validate

A validation check for all plugins in a marketplace, including their folders, configuration files, links between files, shell scripts, and Markdown conventions.

In plain words
What is it for?
Use it to check whether every registered plugin has the expected structure and valid metadata.
Why use it?
It finds missing files, invalid configuration, version mismatches, broken references, and other repository problems before they cause failures.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/apurvbazari/claude-plugins/validate
Any agent
npx skills add ApurvBazari/claude-plugins --skill validate
Clone the repo
git clone --depth 1 https://github.com/ApurvBazari/claude-plugins

Made for: Claude Code, Codex.

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 811 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00016 $0.00811
Opus 5 $0.00008 $0.00405
Sonnet 5 $0.00003 $0.00162
Haiku 4.5 $0.00002 $0.00081

Measured 2d ago against content hash bf706b8448b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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/skills/validate/SKILL.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/validate — Plugin Validation

Run all quality checks across every plugin in the marketplace. Reports PASS/WARN/FAIL per category.

Step 1: Identify Plugins

Read .claude-plugin/marketplace.json to get the list of registered plugins. For each plugin, extract the source path.

Step 2: Structure Check

For each plugin directory, verify:

  • .claude-plugin/plugin.json exists
  • README.md exists
  • At least one of skills/, commands/, agents/ exists

Report missing items as FAIL.

Step 3: Manifest Validation

For each plugin.json, verify:

  • Valid JSON syntax
  • Required fields present: name, version, description, author, license, keywords
  • name matches the plugin directory name

Report missing/invalid fields as FAIL.

Step 4: Version Sync

Compare each plugin's plugin.json version with its marketplace.json entry:

  • Versions must match exactly
  • Both must be valid semver

Report mismatches as FAIL.

Step 5: Reference Integrity

For each skills/*/SKILL.md, check if the skill directory has a references/ subdirectory. If it does, verify every .md file in it exists and is non-empty.

For each agents/*.md, check for any script references (paths to .sh files). Verify those scripts exist.

Report broken references as FAIL.

Step 6: ShellCheck

Run shellcheck on all .sh files across all plugins and .claude/hooks/.

If shellcheck is not installed:

  • Report as WARN: "ShellCheck not installed — skipping script validation. Install with: brew install shellcheck"
  • Do NOT report as FAIL

If installed, report any ShellCheck errors as WARN (not FAIL — scripts may have intentional suppressions).

Step 7: SKILL.md Section Check

For each SKILL.md, verify:

  • H1 title exists (line begins with # followed by descriptive text)
  • H1 does NOT use the /<plugin>:<skill> slash form — per .claude/rules/skills-authoring.md, the slash is derived from frontmatter name, not the H1
  • Has a ## Key Rules section (or similar closing constraints section)

Read the full file on GitHub · 102 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 102 lines · 16 tokens per session scan A bf706b8448b1

Subscribe to this mod's changes

validate is a skill published in the GitHub repository ApurvBazari/claude-plugins (0 stars, last pushed 26d ago), licensed MIT. It adds 16 tokens to every session and 811 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 2026-08-31.