StarkNet Compiler

WHAT IT DOES

StarkNet Compiler enables developers to compile Cairo smart contracts for the StarkNet network. It reads and displays Cairo source code input with full contract structure support, compiler version information showing which Cairo version is used, compiler output with detailed compilation results, compilation status indicating success or failure, error messages with line numbers and descriptions, warning messages highlighting potential issues, contract class hash for contract identification, Sierra output representing the intermediate representation, CASM output for Cairo assembly, compiled bytecode for deployment, ABI output in JSON format for contract interaction, contract metadata including compiler settings and version, optimization settings controlling code generation, compiler configuration for different backends, dependency resolution status tracking imported modules, build logs showing the complete compilation process, compilation artifacts including intermediate files, contract size in bytes, gas estimation results for deployed functions, contract name identification, source file paths for multi-file projects, library dependencies showing external references, import resolution status for dependency management, builtin usage tracking Cairo builtins (pedersen, range_check, etc.), segment information for memory organization, relocatable values for program relocation, type checking results for type safety, and program analysis results for structural insights. All data is organized in a clean dashboard with source code input area, compilation results, and detailed build logs.

HOW TO USE

Enter your contract name and Cairo source code in the input area. Select the optimization level from the dropdown menu to control code generation. Click "Compile Contract" to start the compilation process. The tool will process the source code, resolve dependencies, and generate Sierra and CASM outputs. Results are displayed in organized cards showing compilation status, contract class hash, contract size, Sierra output, CASM output, ABI output, and gas estimate. The build logs section provides detailed compilation logs. The tool works with any Cairo contract that follows standard Cairo syntax and is compatible with StarkNet compilation targets.

THE MECHANISM

StarkNet Compiler performs client-side simulation of the Cairo compilation pipeline. The tool parses the input source code to identify contract structure, function definitions, and builtin usage. It validates the syntax and checks for common issues such as missing directives, incorrect builtin usage, and view function definitions. Based on the optimization level setting, the tool applies different compilation strategies — lower optimization levels prioritize compilation speed while higher levels focus on bytecode size and gas efficiency. The tool generates deterministic Sierra output representing the intermediate representation of the contract, and CASM output representing the Cairo assembly. The contract class hash is computed from the source code characteristics, producing a unique identifier for the contract. ABI output is generated in standard JSON format, capturing contract metadata including function signatures and parameter types. Gas estimation is performed by analyzing the complexity of functions and the number of operations. All compilation logs are captured and displayed in the build logs section, providing transparency into the compilation process. The tool also tracks builtin usage and provides type checking results.

WHAT IT CANNOT SEE

StarkNet Compiler cannot guarantee that the compiled contract will execute correctly on StarkNet without testing on a testnet, as the simulation environment may not replicate all edge cases. The tool cannot verify that the Cairo source code is secure or free from vulnerabilities, as security requires thorough manual review and auditing. It cannot detect runtime errors or logic bugs that only appear during execution, as static compilation cannot simulate all possible execution paths. The tool cannot ensure that the generated Sierra or CASM code is optimized for gas efficiency on all networks, as gas costs depend on network conditions and execution context. It cannot prove that the compiled contract matches the intended logic without formal verification. The tool also cannot detect subtle bugs in the source code that may only manifest under specific conditions.

PLEASE NOTE

StarkNet Compiler supports EVM-compatible chains only. The compiler is a client-side simulation tool and does not execute or deploy code to any blockchain. Compilation results are for development and testing purposes only — always test contracts thoroughly on StarkNet testnets before mainnet deployment. The tool is free to use and does not store or transmit any source code or compilation results off-device. Always review generated Sierra and CASM output before using in production environments.