generative-media-skills: Instructions file for Codex

AGENTS.md

generative-media-skills AGENTS.md is an instructions file for Codex, OpenCode from calesthio/generative-media-skills. It costs 619 tokens per session, scanned A, original, MIT.

Repository instructions for a collection of generative-media skills. They define required files, allowed folders, publication rules, and other constraints for authoring or reviewing skills.

In plain words
What is it for?
They guide the creation, editing, review, packaging, and publication of skills in the repository.
Why use it?
They provide consistency and prevent skill packages from containing unsupported files or breaking repository rules. They also require certain methodology and instruction files to be read before skill work begins.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is calesthio/generative-media-skills's own configuration. It tells Codex and OpenCode how to work on generative-media-skills 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 generative-media-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to calesthio/generative-media-skills. 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/calesthio/generative-media-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/calesthio/generative-media-skills

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 generative-media-skills AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/calesthio/generative-media-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/calesthio/generative-media-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 619 This file is loaded in full into every session.
When invoked 619 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 $0.00619 $0.00619
Opus 5.5 $0.00248 $0.00248
Sonnet 5.5 $0.00124 $0.00124
Haiku 4.5 $0.00062 $0.00062

Measured 1mo ago against content hash 8ff5d17b6e08, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

generative-media-skills 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 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.

AGENTS.md · 45 lines

How it starts

The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent instructions

Read METHODOLOGY.md completely before creating, editing, or reviewing a skill.

Non-negotiable rules

  1. A leaf skill directory at skills/<family>/<category>/<skill-name>/ must contain SKILL.md and hidden EVAL.md. It may also contain only these optional top-level directories: scripts/, references/, assets/, and tests/.
  2. Category directories contain only subdirectories. Do not add arbitrary leaf-level files, templates, notes, manifests, or top-level directories beyond the allowed package contract.
  3. Publication includes only SKILL.md plus scripts/, references/, and assets/ when present. EVAL.md and tests/ are repository-only and must be excluded from bundled skill packages by default.
  4. Root tools/ may contain repository maintenance tooling such as package export; copied skills must not silently depend on root tooling at runtime.
  5. Do not read or imitate sibling skills while authoring a new skill unless the task is explicitly an audit or comparison.
  6. Do not use another completed skill as a structural, stylistic, or conceptual template.
  7. Research the assigned provider, model, craft, or production category independently.
  8. Prefer official documentation, model cards, technical reports, standards, peer-reviewed research, and reproducible tests.
  9. Label documented facts, empirical observations, and production heuristics distinctly.
  10. Cite consequential factual claims and record when volatile facts were verified.
  11. Include complete examples when examples materially improve an agent's ability to produce content. Label every example as an example, not a mandatory formula.
  12. Use supporting resources for progressive disclosure: keep SKILL.md as the navigable entrypoint, reference bundled files with relative paths, and state when an agent should load or run them.
  13. Add scripts only when executable code is materially better than prose. Scripts must be portable, dependency-explicit, safe by default, dry-run capable for side effects, and covered by repository tests.
  14. Do not impose an arbitrary length limit. Include the depth required by the subject and exclude unrelated material.
  15. Write for an AI agent performing real content production, not for a human browsing a list of prompt tips.
  16. Never expose EVAL.md to the agent being evaluated. Evaluate with the published package only, then score with EVAL.md.

Read the full file on GitHub · 45 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. 1mo ago First seen · 45 lines · 619 tokens per session scan A 8ff5d17b6e08

Subscribe to this mod's changes

generative-media-skills AGENTS.md is an instructions file published in the GitHub repository calesthio/generative-media-skills (216 stars, last pushed 3mo ago), licensed MIT. It adds 619 tokens to every session, about $0.0025 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 2026-08-30.

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