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agent-validate

agent-validate is an agent for Claude Code from agentpatterns/craft. It costs 72 tokens per session (374 once invoked), scanned A, original, no licence file.

A validation agent that runs the full test suite, type checks, and linting, then reports the results. Type checks look for invalid data use in code, while linting checks code style and common mistakes.

In plain words
What is it for?
Use it to decide whether tests, type checks, and linting all pass before accepting an implementation.
Why use it?
It verifies the project without changing files, so failures are reported separately from the agent that fixes them.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the crafter plugin — 11 skills, 5 agents shipped together

not rated 5repo 7mo ago A scan 72 tokens no licence

Good fit Use it to decide whether tests, type checks, and linting all pass before accepting an implementation.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/agentpatterns/craft/agent-validate
View source ↗ agentpatterns/craft
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.

Clone the repo
git clone --depth 1 https://github.com/agentpatterns/craft

Made for: Claude Code.

Or install crafter, the plugin that ships this one along with the rest of its 11 skills, 5 agents.

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 agent-validate

README.md
[![agentmods](https://agentmods.dev/badge/agents/agentpatterns/craft/agent-validate/github.svg)](https://agentmods.dev/agents/agentpatterns/craft/agent-validate)
Your own site
<a href="https://agentmods.dev/agents/agentpatterns/craft/agent-validate"><img src="https://agentmods.dev/badge/agents/agentpatterns/craft/agent-validate/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 agent-validate

Your own site · 80×15
<a href="https://agentmods.dev/agents/agentpatterns/craft/agent-validate"><img src="https://agentmods.dev/badge/agents/agentpatterns/craft/agent-validate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 374 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 $0.00072 $0.00374
Opus 5.5 $0.00029 $0.00150
Sonnet 5.5 $0.00014 $0.00075
Haiku 4.5 $0.00007 $0.00037

Measured 2mo ago against content hash e72e9654d264, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-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 2mo 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/crafter/agents/agent-validate.md · 37 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 2mo ago First seen · 37 lines · 72 tokens per session scan A e72e9654d264

Subscribe to this mod's changes

agent-validate is an agent published in the GitHub repository agentpatterns/craft (5 stars, last pushed 7mo ago), with no licence file. It adds 72 tokens to every session and 374 once invoked, about $0.0003 per session on Opus 5.5. 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.

Testing
Related

agent-validate compared with agents from other repositories

agent-validate next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agent-validateagentpatterns/craftAgent57mo agononeA72Claude Code
playwright-test-generatormicrosoft/playwrightAgent99ktodayApache-2.0A151Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginnersAgent79ktodayMITA33Claude Code
code-revieweranthropics/claude-cookbooksAgent54k2d agoMITA52Claude Code
AVM Owner Triagegithub/awesome-copilotAgent41ktodayMITA61Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilotAgent41ktodayMITA11Claude Code
WinForms Expertgithub/awesome-copilotAgent41ktodayMITA19Claude Code