Individual skill

libafl

Use when a LibAFL fuzzer needs an executor, observer, feedback, mutator, scheduler, or objective composed around a target. Not for remote, credential, publish, deploy, or irreversible changes.

.devin/skills/libafl/SKILL.md

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# LibAFL custom fuzzer composition

## Contract

| Field | Bound contract |
|---|---|
| Trigger | User needs a custom LibAFL fuzzer, observer, feedback, mutator, scheduler, or executor composition. |
| Authority | Reversible local: writes named local Rust source artifacts, corpus entries, and objective findings under the output directory; rollback is deleting the generated crate, the output directory, or reverting VCS changes. No remote mutation. |
| Side effect | Local-write: creates or modifies Rust source files implementing the composed fuzzing engine and target integration, plus corpus entries and crash/timeout findings under the output directory. |
| Done | The composed LibAFL fuzzer compiles, runs the target, records coverage feedback, and persists objective findings to disk. |

## Inputs

- Target: the function, binary, or harness to fuzz. Required.