{"id":58965,"library":"subxt","title":"Subxt","description":"Submit extrinsics (transactions) to a substrate node via RPC","status":"active","version":"0.50.0","language":"rust","source_language":null,"source_url":"https://github.com/paritytech/subxt","tags":["substrate","polkadot","blockchain","rpc","extrinsics"],"install":[{"cmd":"# Cargo.toml\n[dependencies]\nsubxt = \"0.50.0\"","lang":"toml","label":"Cargo.toml"},{"cmd":"cargo add subxt","lang":"bash","label":"cargo add"}],"dependencies":[],"imports":[{"symbol":"OnlineClient","correct":"use subxt::OnlineClient;"}],"quickstart":{"code":"use subxt::OnlineClient;\nuse subxt::PolkadotConfig;\n\n#[tokio::main]\nasync fn main() -> Result<(), Box<dyn std::error::Error>> {\n    let api = OnlineClient::<PolkadotConfig>::from_url(\"ws://localhost:9944\").await?;\n    println!(\"Connected\");\n    Ok(())\n}","lang":"rust","description":"Connect to a Substrate node and submit extrinsics"},"warnings":[{"fix":"Add tokio as dependency and use #[tokio::main]","message":"Requires async runtime (tokio or async-std)","severity":"gotcha","affected_versions":">=0.0.0"}],"env_vars":null,"search_vec":"'blockchain':13 'extrins':3,15 'node':8 'polkadot':12 'rpc':10,14 'submit':2 'substrat':7,11 'subxt':1 'transact':4 'via':9","created_at":"2026-06-16T16:45:18.642197+00:00","updated_at":"2026-06-16T16:45:18.642197+00:00","problems":[],"ecosystem":"crates","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://www.parity.io/","github":"https://github.com/paritytech/subxt","docs":"https://docs.rs/subxt/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["networking","crypto"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-16","next_check":"2026-12-13","install_tag":null}}