validate-skill

validate-skill is a command for Claude Code from ncssm-robotics/ftc-claude. It costs 8 tokens per session (855 once invoked), scanned A, original, MIT.

A command that checks whether an FTC skill plugin has the required files, settings, documentation, and marketplace metadata.

In plain words
What is it for?
Run it with a skill name, such as /validate-skill pedro-pathing, to validate that skill’s plugin directory and SKILL.md file.
Why use it?
It finds structural and content problems before a skill is submitted or reviewed.

Command for Claude Code

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/ncssm-robotics/ftc-claude/validate-skill
Clone the repo
git clone --depth 1 https://github.com/ncssm-robotics/ftc-claude

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 validate-skill

README.md
[![agentmods](https://agentmods.dev/badge/commands/ncssm-robotics/ftc-claude/validate-skill.svg)](https://agentmods.dev/commands/ncssm-robotics/ftc-claude/validate-skill)
Your own site
<a href="https://agentmods.dev/commands/ncssm-robotics/ftc-claude/validate-skill"><img src="https://agentmods.dev/badge/commands/ncssm-robotics/ftc-claude/validate-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 855 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 $0.00008 $0.00855
Opus 5 $0.00004 $0.00428
Sonnet 5 $0.00002 $0.00171
Haiku 4.5 $0.00001 $0.00085

Measured 5d ago against content hash a22b770b7a7c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-skill 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 5d 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/commands/validate-skill.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Validate Skill Command

Validates that an FTC skill plugin follows marketplace requirements and best practices.

Usage

/validate-skill <skill-name>

Arguments:

  • skill-name: Name of the skill to validate (must exist in plugins/)

Examples

/validate-skill pedro-pathing
/validate-skill rev-hub

Validation Checks

Structure Checks

  • plugins/<skill-name>/ directory exists
  • plugins/<skill-name>/plugin.json exists and is valid JSON
  • plugins/<skill-name>/skills/<skill-name>/ directory exists
  • plugins/<skill-name>/skills/<skill-name>/SKILL.md exists

plugin.json Checks

  • Has name field matching directory name
  • Has description field (non-empty)
  • Has version field (semver format)
  • Has license field
  • Has tags array with "ftc"
  • Has compatibility.agents array

SKILL.md Frontmatter Checks

  • Has YAML frontmatter (starts with ---)
  • Has name field matching directory name
  • Has description field (non-empty, < 1024 chars)
  • description includes WHAT the skill does
  • description includes WHEN to use it (trigger words)
  • Has license field
  • Has metadata.category field
  • Has metadata.version field

Content Quality Checks

  • SKILL.md is under 500 lines
  • Has "Quick Start" or "## Quick" section
  • Has code examples (java or kotlin blocks)
  • Has "Anti-Pattern" or "Don't" section
  • No [TODO: ...] placeholders remaining
  • No hardcoded file paths from template

marketplace.json Check

  • Skill is listed in .claude-plugin/marketplace.json
  • Entry has correct path field

Script Checks (if scripts/ exists)

  • All .sh files are executable
  • All .py files are executable
  • Scripts have shebang line

Output Format

Report results as:

Validating skill: <skill-name>

Structure:
  ✓ plugin.json exists
  ✓ SKILL.md exists
  ✗ Missing scripts/ directory (optional)

plugin.json:
  ✓ Valid JSON
  ✓ Name matches directory
  ✗ Missing 'ftc' in tags

SKILL.md:
  ✓ Valid frontmatter
  ✓ Description includes WHAT
  ✗ Description missing WHEN triggers
  ✓ Under 500 lines (127 lines)

Content:
  ✓ Has Quick Start section
  ✓ Has code examples
  ✗ Missing Anti-Patterns section
  ✗ Contains [TODO: ...] placeholders

marketplace.json:
  ✓ Skill is registered

Summary: 8/12 checks passed

Read the full file on GitHub · 138 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. 5d ago First seen · 138 lines · 8 tokens per session scan A a22b770b7a7c

Subscribe to this mod's changes

validate-skill is a command published in the GitHub repository ncssm-robotics/ftc-claude (4 stars, last pushed 7mo ago), licensed MIT. It adds 8 tokens to every session and 855 once invoked, about $0.0000 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.