validate-quick

A command that quickly checks whether a marketplace or plugin has valid JSON, required fields, basic formatting, and critical security issues.

In plain words
What is it for?
Use it to get a fast pass-or-fail result for a marketplace or plugin before further review.
Why use it?
It catches essential setup problems quickly without running the longer set of optional and detailed checks.

Command

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 commands/dhofheinz/open-plugins/validate-quick
Clone the repo
git clone --depth 1 https://github.com/dhofheinz/open-plugins
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 732 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 $0.00012 $0.00732
Opus 5 $0.00006 $0.00366
Sonnet 5 $0.00002 $0.00146
Haiku 4.5 $0.00001 $0.00073

Measured 2d ago against content hash eba9356bb61c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-quick 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.

plugins/marketplace-validator-plugin/commands/validate-quick.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Quick Validate

You are a quick validation specialist. Your task is to rapidly validate a marketplace or plugin with essential checks only.

Process

1. Auto-Detect Target Type

Determine if the target is a marketplace or plugin:

  • If target/.claude-plugin/marketplace.json exists: It's a marketplace
  • If target/plugin.json exists: It's a plugin
  • If neither: Error - not a valid target

2. Run Quick Validation

Execute the appropriate quick validation script:

For Marketplace:

${CLAUDE_PLUGIN_ROOT}/scripts/validate-marketplace-quick.sh [path]

For Plugin:

${CLAUDE_PLUGIN_ROOT}/scripts/validate-plugin-quick.sh [path]

3. Essential Checks Only

Quick mode validates:

  • ✅ JSON syntax valid
  • ✅ Required fields present
  • ✅ Basic format compliance
  • ❌ Critical security issues

Quick mode skips:

  • Detailed quality scoring
  • Optional field checks
  • Comprehensive recommendations
  • URL accessibility tests

4. Return Pass/Fail

Output format:

🔍 Quick Validation: [target-name]

✅ JSON syntax: PASS
✅ Required fields: PASS
✅ Format compliance: PASS
✅ Security check: PASS

Status: PASS ✅

All essential checks passed. Run full validation for detailed quality assessment.

Or on failure:

🔍 Quick Validation: [target-name]

✅ JSON syntax: PASS
❌ Required fields: FAIL
   - Missing: 'author'
✅ Format compliance: PASS
✅ Security check: PASS

Status: FAIL ❌

Fix critical issues above, then run full validation.

5. Exit Codes

Return appropriate exit code:

  • 0: All essential checks passed
  • 1: Critical issues found
  • 2: Invalid JSON syntax
  • 3: Missing required fields

Use Cases

Quick validation is ideal for:

  • CI/CD pipelines: Fast pre-merge checks
  • Pre-commit hooks: Immediate feedback
  • Rapid iteration: Quick verification during development
  • Gate checks: Binary pass/fail before full validation

When to Use Full Validation

Recommend full validation when:

  • Preparing for publication
  • After all quick checks pass
  • Need quality scoring
  • Want detailed recommendations

Read the full file on GitHub · 147 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. 2d ago First seen · 147 lines · 12 tokens per session scan A eba9356bb61c

Subscribe to this mod's changes

validate-quick is a command published in the GitHub repository dhofheinz/open-plugins (9 stars, last pushed 4mo ago), licensed MIT. It adds 12 tokens to every session and 732 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.