Agent skill

Lint And Validate

by sickn33 in sickn33/agentic-awesome-skills

Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results.

MITAuto-check passedDevelopment

Install Lint And Validate

skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill lint-and-validate -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install sickn33/agentic-awesome-skills lint-and-validate --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/lint-and-validate .claude/skills/lint-and-validate && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
lint-and-validate
GitHub stars
47k
Used in
1 other repo
Token cost
~814 tokens
SKILL.md length
429 words
Files
3 (incl. scripts)
Skills in repo
1,493
Repo updated
First seen
Licence
MIT

At a glance

Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results.

  • Works in 5 steps: Identify the changed languages,… → Run the project's read-only… → For Python, use configured, already… → …
  • Tasks that involve Linting and formatting
  • SKILL.md covers When to Use, Procedure, Example and Bundled helpers, plus 1 more section
  • Runs Python scripts from its folder; calls npm, python and ruff

What it does

Lint And Validate is an agent skill from sickn33/agentic-awesome-skills. Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results.

Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/lint_runner.py` and `scripts/type_coverage.py`).

It sits in Development, covering Linting and formatting. It works with npm and Python. The repository describes itself as: AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes… The licence is MIT.

When your agent uses it

  • Tasks that involve Linting and formatting

Example prompts

  • “/lint-and-validate”

Requirements

  • Python 3

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Identify the changed languages, configured commands, and installed tools. Inspect package scripts before executing them: a script named…
  2. Run the project's read-only lint/type-check commands. For Node projects, prefer declared scripts such as npm run lint and npm run…
  3. For Python, use configured, already installed tools such as ruff check . or mypy .. Do not assume every pyproject.toml configures both…
  4. Fix relevant failures without deleting user work, weakening rules, or raising timeouts just to pass. If a required tool is unavailable…
  5. Report commands, exit results, scope and remaining limitations. Passing lint does not prove the absence of runtime or security defects.

What it can do on your machine

Read from SKILL.md and the folder at commit 680176d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • npm
    • python
    • ruff
    • mypy

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Lint And Validate loads about 814 tokens when it runs. Until then it costs about 36 tokens; SKILL.md has 429 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~36
When it runs · the whole SKILL.md, loaded when a task matches
~814

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from sickn33/agentic-awesome-skills at commit 680176d, republished under its MIT licence (© sickn33). 429 words, ~814 tokens.

Download SKILL.mdSave it as .claude/skills/lint-and-validate/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
lint-and-validate
description
Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results.
risk
critical
source
community
date_added
2026-02-27

Lint and Validate

When to Use

Use after behavior or configuration changes when a repository has relevant lint or type checks. Read the repository's instructions and package scripts first. Run focused checks during development and the required checks before completion.

Procedure

  1. Identify the changed languages, configured commands, and installed tools. Inspect package scripts before executing them: a script named lint can modify files or run arbitrary project code.
  2. Run the project's read-only lint/type-check commands. For Node projects, prefer declared scripts such as npm run lint and npm run typecheck. Do not use npx to silently fetch an absent checker.
  3. For Python, use configured, already installed tools such as ruff check . or mypy .. Do not assume every pyproject.toml configures both. Never add --fix without inspecting the proposed changes and the task's authorization.
  4. Fix relevant failures without deleting user work, weakening rules, or raising timeouts just to pass. If a required tool is unavailable, report the exact check that did not run.
  5. Report commands, exit results, scope and remaining limitations. Passing lint does not prove the absence of runtime or security defects.

Example

After correcting a TypeScript behavior, inspect package.json, run the configured focused regression test, then npm run lint and npm run typecheck if those scripts exist. If TypeScript is declared but not installed, report the missing local checker; do not substitute a downloaded package or call the result a pass.

Show full SKILL.md (194 more words)Show less

Bundled helpers

  • python scripts/lint_runner.py /absolute/project: runs a conservative set of candidate checks. Node fallback checkers must exist in local node_modules/.bin; Python candidates must be installed. Inspect the project scripts first. A missing command or failing check exits 1; no configured checks or invalid project metadata exits 2. Exit 0 means the invoked checks passed, not that every needed check was discovered. Python detection is heuristic and may suggest unconfigured Ruff/MyPy commands.
  • python scripts/type_coverage.py /absolute/project: read-only annotation inventory, despite its retained compatibility filename. Samples at most 30 files per language, skips links and build/dependency directories, and bounds file reads. Python uses AST nodes to avoid double-counting functions. TypeScript reports lexical : any occurrences, including possible comments and strings. No quality percentage or pass/fail threshold is inferred. Exit 2 means no applicable files; parse/read errors exit 1.

Limitations

The runner executes trusted project commands, which may mutate files or access the network. It does not install dependencies, detect every monorepo configuration, or replace the project's CI contract. The inventory is a bounded source sample, not semantic type coverage; inferred types, generics, decorator behavior and correctness require the actual type checker. Do not label unrun checks as successful.

© sickn33, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts) in skills/lint-and-validate of sickn33/agentic-awesome-skills.

  • SKILL.md
  • scripts/lint_runner.py
  • scripts/type_coverage.py

Open the folder on GitHubat commit 680176d

Used in 1 other repository

We found 9 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Lint And Validate next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Lint And Validate compared with similar skills
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Lint And Validate this skillsickn33/agentic-awesome-skills47k1 repos~814Automated safety check: PassMIT
Plankton Code Qualityaffaan-m/ECC276k2 repos~1.3kAutomated safety check: PassMIT
Fix Security Issuehardisgroupcom/sfdx-hardis402—~1.3kAutomated safety check: NotesAGPL-3.0
Manor CI Triagemanor-os/manor-ai162—~533Automated safety check: PassCustom licence
Minimizing Ty Ecosystem Changesastral-sh/ruff50k—~4.6kAutomated safety check: PassMIT
Install Anti-Slop Oxlint Rulesdmmulroy/anti-slop5.3k—~2.2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Lint And Validate

What does Lint And Validate do?

Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results. Lint And Validate is an agent skill from sickn33/agentic-awesome-skills. Run configured lint and type checks, distinguish failures from checks that did not run, and report concrete validation results.

When should I use Lint And Validate?

Lint And Validate fits situations like: tasks that involve Linting and formatting.

How do I install Lint And Validate in Claude Code?

Run `npx skills add sickn33/agentic-awesome-skills --skill lint-and-validate -a claude-code`. Or copy the skill folder (skills/lint-and-validate in sickn33/agentic-awesome-skills) into .claude/skills/lint-and-validate in your project. Claude Code loads it when a task matches its description.

How do I install Lint And Validate in Codex?

Run `npx skills add sickn33/agentic-awesome-skills --skill lint-and-validate -a codex`. Or copy the skill folder (skills/lint-and-validate in sickn33/agentic-awesome-skills) into .agents/skills/lint-and-validate in your project. Codex loads it when a task matches its description.

Can I use Lint And Validate in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sickn33/agentic-awesome-skills --skill lint-and-validate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lint-and-validate, .gemini/skills/lint-and-validate, .github/skills/lint-and-validate and .opencode/skills/lint-and-validate in your project.

What does Lint And Validate need to run?

Going by SKILL.md and its folder, Lint And Validate needs Python for the scripts in its folder and the command-line tools its instructions call (npm, python, ruff and mypy). Our summary lists: Python 3.

Does Lint And Validate access the network?

SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Lint And Validate safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Lint And Validate use?

Lint And Validate is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Lint And Validate use?

About 814 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Lint And Validate?

Skills that share tags, products or a category with Lint And Validate: Plankton Code Quality (affaan-m/ECC, 276k stars), Fix Security Issue (hardisgroupcom/sfdx-hardis, 402 stars), Manor CI Triage (manor-os/manor-ai, 162 stars) and Minimizing Ty Ecosystem Changes (astral-sh/ruff, 50k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Lint And Validate?

sickn33 (a GitHub user) maintains it in sickn33/agentic-awesome-skills, which has 47,379 GitHub stars. The repository holds 1,493 skills in this directory. The repository was last updated on October 9, 2026.

Source: sickn33/agentic-awesome-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.