validation-agent

validation-agent is a skill for Claude Code from Agile-V/agile_v_skills. It costs 33 tokens per session (1,186 once invoked), scanned A, original, CC-BY-SA-4.0.

A planning and review aid for checking whether a system works for its intended users and real-world operating conditions.

In plain words
What is it for?
Use it after technical verification to plan and assess checks with representative users and in the environments where the system will be used.
Why use it?
It helps find out whether the right system was built for its stated purpose, beyond confirming that the software functions as designed.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agile-v-skills plugin — 49 skills shipped together

Good fit Use it after technical verification to plan and assess checks with representative users and in the environments where the system will be used.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/agile-v/agile_v_skills/validation-agent
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 Agile-V/agile_v_skills --skill validation-agent
Clone the repo
git clone --depth 1 https://github.com/Agile-V/agile_v_skills

Made for: Claude Code.

Or install agile-v-skills, the plugin that ships this one along with the rest of its 49 skills.

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 validation-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/agile-v/agile_v_skills/validation-agent/github.svg)](https://agentmods.dev/skills/agile-v/agile_v_skills/validation-agent)
Your own site
<a href="https://agentmods.dev/skills/agile-v/agile_v_skills/validation-agent"><img src="https://agentmods.dev/badge/skills/agile-v/agile_v_skills/validation-agent/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 validation-agent

Your own site · 80×15
<a href="https://agentmods.dev/skills/agile-v/agile_v_skills/validation-agent"><img src="https://agentmods.dev/badge/skills/agile-v/agile_v_skills/validation-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,186 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 unknown 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 $0.00033 $0.01186
Opus 5 $0.00016 $0.00593
Sonnet 5 $0.00007 $0.00237
Haiku 4.5 $0.00003 $0.00119

Measured 10d ago against content hash bdfdc0e190b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

validation-agent 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.

validation-agent/SKILL.md · 76 lines

The source is not reproduced here

Licensed CC-BY-SA-4.0

The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 76 lines · 33 tokens per session scan A bdfdc0e190b4

Subscribe to this mod's changes

validation-agent is a skill published in the GitHub repository Agile-V/agile_v_skills (53 stars, last pushed 15d ago), licensed CC-BY-SA-4.0. It adds 33 tokens to every session and 1,186 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 2026-08-30.

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