Configures mewt or muton mutation testing campaigns — scopes targets, tunes timeouts, and optimizes long-running runs. Use when the user mentions mewt, muton, mutation testing, or wants to configure or optimize a mutation testing campaign.
Note: muton and mewt share identical interfaces but target different languages — mewt for general-purpose languages (Rust, Solidity, Go, TypeScript, JavaScript), muton for TON smart contracts (Tact, Tolk, FunC). All examples use
mewtcommands, but they work exactly the same withmuton. File names change accordingly:mewt.toml→muton.toml,mewt.sqlite→muton.sqlite.
Use this skill when the user:
mewt run and needs help getting set up firstDo not use this skill when the user:
Load workflows/configuration.md — a 5-phase guide from mewt init to a validated, ready-to-run campaign.
General question or unfamiliar command?
Run mewt --help or mewt <subcommand> --help, then assist.
| File | Content |
|---|---|
| workflows/configuration.md | 5-phase guide: init, scope, optimize, validate, run |
| references/optimization-strategies.md | Per-file targeting, two-phase campaigns, mutation type filtering |
# Initialize and mutate
mewt init # Create mewt.toml and mewt.sqlite
mewt mutate [paths] # Generate mutants without running tests
mewt run [paths] # Run the full campaign
# Inspect configuration and scope
mewt print config # View effective configuration
mewt print targets # Table of all targeted files
mewt print mutations --language [lang] # Available mutation types
mewt status # Mutant count and per-file breakdown
# Investigate specific mutants
mewt print mutants --target [path] # All mutants for a file
mewt print mutants --severity high # Filter by severity
mewt print mutant --id [id] # View mutated code diff
mewt test --ids [ids] # Re-test specific mutants