plg-skills: Instructions file for Codex

AGENTS.md

plg-skills AGENTS.md is an instructions file for Codex, OpenCode from SkeneTechnologies/plg-skills. It costs 353 tokens per session, scanned A, original, MIT.

A contributor guide for a Markdown library of Product-Led Growth, or PLG, skills. PLG is a way of growing software by helping users start and expand their use of a product, and the guide explains how these instruction files are organized and written.

In plain words
What is it for?
Use it when adding or editing skills, checking their required metadata, keeping guidance tailored to different products and audiences, and updating the library index.
Why use it?
It helps contributors preserve the library's structure and produce specific, reusable guidance instead of vague advice or broken skill files.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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README.md
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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.

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Per session 353 This file is loaded in full into every session.
When invoked 353 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 $0.00353 $0.00353
Opus 5 $0.00177 $0.00177
Sonnet 5 $0.00071 $0.00071
Haiku 4.5 $0.00035 $0.00035

Measured 10d ago against content hash 1b5c6664edd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

plg-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 10d 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 · 33 lines

What it actually says

AI / agent guide for this repo

This repository is a Markdown skill library for Product-Led Growth (PLG). It is not an application/codebase; it’s a collection of instruction files.

Repo structure (don’t break this)

  • Skills live in skills/<skill-name>/SKILL.md
  • Every skill file starts with YAML front matter:
    • name: must match the directory name exactly (e.g. skills/growth-loops/name: growth-loops)
    • description: when to use the skill + a few example user phrases + cross-references

Content standards (how to write/edit skills)

  • Dense and actionable: frameworks, checklists, step-by-step playbooks, and copy/paste templates
  • Context-aware: tailor guidance to product type, persona, ACV, market, and current motion (PLG/marketing-led/sales-led)
  • Low fluff: minimize generic advice; be specific and opinionated with caveats
  • Cross-reference other skills using backticks (e.g. growth-loops) instead of duplicating content

When adding a new skill

  • Create skills/<new-skill>/SKILL.md
  • Keep name: <new-skill> aligned with the folder name
  • Update README.md:
    • add the new skill to the right table/category
    • update the Skills (N) count

What to avoid

  • Don’t change skill folder names without also updating name: and any cross-references.
  • Don’t remove the YAML front matter.
  • Don’t add unrelated tooling/code unless explicitly requested.
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. 10d ago First seen · 33 lines · 353 tokens per session scan A 1b5c6664edd8

Subscribe to this mod's changes

plg-skills AGENTS.md is an instructions file published in the GitHub repository SkeneTechnologies/plg-skills (19 stars, last pushed 7mo ago), licensed MIT. It adds 353 tokens to every session, about $0.0018 per session on Opus 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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