Haskell Smart Contract Analyzer
Free to download on every platform. Comes pre-installed on BotFone, BotPad and BotFlip — with extra free apps included.
About this app
WHAT IT DOES
Haskell Smart Contract Analyzer provides comprehensive static analysis for Haskell smart contract code. It reads and displays Haskell source code input with full analysis support, compilation status indicating successful parsing, error messages with detailed descriptions, warning messages highlighting potential issues, type checking results validating type safety across all functions, type inference output showing inferred types, contract function definitions extracted from the code, data type definitions identifying all custom types, pattern matching analysis for exhaustiveness checking, monad stack analysis for effect management, effect tracking for side-effect identification, state management patterns for stateful operations, contract entry points detection, validation logic analysis for input verification, mathematical proof attempts for formal verification, invariant detection for state consistency, pre/post-condition analysis for function contracts, gas usage estimation for cost analysis, optimization recommendations for performance improvements, code size metrics for contract footprint, import dependency graph for module relationships, library usage analysis for external dependencies, module structure for organization, function call graph for invocation patterns, recursion analysis for loop detection, termination checking for infinite recursion prevention, cost model results for resource planning, execution flow analysis for path coverage, contract composition analysis for modular design, and integration points detection for cross-contract interactions. All data is organized in a clean dashboard with source code display, analysis results, and detailed optimization recommendations.
HOW TO USE
Enter your Haskell source code in the input area. Click "Analyze Contract" to start the analysis process. The tool will parse the source code, perform type checking and inference, analyze monad stacks, detect invariants, and provide optimization recommendations. Results are displayed in organized cards showing compilation status, type checking results, function count, data types detected, monad stack analysis, gas estimates, and invariant detection. The analysis output section provides detailed logs including errors, warnings, and recommendations. The tool works with any Haskell code that follows standard Haskell syntax and can be used for smart contract development.
THE MECHANISM
Haskell Smart Contract Analyzer performs client-side static analysis of Haskell source code. The tool first parses the source code to identify the module structure, function definitions, data type declarations, and type signatures. It then validates the syntax and performs type inference by analyzing function signatures and type annotations. The type checker ensures type safety by verifying that all functions are correctly typed and that pattern matching covers all cases. Monad stack analysis identifies the monad transformers used in the code (such as State, Reader, Writer, IO, Maybe, Either) and analyzes the effect handling patterns. Invariant detection searches for validation conditions, assertions, and pre/post-condition annotations in the code. Gas estimation is performed by analyzing the complexity of functions, the number of operations, and the size of data structures. Optimization recommendations are generated by identifying patterns such as inefficient list operations (++), unnecessary traversals, and potential strictness issues. The tool also analyzes recursion patterns to detect potential non-terminating functions and suggests termination checks where needed.
WHAT IT CANNOT SEE
Haskell Smart Contract Analyzer cannot execute Haskell code on-chain to verify behavior against actual blockchain state, as it uses static analysis rather than runtime execution. The tool cannot detect runtime errors that only occur when executed in the actual on-chain environment, as these may depend on contract state and transaction context. It cannot verify that the Haskell code is secure or free from vulnerabilities without formal verification, which requires additional security analysis tools. The tool cannot guarantee that the analyzed code will behave identically when deployed to different compiler versions or runtime environments, as compiler optimizations may vary. It cannot predict actual gas costs accurately without on-chain context, as gas costs depend on network conditions and execution environment. The tool also cannot detect issues that only manifest under specific conditions or with particular inputs.
PLEASE NOTE
Haskell Smart Contract Analyzer supports EVM-compatible chains only. The tool is a client-side analysis tool and does not execute or deploy code to any blockchain. Analysis results are for development and testing purposes only — always test contracts thoroughly on test networks before mainnet deployment. The tool is free to use and does not store or transmit any source code or analysis results off-device. Always review analysis output and optimization recommendations carefully before relying on results.