$npx -y skills add flutter/agent-plugins --skill validReference fixture for dart_skills_lint. Demonstrates a SKILL.md that passes every default rule: hyphen-lowercase name matching the parent directory, a properly sized description, and no other frontmatter fields that would trigger the disallowed-field check.
| 1 | # Valid example skill |
| 2 | |
| 3 | This skill exists so the linter has a known-good fixture to validate |
| 4 | against. It deliberately does nothing useful — it's documentation. |
| 5 | |
| 6 | Run it with: |
| 7 | |
| 8 | ```bash |
| 9 | dart run dart_skills_lint --skill ./example/skills/valid |
| 10 | ``` |
| 11 | |
| 12 | Expected output: `Skill is valid.` and exit code 0. |