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fizz

Generate Echidna/Medusa-compatible Solidity fuzz suites from Foundry or Hardhat projects. Trigger on "fizz", "generate fuzz suite", "build fuzz harness", "stateful fuzzing", "fuzzing harness", "property testing", and "invariant suite".

skills/fizz/SKILL.md

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# Fizz

Generate a stateful Solidity fuzz suite under `{SUITE_DIR}` (default: `test/fizz/`), with metadata and fuzzer runtime files under `{META_DIR}` (default: `fizz_data/`).

Use `Echidna` and `Medusa` for invariant campaigns. Use `Foundry` for compilation, smoke testing, and quick debugging.

Vendored from the Pashov Audit Group's open-source approach (`github.com/pashov/skills`), skill `fizz`, **VERSION 1** (see the `VERSION` file alongside this one). The `scripts/`, `templates/`, `references/`, and `agents/` directories are upstream code carried over intact; the only local adaptations are the x-ray acquisition path in Step 3 (EVM Cortex ships the methodology as the `xray-pre-audit` skill) and the companion-skill locations noted below. Check for a newer upstream revision before relying on this:

```bash
curl -sf https://raw.githubusercontent.com/pashov/skills/main/fizz/VERSION
```

### Relationship to other EVM Cortex skills