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agent-skills: Instructions file for Claude Code

CLAUDE.md

agent-skills CLAUDE.md is an instructions file for Claude Code from PracticalSwan/agent-skills. It costs 5,993 tokens per session, scanned A, original, MIT.

Instructions for a shared repository of skills used by GitHub Copilot, Claude Code, and Codex. They define required startup reading, completion checks, synchronisation to downstream folders, and publishing rules.

In plain words
What is it for?
Use them before changing a skill and when validating, syncing, committing, or publishing those changes.
Why use it?
They prevent changes from being made without the repository's required lessons and help ensure finished work is validated and distributed correctly.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is PracticalSwan/agent-skills's own configuration. It tells Claude Code how to work on agent-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 agent-skills configures →

not rated 24repo +2 changed 19d ago A scan 5,993 tokens original MIT
View source ↗ PracticalSwan/agent-skills
Reuse

Borrowing it

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

Made for: Claude Code.

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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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<a href="https://agentmods.dev/instructions/practicalswan/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/practicalswan/agent-skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 5,993 This file is loaded in full into every session.
When invoked 5,993 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 $0.05993 $0.05993
Opus 5.5 $0.02397 $0.02397
Sonnet 5.5 $0.01199 $0.01199
Haiku 4.5 $0.00599 $0.00599

Measured 19d ago against content hash 697c73bf3ce9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-skills CLAUDE.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 19d 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.

CLAUDE.md · 476 lines

How it starts

The opening of the file, as written. The whole thing — 476 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This repository contains shared skills for GitHub Copilot, Claude Code, and Codex.

Required Session Start Rule

  • Every new session in this workspace must begin by reading LESSON.md.
  • Treat LESSON.md as required startup context before analysis, planning, edits, validation, reviews, or advisory work.
  • If LESSON.md is missing or unreadable, stop and report that blocker before continuing.

Required Completion, Sync, and Publish Rule

  • For every user-requested mutation task in this workspace, complete the requested work in C:\Users\LOQ\.copilot\skills first.
  • After the work is complete, run the repo validation, then sync outward to the downstream skill folders every time.
  • If the AI agent judges the result satisfactory, commit and push to GitHub without asking for another confirmation.
  • Treat work as satisfactory only when validation passes, sync completes, the task is complete, no requested step was skipped, no required command was rejected, no unresolved secret/security/privacy issue remains, and the final diff matches the user's request.
  • Elevate to the user before commit or push when there are security concerns, incomplete work, skipped steps, rejected or blocked required commands, validation/sync failures, unexpected unrelated dirty files that make staging unsafe, or any other reason the work is not satisfactory.
  • For read-only or advisory tasks with no file changes, do not create empty sync, commit, or push churn; report that no mutation workflow was needed.

Repository Role

  • Main branch: C:\Users\LOQ\.copilot\skills
  • New maintained skills must be added or imported here first
  • Maintained skills live here and are synced outward to downstream targets
  • Copied official superpowers are tracked here for discovery and Codex sync, but they are not maintained the same way

Current Counts

Snapshot date: 2026-10-19. Local overlay totals can differ by machine.

  • Git-tracked catalog in this repository:
    • 253 tracked skill folders
    • 221 tracked maintained skills
    • 32 tracked copied official Superpowers
  • Live local workspace snapshot (includes local-only overlays such as gws-* and recipe-* when present):
    • 311 local skill folders detected
    • 279 local maintained skills detected
    • 32 local copied official Superpowers detected

Read the full file on GitHub · 476 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. 19d ago Changed · +29 lines · +416 tokens per session 697c73bf3ce9
  2. 1mo ago Changed · +41 lines · +574 tokens per session 07eec4831822
  3. 1mo ago Changed · +25 lines · +361 tokens per session 7ae32fc1f4a8
  4. 2mo ago Changed · +28 lines · +357 tokens per session a08a81d33d8d
  5. 2mo ago Changed · +21 lines · +303 tokens per session d95563b196c5
  6. 2mo ago Changed · +12 lines · +156 tokens per session bf9f306d38c4
  7. 2mo ago First seen · 320 lines · 3,826 tokens per session scan A f354ea151ede

Subscribe to this mod's changes

agent-skills CLAUDE.md is an instructions file published in the GitHub repository PracticalSwan/agent-skills (24 stars, last pushed 20d ago), licensed MIT. It adds 5,993 tokens to every session, about $0.0240 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.

Related

agent-skills CLAUDE.md compared with instructions from other repositories

agent-skills CLAUDE.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agent-skills CLAUDE.mdPracticalSwan/agent-skillsInstructions file2420d agoMITA5,993Claude Code
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA2,022GitHub Copilot