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agent-system: Agent for Claude Code

.claude/agents/validator.md

validator is an agent for Claude Code from robomoto/agent-system. It costs 33 tokens per session (610 once invoked), scanned A, original, no licence file.

An independent checker that verifies assertions, implementations, tests, and outputs against a specification. It does not rely on an agent’s claim that the work is finished.

In plain words
What is it for?
Use it to confirm that code works, tests pass, and the delivered output conforms to the stated specification.
Why use it?
It provides a separate review step for catching incorrect results or missing requirements.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is robomoto/agent-system's own configuration. It tells Claude Code how to work on agent-system itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agent-system configures →

not rated 7repo 6mo ago A scan 33 tokens no licence
View source ↗ robomoto/agent-system
Reuse

Borrowing it

Nothing to install: this file belongs to robomoto/agent-system. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/robomoto/agent-system/main/.claude/agents/validator.md
Clone the repo
git clone --depth 1 https://github.com/robomoto/agent-system

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 validator

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/robomoto/agent-system/validator"><img src="https://agentmods.dev/badge/agents/robomoto/agent-system/validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00610
Opus 5.5 $0.00013 $0.00244
Sonnet 5.5 $0.00007 $0.00122
Haiku 4.5 $0.00003 $0.00061

Measured 2mo ago against content hash 19b777b1165b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

validator scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- test_method: "Ran `curl -H 'Authorization: Bearer <expired-token>' localhost:3000/api/protected` and checked response"
.claude/agents/validator.md · 79 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 · 79 lines · 33 tokens per session scan A 19b777b1165b

Subscribe to this mod's changes

validator is an agent published in the GitHub repository robomoto/agent-system (7 stars, last pushed 6mo ago), with no licence file. It adds 33 tokens to every session and 610 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Testing
Related

validator compared with agents from other repositories

validator next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
validatorrobomoto/agent-systemAgent76mo agononeA33Claude Code
playwright-test-generatormicrosoft/playwrightAgent99kyesterdayApache-2.0A151Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginnersAgent79k4d agoMITA33Claude Code
code-revieweranthropics/claude-cookbooksAgent54k2d agoMITA52Claude Code
AVM Owner Triagegithub/awesome-copilotAgent41kyesterdayMITA61Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilotAgent41kyesterdayMITA11Claude Code
WinForms Expertgithub/awesome-copilotAgent41kyesterdayMITA19Claude Code