validate

validate is a command for Claude Code from ngocsangyem/MeowKit. It costs 0 tokens per session (312 once invoked), scanned A, original, MIT.

A command that runs fixed validation scripts to check a project for known structural, naming, security, and configuration issues. It reports machine-readable findings without using an AI model.

In plain words
What is it for?
Use it to inspect project structure, required files, naming conventions, configuration, and security patterns.
Why use it?
It gives reproducible checks that are local, fast, and auditable. Developers can rerun them after changes and compare the results reliably.

Command for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to inspect project structure, required files, naming conventions, configuration, and security patterns.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/ngocsangyem/meowkit/validate
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/ngocsangyem/MeowKit

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for validate

README.md
[![agentmods](https://agentmods.dev/badge/commands/ngocsangyem/meowkit/validate/github.svg)](https://agentmods.dev/commands/ngocsangyem/meowkit/validate)
Your own site
<a href="https://agentmods.dev/commands/ngocsangyem/meowkit/validate"><img src="https://agentmods.dev/badge/commands/ngocsangyem/meowkit/validate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for validate

Your own site · 80×15
<a href="https://agentmods.dev/commands/ngocsangyem/meowkit/validate"><img src="https://agentmods.dev/badge/commands/ngocsangyem/meowkit/validate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 312 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00312
Opus 5 $0.00000 $0.00156
Sonnet 5 $0.00000 $0.00062
Haiku 4.5 $0.00000 $0.00031

Measured 7d ago against content hash 4618f4f568dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

validate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/mk/validate.md · 33 lines

What it actually says

/validate — Deterministic Validation (Non-LLM)

Usage

/validate

Behavior

Runs deterministic validation scripts that check for anti-patterns WITHOUT using the LLM. Use this when you want certainty, not AI judgment.

Execution Steps

  1. Run validation scripts. Execute the following Python scripts:

    • .claude/scripts/validate.py — checks for structural anti-patterns, naming convention violations, missing required files, and configuration issues.
    • .claude/scripts/security-scan.py — checks for security anti-patterns using pattern matching (regex-based, not LLM-based).
  2. Collect results. Each script outputs machine-verifiable results in a structured format: file path, line number, rule violated, severity.

  3. Print results. Display all findings. These are deterministic — running the same scripts on the same code will always produce the same output.

Why This Exists

LLM-based review (/mk:review, /mk:audit) is powerful but non-deterministic. /mk:validate provides a complementary layer of checks that are:

  • Reproducible: same input always produces same output.
  • Fast: no API calls, runs locally.
  • Auditable: the rules are visible in the script source code.

Output

Machine-verifiable results from validate.py and security-scan.py. Each finding includes: file path, line number, rule violated, and severity.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 33 lines · 0 tokens per session scan A 4618f4f568dc

Subscribe to this mod's changes

validate is a command published in the GitHub repository ngocsangyem/MeowKit (14 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 312 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.