{"id":74008,"library":"xcm-simulator","title":"XCM Simulator","description":"Test kit to simulate cross-chain message passing and XCM execution","status":"active","version":"25.0.0","language":"rust","source_language":null,"source_url":"https://github.com/paritytech/polkadot-sdk","tags":["xcm","cross-chain","testing","polkadot"],"install":[{"cmd":"# Cargo.toml\n[dependencies]\nxcm-simulator = \"25.0.0\"","lang":"toml","label":"Cargo.toml"},{"cmd":"cargo add xcm-simulator","lang":"bash","label":"cargo add"}],"dependencies":[],"imports":[{"symbol":"TestExt","correct":"use xcm_simulator::TestExt;"}],"quickstart":{"code":"use xcm_simulator::TestExt;\n\nfn test() {\n    TestExt::execute_with(|| {\n        // simulate XCM execution\n    });\n}","lang":"rust","description":"Simulate cross-chain message passing in tests."},"warnings":[{"fix":"Ensure your runtime implements the required traits for XCM simulation.","message":"Requires specific runtime configuration","severity":"gotcha","affected_versions":">=25.0.0"}],"env_vars":null,"search_vec":"'chain':9,18 'cross':8,17 'cross-chain':7,16 'execut':14 'kit':4 'messag':10 'pass':11 'polkadot':20 'simul':2,6 'test':3,19 'xcm':1,13,15","created_at":"2026-06-17T18:57:45.274283+00:00","updated_at":"2026-06-17T18:57:45.274283+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/xcm-simulator/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["testing","networking"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-17","next_check":"2026-12-14","install_tag":null}}