Individual skill
mutation-campaign-configuration
Use when asked to initialize, scope, estimate, configure, validate, or optimize a mewt, muton, or mutation testing campaign before execution. Writes the TOML config. Not for running it: use the mewt CLI.
.devin/skills/mutation-campaign-configuration/SKILL.md
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- Last checked
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- Sep 28, 2026
- License
- Apache-2.0
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# Mutation campaign configuration
## Contract
| Field | Bound contract |
|---|---|
| Trigger | The user mentions mutation testing, mewt, or muton and asks to initialize, scope, estimate, configure, validate, or optimize a campaign before execution. |
| Authority | Reversible local: writes only `mewt.toml` or `muton.toml`; rollback is restoring the prior TOML from version control or a pre-edit snapshot. No remote mutation. Does not create or modify the accompanying SQLite database, generate mutants, or touch source files. |
| Side effect | Create or update `mewt.toml` or `muton.toml`; inspect target files and estimate mutant scope read-only; measure test duration; validate readiness without interpreting completed campaign results. |
| Done | Configuration parses, intended source targets and mutant counts are estimated, test commands pass, timeout policy is justified by measurement, estimated duration is acceptable, and the project is ready for a separate campaign run. |
## Inputs
- Required: Working directory containing a codebase to mutate, or an explicit `--config` path to an existing `mewt.toml`/`muton.toml`.