tessl install tessl/pypi-crosshair-tool@0.0.0Analyze Python code for correctness using symbolic execution and SMT solving to automatically find counterexamples for functions with type annotations and contracts.
Agent Success
Agent success rate when using this tile
86%
Improvement
Agent success rate improvement when using this tile compared to baseline
1.25x
Baseline
Agent success rate without this tile
69%
Generated
Agent Claude Code
Scenario 1
Search and optimization for constraint solving
Scenario 2
Contract checking and verification with multiple syntax support
Scenario 3
Behavioral difference detection (diffbehavior) between implementations
Scenario 4
Plugin system for custom types and contracts
Scenario 5
Symbolic standard library implementations (64+ modules)
Scenario 6
Dynamic typing support with TypeVar binding
Scenario 7
Symbolic type system with proxy creation for Python types
Scenario 8
Runtime contract enforcement with decorators
Scenario 9
File watching and continuous analysis
Scenario 10
Test generation (cover) with automatic pytest output