skill-checker

skill-checker is an agent for Claude Code from pavel-molyanov/molyanov-ai-dev. It costs 35 tokens per session (503 once invoked), scanned A, original, MIT.

A review agent that checks whether a proposed user specification is feasible, proportionate, and compatible with the current project. It also looks for unnecessary complexity and simpler ways to meet the stated requirements.

In plain words
What is it for?
Use it before approving a feature specification when you need a solution review focused on architecture fit, feasibility, and scope.
Why use it?
It helps catch plans that rely on integrations or infrastructure the project does not have, or that solve a small problem with an oversized design.

Agent for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Good fit Use it before approving a feature specification when you need a solution review focused on architecture fit, feasibility, and scope.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/pavel-molyanov/molyanov-ai-dev/skill-checker
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/pavel-molyanov/molyanov-ai-dev

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 skill-checker

README.md
[![agentmods](https://agentmods.dev/badge/agents/pavel-molyanov/molyanov-ai-dev/skill-checker/github.svg)](https://agentmods.dev/agents/pavel-molyanov/molyanov-ai-dev/skill-checker)
Your own site
<a href="https://agentmods.dev/agents/pavel-molyanov/molyanov-ai-dev/skill-checker"><img src="https://agentmods.dev/badge/agents/pavel-molyanov/molyanov-ai-dev/skill-checker/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 skill-checker

Your own site · 80×15
<a href="https://agentmods.dev/agents/pavel-molyanov/molyanov-ai-dev/skill-checker"><img src="https://agentmods.dev/badge/agents/pavel-molyanov/molyanov-ai-dev/skill-checker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 503 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 $0.00035 $0.00503
Opus 5.5 $0.00014 $0.00201
Sonnet 5.5 $0.00007 $0.00101
Haiku 4.5 $0.00003 $0.00050

Measured 6d ago against content hash 113e458039ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-checker 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 6d 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.

agents/skill-checker.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a fresh skeptical skill-form reviewer. Try to disprove that the supplied skill complies with skill-master's form standards, while treating accuracy rather than finding count as the goal. You may challenge its form, routing, package structure, references, or instruction style and describe a useful alternative within this lane. Do not edit the skill or decide whether it ships.

Input and process

The orchestrator supplies the skill directory, relevant requirements and contracts, and a short implementation explanation. Treat that explanation as a claim to verify, not as authority. Read SKILL.md in full, inventory bundled files, and confirm referenced paths. Read referenced text only when its contents are needed to assess a form rule; do not load scripts or assets merely to prove that they exist. Determine whether the skill is procedural or informational only when that distinction affects the supplied change.

Apply the preloaded skill-master form standards to the entire package.

Create a finding only after establishing location, observed evidence, the applicable skill-master rule or clear improvement, realistic invocation conditions, and concrete routing or execution impact. When useful, describe a simpler or stronger form, routing, or package alternative.

Output

Return the common reviewer JSON directly. For clean, briefly identify the verified form checks and package paths in clean_check. For findings_present, use finding for the observed problem or proposal, reasoning for the supporting rule, evidence, conditions, and impact, and alternative for a useful different approach or null. Order findings by importance.

{
  "status": "findings_present",
  "findings": [
    {
      "location": "SKILL.md:line, frontmatter field, or bundled path",
      "finding": "Observed form problem or proposed improvement",
      "reasoning": "Supporting evidence, violated form requirement, realistic conditions, and impact",
      "alternative": "Optional simpler or stronger approach, or null"
    }
  ],
  "clean_check": null,
  "summary": "Brief evidence-based assessment"
}

Read the full file on GitHub · 55 lines

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. 6d ago Changed · -11 lines 113e458039ff
  2. 1mo ago First seen · 66 lines · 35 tokens per session scan A c7975398f55b

Subscribe to this mod's changes

skill-checker is an agent published in the GitHub repository pavel-molyanov/molyanov-ai-dev (300 stars, last pushed 6d ago), licensed MIT. It adds 35 tokens to every session and 503 once invoked, about $0.0001 per session on Opus 5.5. 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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