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.
npx agentmods add instructions/krmcbride/claude-plugins/claude-mdgit clone --depth 1 https://github.com/krmcbride/claude-pluginsWhat 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 | $0.01641 | $0.01641 |
| Opus 5 | $0.00821 | $0.00821 |
| Sonnet 5 | $0.00328 | $0.00328 |
| Haiku 4.5 | $0.00164 | $0.00164 |
Grade A, and why
claude-plugins 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 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.
How it starts
The opening of the file, as written. The whole thing — 279 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.
Repository Overview
This is a Claude Code plugin marketplace. All changes must maintain compatibility with the Claude Code plugin marketplace specification.
Required Marketplace Structure
Root Directory Requirements
MUST HAVE:
.claude-plugin/marketplace.json- Marketplace manifest (required at repository root)
Marketplace Manifest Schema (marketplace.json)
Required fields:
{
"name": "string", // Kebab-case identifier, no spaces
"owner": {
"name": "string" // Maintainer name
},
"plugins": [] // Array of plugin entries
}
Optional fields:
description: Brief marketplace overviewversion: Semantic versionmetadata.pluginRoot: Base path for relative plugin sources
Plugin Entry Schema (in marketplace.json)
Required fields:
{
"name": "string", // Kebab-case identifier, no spaces
"source": "string|object" // Plugin location (see below)
}
Source types:
- Relative path:
"./plugin-name" - GitHub:
{"source": "github", "repo": "owner/repo"} - Git URL:
{"source": "url", "url": "https://..."}
Optional fields:
description,version,author,homepage,repository,licensekeywords,category,tagsstrict: Boolean (default: true) - controls manifest handling- Component paths:
commands,agents,skills,hooks,mcpServers
Strict mode behavior:
strict: true(default): Plugin must have.claude-plugin/plugin.json; marketplace entry supplements itstrict: false: Plugin's.claude-plugin/plugin.jsonis optional; marketplace entry serves as complete manifest
Required Plugin Structure
Plugin Directory Layout
MUST HAVE:
plugin-name/
├── .claude-plugin/
│ └── plugin.json # Required when strict=true (default)
OPTIONAL components (at plugin root, not inside .claude-plugin/):
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.
- 3d ago First seen · 279 lines · 1,641 tokens per session scan A 8b788772f452
claude-plugins CLAUDE.md is an instructions file published in the GitHub repository krmcbride/claude-plugins (3 stars, last pushed 8mo ago), licensed MIT. It adds 1,641 tokens to every session, about $0.0082 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.
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).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.