Borrowing it
Nothing to install: this file belongs to Abilityai/abilities. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Abilityai/abilities/main/CLAUDE.mdgit clone --depth 1 https://github.com/Abilityai/abilitiesWrote 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.
[](https://agentmods.dev/instructions/abilityai/abilities/claude-md)<a href="https://agentmods.dev/instructions/abilityai/abilities/claude-md"><img src="https://agentmods.dev/badge/instructions/abilityai/abilities/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>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.
<a href="https://agentmods.dev/instructions/abilityai/abilities/claude-md"><img src="https://agentmods.dev/badge/instructions/abilityai/abilities/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01935 | $0.01935 |
| Opus 5.5 | $0.00774 | $0.00774 |
| Sonnet 5.5 | $0.00387 | $0.00387 |
| Haiku 4.5 | $0.00194 | $0.00194 |
Grade A, and why
abilities 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
This is the Abilities Plugin Marketplace - a curated collection of Claude Code plugins from Ability.ai. The project is documentation-driven: plugins are defined through YAML frontmatter and procedural markdown instructions, not traditional code.
Repository Structure
.claude-plugin/marketplace.json # Central registry of all plugins
plugins/
├── create-agent/ # Create new agents (domain wizards + custom)
├── agent-dev/ # Develop agents (skills, memory, backlog, planning)
├── trinity/ # Deploy to Trinity platform
├── dev-methodology/ # Documentation-driven development
└── utilities/ # General-purpose utility skills
Each plugin follows this structure:
plugins/[name]/
├── .claude-plugin/plugin.json # Plugin metadata
├── README.md # User documentation
├── skills/[skill-name]/ # Skill-based plugins
│ ├── SKILL.md # Skill definition with YAML frontmatter
│ └── reference.md # Technical reference
└── commands/[cmd].md # Command-based plugins
Plugin Installation
# Add marketplace (one-time)
/plugin marketplace add abilityai/abilities
# Install plugins
/plugin install create-agent@abilityai # Create new agents
/plugin install agent-dev@abilityai # Add skills, memory, backlog
/plugin install trinity@abilityai # Deploy to Trinity
/plugin install dev-methodology@abilityai # Documentation-driven dev
/plugin install utilities@abilityai # General utilities
# Manual installation from local
/plugin add ./plugins/trinity
Skill Definition Format
Skills use YAML frontmatter to declare metadata and permissions:
---
name: skill-name
description: What the skill does
allowed-tools: Read, Write, Bash
user-invocable: true
argument-hint: "[optional args]"
---
# Procedural instructions follow in markdown
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.
- 1mo ago First seen · 177 lines · 1,935 tokens per session scan A cded9139e6d5
abilities CLAUDE.md is an instructions file published in the GitHub repository Abilityai/abilities (12 stars, last pushed 3d ago), licensed MIT. It adds 1,935 tokens to every session, about $0.0077 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).