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card-skill: Instructions file for Codex

AGENTS.md

card-skill AGENTS.md is an instructions file for Codex, OpenCode from KKenny0/card-skill. It costs 757 tokens per session, scanned A, original, MIT.

A repository instruction file for the card-skill project. It defines the project’s source files, packaged copy, working rules, and important boundaries.

In plain words
What is it for?
It guides repository changes, packaging, version updates, documentation alignment, and decisions about how the card-skill preview and renderer should behave.
Why use it?
It helps the coding agent change the correct files, preserve user work, and keep the source project synchronized with its installable package.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions Codex.

This is KKenny0/card-skill's own configuration. It tells Codex and OpenCode how to work on card-skill 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 card-skill configures →

not rated 5repo changed 18d ago A scan 757 tokens original MIT
View source ↗ KKenny0/card-skill
Reuse

Borrowing it

Nothing to install: this file belongs to KKenny0/card-skill. 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/KKenny0/card-skill/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/KKenny0/card-skill

Made for: Codex, OpenCode.

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 card-skill AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kkenny0/card-skill/agents-md/github.svg)](https://agentmods.dev/instructions/kkenny0/card-skill/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/kkenny0/card-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/kkenny0/card-skill/agents-md/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 card-skill AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kkenny0/card-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/kkenny0/card-skill/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 757 This file is loaded in full into every session.
When invoked 757 The same file — it is already loaded in full.
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 $0.00757 $0.00757
Opus 5.5 $0.00303 $0.00303
Sonnet 5.5 $0.00151 $0.00151
Haiku 4.5 $0.00076 $0.00076

Measured 18d ago against content hash 2d71107f3fc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

card-skill AGENTS.md 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 18d 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.

AGENTS.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository instructions

Working principles

  • Use PowerShell 7 (pwsh) for PowerShell commands.
  • Start from the actual input, contract, renderer, and output artifact before changing behavior.
  • Preserve user-owned untracked work. Do not stage, rewrite, or delete HANDOFF.md or prototypes/ unless the user explicitly asks.

Source of truth and packaged mirror

  • The repository root is the source of truth for SKILL.md, README.md, README.zh-CN.md, VERSION, package.json, assets/, evals/, references/, schemas/, and scripts/.
  • README.md is the primary English product README. Keep README.zh-CN.md aligned when product docs change.
  • plugins/card-skill/skills/card-skill/ is a generated installable mirror. Do not edit it independently.
  • After changing any packaged source, run npm run package-skill, then inspect the resulting mirror diff.
  • Keep VERSION, the root and packaged package.json, the root and packaged SKILL.md frontmatter, plugins/card-skill/.codex-plugin/plugin.json, and the version in .claude-plugin/marketplace.json synchronized.

Contract boundaries

  • Codex inline preview is a decision surface. It may select a render contract, but it must not bypass the normal schema, renderer, screenshot, check-output, and PNG inspection chain.
  • editorial-image.composition_required: true means the selected direction cannot be delivered by the default scaffold. Before rendering, provide both content_html and custom_css; validation and the renderer must reject an incomplete contract.
  • scripts/lib/schema.js owns runtime input validation. Files in schemas/ document the public structured contract and must stay aligned with runtime validation.
  • Renderers own deterministic HTML generation. Renderer orchestration stays behind the renderer interface: scripts/card.js calls render(input, htmlPath, ctx) with an injected ctx.measure browser adapter and, when a renderer provides them, iterates renderAttempts(input) and consults isSalvageableError(error). Family dispatch, salvage ladders, and measure-to-layout choreography live inside the renderer; error-message matching across the renderer seam is a regression. scripts/check-output.mjs owns machine-checkable output defects; subjective composition quality remains a visual inspection responsibility.
  • Keep provider authentication and upstream semantics out of card renderers. Source adapters normalize external content before it reaches a render contract.
  • Editorial cover_art is conceptual artwork, not source evidence. Keep its receipt snapshot separate from poster media_snapshots; CLI, candidate rendering, and reviewed publication must preserve the same bounded embedded-resource identity. Generation capability selection belongs to the calling Agent, never the renderer.

Read the full file on GitHub · 44 lines

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. 18d ago Changed · +1 lines · +56 tokens per session 2d71107f3fc6
  2. 1mo ago Changed · +116 tokens per session 70178a6ca672
  3. 1mo ago First seen · 43 lines · 585 tokens per session scan A 3ada1dc55288

Subscribe to this mod's changes

card-skill AGENTS.md is an instructions file published in the GitHub repository KKenny0/card-skill (5 stars, last pushed yesterday), licensed MIT. It adds 757 tokens to every session, about $0.0030 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.

Claude Codedesign-systeminfographicpostertext-to-imagetypography
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