{"id":58981,"library":"substrate-wasm-builder","title":"Substrate WASM Builder","description":"Utility for building WASM binaries for Substrate-based blockchains.","status":"active","version":"32.0.0","language":"rust","source_language":null,"source_url":"https://github.com/paritytech/polkadot-sdk","tags":["substrate","wasm","blockchain","build-tool","polkadot"],"install":[{"cmd":"# Cargo.toml\n[dependencies]\nsubstrate-wasm-builder = \"32.0.0\"","lang":"toml","label":"Cargo.toml"},{"cmd":"cargo add substrate-wasm-builder","lang":"bash","label":"cargo add"}],"dependencies":[],"imports":[{"symbol":"WasmBuilder","correct":"use substrate_wasm_builder::WasmBuilder;"}],"quickstart":{"code":"use substrate_wasm_builder::WasmBuilder;\n\nfn main() {\n    WasmBuilder::new()\n        .with_current_project()\n        .export_heap_base()\n        .import_memory()\n        .build();\n}","lang":"rust","description":"Builds the WASM binary for the current Substrate runtime project."},"warnings":[{"fix":"Run `rustup target add wasm32-unknown-unknown`.","message":"Requires the `wasm32-unknown-unknown` target to be installed.","severity":"gotcha","affected_versions":">=0.0.0"}],"env_vars":null,"search_vec":"'base':12 'binari':8 'blockchain':13,16 'build':6,18 'build-tool':17 'builder':3 'polkadot':20 'substrat':1,11,14 'substrate-bas':10 'tool':19 'util':4 'wasm':2,7,15","created_at":"2026-06-16T16:46:08.889871+00:00","updated_at":"2026-06-16T16:46:08.889871+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://paritytech.github.io/polkadot-sdk/","github":"https://github.com/paritytech/polkadot-sdk","docs":"https://docs.rs/substrate-wasm-builder/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["build-tool","other"],"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}}