agentmods.dev

artifact-template-minimal-letterhead

artifact-template-minimal-letterhead is a skill for Claude Code, Codex from asgeirtj/system_prompts_leaks. It costs 54 tokens per session (278 once invoked), scanned A, original, CC0-1.0.

A document template for professional business letters with sender, recipient, message, and signature fields in a simple letterhead layout.

In plain words
What is it for?
Use it to prepare business letters such as notices, requests, introductions, or official responses.
Why use it?
It provides a ready-made structure for formal correspondence without requiring you to design the page yourself.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 71krepo +421 today A scan 54 tokens original CC0-1.0

Good fit Use it to prepare business letters such as notices, requests, introductions, or official responses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead
View source ↗ asgeirtj/system_prompts_leaks
About the project

System Prompts Leaks is a collection of captured system instructions used to guide AI chatbots and coding agents before they receive user messages. It serves researchers and developers studying how different AI assistants are directed.

asgeirtj/system_prompts_leaks · 70,966 stars · on GitHub

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 asgeirtj/system_prompts_leaks --skill artifact-template-minimal-letterhead
Clone the repo
git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks

Made for: Claude Code, Codex.

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 artifact-template-minimal-letterhead

README.md
[![agentmods](https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead/github.svg)](https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead)
Your own site
<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead/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 artifact-template-minimal-letterhead

Your own site · 80×15
<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/artifact-template-minimal-letterhead.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 278 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 original 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 $0.00054 $0.00278
Opus 5.5 $0.00022 $0.00111
Sonnet 5.5 $0.00011 $0.00056
Haiku 4.5 $0.00005 $0.00028

Measured today against content hash 880ef094d4d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

artifact-template-minimal-letterhead 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 today.

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.

OpenAI/Codex/plugins/openai-templates/skills/artifact-template-minimal-letterhead/SKILL.md · 23 lines

What it actually says

Minimal Letterhead

Create a new document from this template. Keep the reference file unchanged.

Workflow

  1. Read artifact-template.json and resolve its paths relative to this skill directory.
  2. Identify the prompt-advertised preinstalled document capability. Use the available resource or filesystem tool to open its advertised resource, plugin, skill, or file target, then follow its reference/template workflow with the retained file. If no such capability can be identified and read, say it is unavailable and stop; do not recreate or install it.
  3. Treat the user's prompt and available sources as the content input. Do not invent facts merely to fill a template slot.
  4. Clone or import the reference instead of replacing its visual system with generic defaults.
  5. Render and verify the finished document, then return the final artifact.

Fidelity

Preserve page setup, sections, styles, lists, tables, headers, footers, and recurring page elements.

User instructions control requested content and explicit deviations. The retained reference controls layout and formatting where the user has not requested a change.

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. today First seen · 23 lines · 54 tokens per session scan A 880ef094d4d0

Subscribe to this mod's changes

artifact-template-minimal-letterhead is a skill published in the GitHub repository asgeirtj/system_prompts_leaks (70,966 stars, last pushed today), licensed CC0-1.0. It adds 54 tokens to every session and 278 once invoked, about $0.0002 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 2026-11-07.

DocumentsWriting and docsaianthropicchatbotchatgptclaude
Related

artifact-template-minimal-letterhead compared with skills from other repositories

artifact-template-minimal-letterhead next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
artifact-template-minimal-letterheadasgeirtj/system_prompts_leaksSkill71ktodayCC0-1.0A54Claude Code, Codex
dcf-modelNousResearch/hermes-agentSkill261ktodayMITA14Claude Code, Codex
comps-analysisNousResearch/hermes-agentSkill261ktodayMITA13Claude Code, Codex
lbo-modelNousResearch/hermes-agentSkill261ktodayMITA19Claude Code, Codex
siyuanNousResearch/hermes-agentSkill261ktodayMITA17Claude Code, Codex
3-statement-modelNousResearch/hermes-agentSkill261ktodayMITA18Claude Code, Codex
boxNousResearch/hermes-agentSkill261ktodayMITA14Claude Code, Codex