Qlty Check Agent Skill

by vibeeval

Code quality checks, formatting, and metrics via qlty CLI

636 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

521

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/vibeeval/vibecosystem --skill qlty-check

The instruction itself

11 sections, as written by the author

Qlty Code Quality

Universal code quality tool supporting 70+ linters for 40+ languages via qlty CLI.

When to Use

Check code for linting issues before commit/handoff
Auto-fix formatting and style issues
Calculate code metrics (complexity, duplication)
Find code smells

Quick Reference

# Check changed files with auto-fix
uv run python -m runtime.harness scripts/qlty_check.py --fix

# Check all files
uv run python -m runtime.harness scripts/qlty_check.py --all

# Format files
uv run python -m runtime.harness scripts/qlty_check.py --fmt

# Get metrics
uv run python -m runtime.harness scripts/qlty_check.py --metrics

# Find code smells
uv run python -m runtime.harness scripts/qlty_check.py --smells

Parameters

| Parameter | Description |

|-----------|-------------|

| --check | Run linters (default) |

| --fix | Auto-fix issues |

| --all | Process all files, not just changed |

| --fmt | Format files instead |

| --metrics | Calculate code metrics |

| --smells | Find code smells |

| --paths | Specific files/directories |

| --level | Min issue level: note/low/medium/high |

| --cwd | Working directory |

| --init | Initialize qlty in a repo |

| --plugins | List available plugins |

Common Workflows

After Implementation

# Auto-fix what's possible, see what remains
uv run python -m runtime.harness scripts/qlty_check.py --fix

Quality Report

# Get metrics for changed code
uv run python -m runtime.harness scripts/qlty_check.py --metrics

# Find complexity hotspots
uv run python -m runtime.harness scripts/qlty_check.py --smells

Initialize in New Repo

uv run python -m runtime.harness scripts/qlty_check.py --init --cwd /path/to/repo

Direct CLI (if qlty installed)

# Check changed files
qlty check

# Auto-fix
qlty check --fix

# JSON output
qlty check --json

# Format
qlty fmt

Requirements

qlty CLI: https://github.com/qltysh/qlty
MCP server: servers/qlty/server.py wraps CLI
Config: .qlty/qlty.toml in repo (run qlty init first)

vs Other Tools

| Tool | Use Case |

|------|----------|

| qlty | Unified linting, formatting, metrics for any language |

| ast-grep | Structural code patterns and refactoring |

| morph | Fast text search |

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How to use it

Copy the folder

Take vibeeval/qlty-check from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.