skills: Instructions file for Codex

AGENTS.md

skills AGENTS.md is an instructions file for Codex, OpenCode from idaibin/skills. It costs 1,402 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for the idaibin/skills project. They explain how coding agents should route tasks, follow project rules, and validate skill changes.

In plain words
What is it for?
Choosing the right instructions or skill for a task, mapping the repository, editing skills or documentation, and following validation rules.
Why use it?
They reduce confusion about which project guidance or skill applies to repository work, installation, diagnosis, and feature requirements.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,402 This file is loaded in full into every session.
When invoked 1,402 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 $0.01402 $0.01402
Opus 5.5 $0.00561 $0.00561
Sonnet 5.5 $0.00280 $0.00280
Haiku 4.5 $0.00140 $0.00140

Measured 2d ago against content hash 7821544df469, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2d 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 · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Instructions

This file defines how AI agents should work on this repository. It is not the primary skill installation guide.

Task Routing

  • For repository development, documentation edits, prompt edits, skill package edits, reviews, or commits, follow the repository work rules below.
  • Only when the user explicitly asks to install Skills from this catalog's published source, read INSTALL.md and follow that installation flow.
  • Do not switch into installation mode just because this repository contains skills/.
  • Use repo-map for separate repository mapping, reuse inventory, or docs/code alignment.
  • Use api-spec for native API contract design, revision, and OpenAPI validation after business semantics are accepted; route implementation and fixed-change review to their existing owners.
  • Use domain-modeling when shared cross-functional business language or rules conflict; load lifecycle or bounded-context depth only when that shared ambiguity requires it. Route feature-local behavior and acceptance to product-spec.
  • Use to-task when accepted Product/UI/architecture contracts or later findings need technical decomposition or reconciliation into a durable task ledger with dependencies, acceptance/evidence gates, status, blockers, and next action. It does not execute or schedule tasks. Use host planning for ephemeral reasoning that does not need a maintained task artifact.
  • For concrete failures, follow the effective personal or repository diagnosis rules before permanent remediation; use the matching implementation skill only when a source change is requested.
  • Use dev-frontend, dev-typescript, dev-java, or dev-rust for requested code changes according to the actual owner.
  • Use repo-audit for bounded read-only frontend, Java, or Rust audits of existing surfaces without a change basis. Use repo-review for a fixed Worktree or immutable change basis, including changes involving authentication, authorization, secrets, untrusted input, or other security risks; assess those risks as part of the ordinary Standards axis.
  • Use repo-review for read-only review of the current Worktree/index, a fixed immutable SHA/range, or a verified review package. Resolve pull requests to fixed base/head SHAs; apply Release only as a conditional profile over a fixed basis.
  • Use ask-ai for local external-AI packages or explicitly authorized review, research, visual exploration, and decision challenge with ChatGPT, Gemini, DeepSeek, Kimi, or another named provider after the Codex-first gate; use ops-browser only for delegated low-level browser operations.
  • Use repo-delivery for categorized commits by default, explicit single commits, pushes, evidence-based branch integration, cleanup, and other Git mutations.

Read the full file on GitHub · 88 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. 2d ago Changed · +4 lines · +61 tokens per session 7821544df469
  2. 1mo ago Changed · +1 lines · +35 tokens per session 039da568697b
  3. 1mo ago Changed · -3 lines · -66 tokens per session 6c093dbc90bf
  4. 1mo ago Changed · +1 lines · +43 tokens per session 230a2c965c19
  5. 1mo ago Changed · +10 tokens per session f07bb0cfe97e
  6. 2mo ago First seen · 85 lines · 1,319 tokens per session scan A 8ce1591f6dd8

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository idaibin/skills (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,402 tokens to every session, about $0.0056 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.

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