arckit.data-model

arckit.data-model is a command for Claude Code from tractorjuice/arckit-codex. It costs 14 tokens per session (4,976 once invoked), scanned B, original, no licence file.

A data modelling tool for describing entities, their relationships, and rules for managing personal data under GDPR, the European privacy law.

In plain words
What is it for?
Use it to design entity-relationship models, document data ownership and governance, and account for GDPR requirements.
Why use it?
It helps clarify how data is structured and how it should be governed and protected.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md).

Good fit Use it to design entity-relationship models, document data ownership and governance, and account for GDPR requirements.

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Install with agentmods
npx agentmods add commands/tractorjuice/arckit-codex/arckit.data-model
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/tractorjuice/arckit-codex

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 arckit.data-model

README.md
[![agentmods](https://agentmods.dev/badge/commands/tractorjuice/arckit-codex/arckit.data-model.svg)](https://agentmods.dev/commands/tractorjuice/arckit-codex/arckit.data-model)
Your own site
<a href="https://agentmods.dev/commands/tractorjuice/arckit-codex/arckit.data-model"><img src="https://agentmods.dev/badge/commands/tractorjuice/arckit-codex/arckit.data-model.svg" alt="Measured on agentmods" 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 4,976 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 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 $0.00014 $0.04976
Opus 5 $0.00007 $0.02488
Sonnet 5 $0.00003 $0.00995
Haiku 4.5 $0.00001 $0.00498

Measured 4d ago against content hash 28b8c280afa8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

arckit.data-model scanned grade B 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 4d 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.

Asks the agent to reveal its instructionsmediumSystem prompt leakage

Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.

- Show summary only (see Output Instructions below)
commands/arckit.data-model.md · 410 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. 4d ago First seen · 410 lines · 14 tokens per session scan B 28b8c280afa8

Subscribe to this mod's changes

arckit.data-model is a command published in the GitHub repository tractorjuice/arckit-codex (16 stars, last pushed 4d ago), with no licence file. It adds 14 tokens to every session and 4,976 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

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