✅	19 - bech32-encoded entities
✅	20 - Command Results
✅	23 - Long-form Content
✅	25 - Reactions
✅	26 - Delegated Event Signing
✅	28 - Public Chat
✅	33 - Parameterized Replaceable Events
✅	36 - Sensitive Content
✅	40 - Expiration Timestamp
✅	42 - Authentication of clients to relays
✅	46 - Nostr Connect
✅	50 - Keywords filter
✅	56 - Reporting
✅	65 - Relay List Metadata

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: [email protected]