package-json-validator

package-json-validator is a skill for Claude Code, Codex from MohibShaikh/clawvet. It costs 12 tokens per session (68 once invoked), scanned A, original, MIT.

A check for a package.json file, which is the configuration file used by many JavaScript and Node.js projects. It verifies that the file contains a name, version, and license.

In plain words
What is it for?
Use it to validate package metadata during project checks or before releasing a JavaScript package.
Why use it?
It catches missing basic package information before the project is published, shared, or processed by other tools.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to validate package metadata during project checks or before releasing…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mohibshaikh/clawvet/package-json-validator
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.

Any agent
npx skills add MohibShaikh/clawvet --skill package-json-validator
Clone the repo
git clone --depth 1 https://github.com/MohibShaikh/clawvet

Made for: Claude Code, Codex.

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 package-json-validator

README.md
[![agentmods](https://agentmods.dev/badge/skills/mohibshaikh/clawvet/package-json-validator.svg)](https://agentmods.dev/skills/mohibshaikh/clawvet/package-json-validator)
Your own site
<a href="https://agentmods.dev/skills/mohibshaikh/clawvet/package-json-validator"><img src="https://agentmods.dev/badge/skills/mohibshaikh/clawvet/package-json-validator.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 68 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 $0.00012 $0.00068
Opus 5 $0.00006 $0.00034
Sonnet 5 $0.00002 $0.00014
Haiku 4.5 $0.00001 $0.00007

Measured 7d ago against content hash 59def14536e2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

package-json-validator 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.

benchmarks/benign/package-json-validator/SKILL.md · 15 lines

What it actually says

Usage

Verifies name, version and license are present.

const pkg = JSON.parse(input);
console.log(pkg.name && pkg.version ? 'ok' : 'missing fields');
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 · 15 lines · 12 tokens per session scan A 59def14536e2

Subscribe to this mod's changes

package-json-validator is a skill published in the GitHub repository MohibShaikh/clawvet (11 stars, last pushed 4d ago), licensed MIT. It adds 12 tokens to every session and 68 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-30.

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