validator_functional

validator_functional is a cursor rule for Cursor from Atabold/AI-Agent-System. It costs 14 tokens per session (45 once invoked), scanned A, original, no licence file.

Rules for checking whether a feature fits the project context and passes the listed tests.

In plain words
What is it for?
Use it to validate completed or planned features against project notes and tests.
Why use it?
It helps catch features that do not match the project requirements or fail the test checklist.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it to validate completed or planned features against project notes and tests.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/atabold/ai-agent-system/validator_functional
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/Atabold/AI-Agent-System

Made for: Cursor.

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_functional

README.md
[![agentmods](https://agentmods.dev/badge/rules/atabold/ai-agent-system/validator_functional/github.svg)](https://agentmods.dev/rules/atabold/ai-agent-system/validator_functional)
Your own site
<a href="https://agentmods.dev/rules/atabold/ai-agent-system/validator_functional"><img src="https://agentmods.dev/badge/rules/atabold/ai-agent-system/validator_functional/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_functional

Your own site · 80×15
<a href="https://agentmods.dev/rules/atabold/ai-agent-system/validator_functional"><img src="https://agentmods.dev/badge/rules/atabold/ai-agent-system/validator_functional.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 45 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 $0.00014 $0.00045
Opus 5.5 $0.00006 $0.00018
Sonnet 5.5 $0.00003 $0.00009
Haiku 4.5 $0.00001 $0.00005

Measured 1mo ago against content hash 4369da79f515, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

validator_functional 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 1mo 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.

.cursor/rules/validator_functional.mdc · 9 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. 1mo ago First seen · 9 lines · 14 tokens per session scan A 4369da79f515

Subscribe to this mod's changes

validator_functional is a cursor rule published in the GitHub repository Atabold/AI-Agent-System (2 stars, last pushed 4mo ago), with no licence file. It adds 14 tokens to every session and 45 once invoked, about $0.0001 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.