anthropic-validator

anthropic-validator is a skill for Claude Code from QBall-Inc/the-bulwark. It costs 40 tokens per session (4,555 once invoked), scanned A, original, MIT.

A checker for Claude Code add-ons such as skills, hooks, agents, commands, MCP servers, and plugins. It compares them with the latest official Anthropic rules.

In plain words
What is it for?
Use it to review Claude Code assets before sharing or deploying them. It produces a structured report of problems and suggested fixes.
Why use it?
Claude Code changes over time, so older checklists can miss new requirements. This finds rule violations and explains how to correct them.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions subagents; names the AskUserQuestion tool.

Part of the the-bulwark plugin — 30 skills, 17 agents, 6 hooks shipped together

Good fit Use it to review Claude Code assets before sharing or deploying them. It produces a structured report of problems and suggested fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/qball-inc/the-bulwark/anthropic-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 QBall-Inc/the-bulwark --skill anthropic-validator
Clone the repo
git clone --depth 1 https://github.com/QBall-Inc/the-bulwark

Made for: Claude Code.

Or install the-bulwark, the plugin that ships this one along with the rest of its 30 skills, 17 agents, 6 hooks.

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 anthropic-validator

README.md
[![agentmods](https://agentmods.dev/badge/skills/qball-inc/the-bulwark/anthropic-validator/github.svg)](https://agentmods.dev/skills/qball-inc/the-bulwark/anthropic-validator)
Your own site
<a href="https://agentmods.dev/skills/qball-inc/the-bulwark/anthropic-validator"><img src="https://agentmods.dev/badge/skills/qball-inc/the-bulwark/anthropic-validator/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 anthropic-validator

Your own site · 80×15
<a href="https://agentmods.dev/skills/qball-inc/the-bulwark/anthropic-validator"><img src="https://agentmods.dev/badge/skills/qball-inc/the-bulwark/anthropic-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,555 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Agent Snooping · line 59
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 397
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 331
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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 $0.00040 $0.04555
Opus 5 $0.00020 $0.02278
Sonnet 5 $0.00008 $0.00911
Haiku 4.5 $0.00004 $0.00456

Measured 10d ago against content hash 6df136fb37db, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

anthropic-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 10d 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.

skills/anthropic-validator/SKILL.md · 504 lines

How it starts

The opening of the file, as written. The whole thing — 504 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Anthropic Validator

Validates Claude Code assets against official Anthropic standards using dynamic documentation fetching and critical analysis.


Overview

The Problem

Claude Code evolves rapidly. Static checklists become outdated. Assets created months ago may violate current standards, and new features may not be reflected in embedded validation rules.

The Solution

This skill provides dynamic validation by:

  1. Fetching latest standards from official Claude Code documentation
  2. Critically analyzing assets against those standards
  3. Producing actionable reports with specific violations and remediation

Design Pattern: Main Context Orchestration

This skill uses Main Context Orchestration — you (Claude) follow the instructions below to orchestrate sub-agents sequentially. This is required because sub-agents cannot spawn other sub-agents.

┌─────────────────────────────────────────────────────────────┐
│                   MAIN CONTEXT (You)                         │
│                                                             │
│  1. Load this skill (anthropic-validator)                   │
│  2. Determine asset type → load matching references file    │
│  3. Spawn claude-code-guide → fetch latest standards        │
│  4. Read output (direct response)                           │
│  5. Spawn bulwark-standards-reviewer → analyze asset        │
│  6. Read validation report from logs/validations/           │
│  7. Present summary to user                                 │
│                                                             │
└─────────────────────────────────────────────────────────────┘

Invocation

# Single asset validation
/anthropic-validator skills/my-skill/SKILL.md

# Batch validation (directory)
/anthropic-validator skills/

# Context inference (validates current file in context)
/anthropic-validator

Validation Workflow

Step 0: Resolve Target Asset

IMPORTANT: When this skill is invoked, first resolve what to validate:

Read the full file on GitHub · 504 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. 10d ago First seen · 504 lines · 40 tokens per session scan A 6df136fb37db

Subscribe to this mod's changes

anthropic-validator is a skill published in the GitHub repository QBall-Inc/the-bulwark (8 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 4,555 once invoked, about $0.0002 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 2026-08-31.

Related

Other skills, from other repositories

github-pr-review

Handles PR review comments and feedback resolution. Use when user wants to resolve PR comments, handle review feedback, fix review comments, address PR review, check review status, respond to reviewer, verify PR readiness, review PR comments, analyze review feedback, evaluate PR comments, assess review suggestions, or…

fvadicamo/dev-agent-skills · 95 tokens

privacy-guard

Prevents private infrastructure details (node hostnames, internal project names, local usernames and personal emails, absolute home paths, private and VPN IP ranges) from leaking into public repositories through commits, PRs, docs or release artifacts. Use when working in a public or soon-to-be-public repo, before…

fvadicamo/dev-agent-skills · 128 tokens

github-pr-creation

Creates GitHub Pull Requests with automated validation and task tracking. Use when user wants to create PR, open pull request, submit for review, or check if ready for PR. Analyzes commits, validates task completion, generates Conventional Commits title and description, suggests labels. NOTE - for merging existing…

fvadicamo/dev-agent-skills · 75 tokens

github-pr-merge

Merges GitHub Pull Requests after validating pre-merge checklist. Use when user wants to merge PR, close PR, finalize PR, complete merge, approve and merge, or execute merge. Runs pre-merge validation (tests, lint, CI, comments), confirms with user, merges with proper format, handles post-merge cleanup.

fvadicamo/dev-agent-skills · 72 tokens

git-commit

Creates git commits following Conventional Commits format with type/scope/subject. Use when user wants to commit changes, create commit, save work, or stage and commit. Enforces project-specific conventions from CLAUDE.md.

fvadicamo/dev-agent-skills · 49 tokens

resolve-plugins

Curate Claude Code skill / MCP / hook picks against live upstream sources and pin them in .claude/settings.json. Adding a process harness (a paired skill set) is an ordinary pick this door handles. Reads stack from docs/techstack.md, workflow signal from docs/overview.md + existing pins, then live-queries six source…

RockyHong/super-bootstrap · 133 tokens