skills: Instructions file for Codex

AGENTS.md

skills AGENTS.md is an instructions file for Codex, OpenCode from shikanime-labs/skills. It costs 1,621 tokens per session, scanned A, original, Apache-2.0.

A set of repository instructions for maintaining a catalogue of agent skills. It defines the directory structure, workflows, languages, commit styles, and delivery rules for several skill families.

In plain words
What is it for?
Use it when adding or changing skills, following the project’s discussion-to-issue-to-pull-request process, or working with its English, French, or NixOS-related conventions.
Why use it?
It gives coding agents consistent project rules, so contributors do not have to infer how work should be organised, discussed, reviewed, or committed.

Instructions file for CodexOpenCode

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

This is shikanime-labs/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 shikanime-labs/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/shikanime-labs/skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/shikanime-labs/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 1,621 This file is loaded in full into every session.
When invoked 1,621 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 $0.01621 $0.01621
Opus 5.5 $0.00648 $0.00648
Sonnet 5.5 $0.00324 $0.00324
Haiku 4.5 $0.00162 $0.00162

Measured 8d ago against content hash fe956e802d29, 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 8d 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 · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skills

A curated catalog of self-improved agent skills for Hermes and compatible agents. Each skill lives in its own directory with a SKILL.md.

Language: Markdown (SKILL.md)

Structure

  • skills/ — every catalog skill (org-neutral bodies, org specifics in per-skill references/)
  • README.md — Installation and usage documentation

Workflow

One doctrine — the lifecycle is discussion → issue → issue comments → PR. The issue body is the problem statement with acceptance criteria as a command-decidable tasklist (the gate ledger); the PR proves it. Skill bodies are org-neutral; organization-specific conventions load on demand from per-skill references (references/shikanime.md for shikanime, references/cloud-pi-native.md for cloud-pi-native console work).

Version Control

Use jj (Jujutsu), not git, for all local work: clone with git clone then jj git init --git-repo ., develop on bookmarks (jj new main@origin -m "…"), push with jj git push -b <branch>. Fall back to plain git only where jj is refused by the server (signed annotated tags trip pre_receive rules — git tag -s + git push origin vX.Y.Z). Fetch before starting: jj git fetch (stale clones produce empty-diff PRs).

Commit Style

  • Plain-text capitalized title, no conventional-commit prefix.
  • Body is labeled, one label per line where applicable:
    • Design: — files or skills the change is grounded in.
    • Related: — companion files, issues, or PRs.
    • Issue: #N — the linked ticket (reference only; the PR↔issue link is Development metadata, sks-pr-triage step 5).
    • Free prose explains the atomic change: what and why. Code carries no matching comment — comment only what code structurally cannot say (a workaround's why, an external contract's quirk).
  • Footers mandated by policy:
    • Signed-off-by: — required; commits must be signed (see Protect main).
    • Change-Id: — keep the originating change's id when amending.
  • Nix: dotted assignment (a.b.c = v;) for a single leaf under a shared parent key; a record literal once two or more keys share the parent, keys sorted
  • Wrap Markdown lines at 80 columns and run nix fmt before shipping.

Read the full file on GitHub · 141 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. 8d ago Changed · +3 lines · +44 tokens per session fe956e802d29
  2. 14d ago Changed · +1 lines · +18 tokens per session 7059fc333205
  3. 16d ago Changed · +5 lines · +97 tokens per session 1e9e27b8c81b
  4. 28d ago Changed · +1 lines · +22 tokens per session bf450143b4cb
  5. 1mo ago Changed · +1 lines · +20 tokens per session cd04ef3dd8a6
  6. 1mo ago Changed · +9 lines · +125 tokens per session 341730a769c4
  7. 1mo ago Changed · +8 lines · +84 tokens per session 20bb29c4f7d7
  8. 1mo ago Changed · -7 lines · -184 tokens per session bc1da74b5cf0
  9. 1mo ago Changed · -6 lines · -61 tokens per session c57af2a1d135
  10. 2mo ago First seen · 126 lines · 1,456 tokens per session scan A 0ad4585949a3

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository shikanime-labs/skills (2 stars, last pushed 3d ago), licensed Apache-2.0. It adds 1,621 tokens to every session, about $0.0065 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.

Related

skills AGENTS.md compared with instructions from other repositories

skills AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
skills AGENTS.mdshikanime-labs/skillsInstructions file23d agoApache-2.0A1,621Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode