Individual skill

vector-forge

Use when crypto implementations and a vector harness need mutation-driven cross-implementation test vector expansion. Not for Wycheproof: use wycheproof. Not for fuzzing: use fuzz-harness-writing.

.devin/skills/vector-forge/SKILL.md

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# Vector forge

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Existing cryptographic implementations and a vector-consuming harness need mutation-driven, cross-implementation test vector expansion. |
| Authority | Reversible local: writes only test vectors, reports, and mutation artifacts in the working directory; rollback is deleting those artifacts. No remote mutation. |
| Side effect | Local writes only: mutation logs, new test vectors in JSON, harness files colocated with each implementation, and a kill-rate report. |
| Done | Escaped mutants are classified by fault class, each new vector isolates one defect, vectors are cross-verified against two or more independent implementations, and a before/after kill-rate delta is reported. |

## Inputs

Required: