skills AGENTS.md

skills AGENTS.md is an instructions file for Codex, OpenCode from prathamdby/skills. It costs 1,356 tokens per session, scanned A, original, MIT.

Repository instructions for creating agent skills, which are reusable rules that guide an coding agent's work. They define the required writing, documentation, and self-check process.

In plain words
What is it for?
Use them when adding or updating skills in the prathamdby/skills repository, including planning the change, updating documentation, and checking files before committing.
Why use it?
They make skill additions follow the same reviewable process each time and prevent missing user approval, README updates, or final checks.

Instructions file for CodexOpenCode

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.

agentmods
npx agentmods add instructions/prathamdby/skills/agents-md
Clone the repo
git clone --depth 1 https://github.com/prathamdby/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 skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/prathamdby/skills/agents-md.svg)](https://agentmods.dev/instructions/prathamdby/skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/prathamdby/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/prathamdby/skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,356 This file is loaded in full into every session.
When invoked 1,356 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01356 $0.01356
Opus 5 $0.00678 $0.00678
Sonnet 5 $0.00271 $0.00271
Haiku 4.5 $0.00136 $0.00136

Measured 3d ago against content hash a8d750e15e9f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 3d 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 · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Skill Authoring Conventions

Rules specific to writing skills for this repository. For global agent behavior, see the global-rules skill. These conventions follow the writing-great-skills framework: a skill exists to make the agent take the same process every run. Predictability is the goal every rule below serves.

Meta-Rule: Draft Before Writing

Never write a skill file without explicit user confirmation.

  1. Propose a plan (name, location, flags, structure)
  2. Wait for user to say "yes" or request changes
  3. Only then write the SKILL.md file

This applies to every skill, no exceptions.

Meta-Rule: Update README

After writing a new skill, update README.md before committing.

  1. Add the skill to the quickstart invocation list.
  2. Add a failure mode entry in ## Why These Skills Exist if applicable.
  3. Add a row to the ## Reference table with name, link, description, and flags.

Do not commit the skill without the README update.

Meta-Rule: Self-Check Before Committing

Before committing any skill addition or update, verify every rule below by reading the files. There is no validator script; you are the check.

For every skill you touched:

  1. name, present in frontmatter, kebab-case (^[a-z0-9]+(-[a-z0-9]+)*$), 64 chars or fewer, and exactly matches the skill's directory name.
  2. description, present and 1024 characters or fewer.
  3. SKILL.md length, 100 lines or fewer.
  4. README coverage, the skill appears in the README.md quickstart list (as /<name>) and has a row in the ## Reference table linking ./skills/<name>/SKILL.md.
  5. Markdown links resolve, every real .md path linked or backticked in SKILL.md points to a file that exists. Ignore template paths containing <...> placeholders.

Fix every failure before committing. Do not commit until all five pass.


Project Structure

  • Skills live in skills/<name>/SKILL.md (project-level)
  • Never use .agents/skills/ for this repo
  • Each skill is a directory containing SKILL.md at minimum
  • Optional: REFERENCE.md, references/, assets/

Read the full file on GitHub · 129 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. 3d ago First seen · 129 lines · 1,356 tokens per session scan A a8d750e15e9f

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository prathamdby/skills (4 stars, last pushed 8d ago), licensed MIT. It adds 1,356 tokens to every session, about $0.0068 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 2026-08-31.

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