# Lint

> Lint and format Kurtosis Starlark files. Check syntax, validate docstrings, and auto-format .star files. Use when writing or reviewing Starlark packages to ensure code quality.

- Skill: `kurtosis-tech/lint` (Agent Skill)
- Install (CLI): `npx skillmds@latest add kurtosis-tech/lint`
- Raw SKILL.md: https://api.skillmd.com/api/skills/kurtosis-tech/lint/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: kurtosis-tech (https://skillmd.com/u/kurtosis-tech)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/kurtosis-tech/lint

---


# Lint

Lint and format Kurtosis Starlark (.star) files.

## Check formatting

```bash
# Check a single file
kurtosis lint main.star

# Check a directory
kurtosis lint ./my-package/

# Check multiple files
kurtosis lint main.star lib.star helpers.star
```

Returns non-zero exit code if formatting issues are found.

## Auto-format

Fix formatting in place:

```bash
kurtosis lint -f main.star

# Format all files in a package
kurtosis lint -f ./my-package/
```

## Check docstrings

Validate that the main function has a proper docstring:

```bash
kurtosis lint -c ./my-package/main.star

# Or point to the package directory
kurtosis lint -c ./my-package/
```

This checks that the `run` function has a valid docstring describing its parameters.

## CI integration

```bash
# Check formatting (fails if not formatted)
kurtosis lint ./my-package/

# Check docstrings
kurtosis lint -c ./my-package/

# Fix-and-retry pattern: auto-fix, then re-lint to verify
kurtosis lint -f ./my-package/
kurtosis lint ./my-package/
```