awslabs/agent-plugins is a collection of plugins, skills, instructions, an MCP server, a hook, and a setting that guide AI coding agents in architecting, deploying, and operating software on Amazon Web Services. It is for developers using coding agents such as Claude Code, Codex, and Cursor with AWS projects. The catalogue entries are the repository's own agent workflows and supporting components.
Borrowing it
Nothing to install: this file belongs to awslabs/agent-plugins. 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/awslabs/agent-plugins/main/AGENTS.mdgit clone --depth 1 https://github.com/awslabs/agent-pluginsWrote 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/awslabs/agent-plugins/agents-md)<a href="https://agentmods.dev/instructions/awslabs/agent-plugins/agents-md"><img src="https://agentmods.dev/badge/instructions/awslabs/agent-plugins/agents-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/awslabs/agent-plugins/agents-md"><img src="https://agentmods.dev/badge/instructions/awslabs/agent-plugins/agents-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 | $0.02130 | $0.02130 |
| Opus 5.5 | $0.00852 | $0.00852 |
| Sonnet 5.5 | $0.00426 | $0.00426 |
| Haiku 4.5 | $0.00213 | $0.00213 |
Grade A, and why
agent-plugins 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 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 — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Plugins for AWS
Note:
CLAUDE.mdis a symlink to this file. Only editAGENTS.md— changes apply to both automatically.
TL;DR Pitch
This repository supports plugins - bundles of skills, MCP servers, and agent configurations that extend capabilities. The awslabs/agent-plugins marketplace includes plugins like deploy-on-aws (architecture recommendations, cost estimates, and working IaC), amazon-location-service (maps, geocoding, routing, and geospatial features), and databases-on-aws (database guidance for the AWS portfolio, starting with Aurora DSQL).
Core Concepts
Plugins vs Skills vs MCP Servers
| Concept | What It Is | Example |
|---|---|---|
| Plugin | A distributable bundle (skills + MCP servers + agents) | deploy-on-aws |
| Skill | Instructions that auto-trigger based on user intent (YAML frontmatter description) | "deploy to AWS" triggers the deploy skill |
| MCP Server | External tool integration via Model Context Protocol | awspricing for cost estimates |
| Marketplace | Registry of plugins users can install | awslabs/agent-plugins |
Key Design Decision: Skills Auto-Trigger
Skills are NOT slash commands. The agent determines when to use a skill based on the description field in YAML frontmatter. If user says "host this on AWS", the agent matches that intent to the deploy skill's description and invokes it.
Directory Structure
agent-plugins/
├── .claude-plugin/
│ └── marketplace.json # Marketplace registry
├── .github/
│ ├── workflows/ # CI (build, lint, security, etc.)
│ ├── ISSUE_TEMPLATE/
│ └── ...
├── docs/ # Role-specific guides
│ ├── DESIGN_GUIDELINES.md # Plugin design best practices
│ ├── DEVELOPMENT_GUIDE.md # Contributor setup and workflow
│ ├── MAINTAINERS_GUIDE.md # Reviewer/maintainer processes
│ └── TROUBLESHOOTING.md # Plugin troubleshooting
├── plugins/
│ ├── deploy-on-aws/
│ │ ├── .claude-plugin/
│ │ │ └── plugin.json # Plugin manifest
│ │ ├── .mcp.json # MCP server definitions
│ │ └── skills/
│ │ └── deploy/
│ │ ├── SKILL.md # Main skill (auto-triggers)
│ │ └── references/
│ │ ├── defaults.md
│ │ ├── cost-estimation.md
│ │ └── security.md
│ ├── amazon-location-service/
│ │ ├── .claude-plugin/
│ │ │ └── plugin.json
│ │ ├── .mcp.json
│ │ └── skills/
│ │ └── amazon-location-service/
│ │ ├── SKILL.md
│ │ └── references/
│ ├── databases-on-aws/
│ │ ├── .claude-plugin/
│ │ │ └── plugin.json
│ │ ├── .mcp.json
│ │ ├── hooks/
│ │ │ └── hooks.json
│ │ ├── scripts/
│ │ └── skills/
│ │ └── dsql/
│ │ ├── SKILL.md
│ │ ├── mcp/
│ │ └── references/
├── schemas/ # JSON schemas for manifests
│ ├── marketplace.schema.json
│ ├── plugin.schema.json
│ ├── mcp.schema.json
│ └── skill-frontmatter.schema.json
├── tools/ # Lint, validation, and eval scripts
│ ├── evals/ # Eval suites for plugins, kept separate from plugin clients
│ │ └── databases-on-aws/
│ │ ├── README.md
│ │ └── dsql/
│ │ ├── evals.json
│ │ ├── trigger_evals.json
│ │ ├── query_explainability_evals.json
│ │ ├── safe_query_evals.json
│ │ └── scripts/
│ │ └── run_functional_evals.py
│ ├── validate-cross-refs.cjs
│ └── ...
├── mise.toml # Tool versions and tasks
├── dprint.json
├── .markdownlint-cli2.yaml
├── .pre-commit-config.yaml
└── README.md
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 Changed · +3 tokens per session 06faa8fe4d4d
- 1mo ago First seen · 205 lines · 2,127 tokens per session scan A 5d88f864deb8
agent-plugins AGENTS.md is an instructions file published in the GitHub repository awslabs/agent-plugins (927 stars, last pushed 10d ago), licensed Apache-2.0. It adds 2,130 tokens to every session, about $0.0085 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.
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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 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).
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.