Agent Toolkit for AWS is a collection of AWS-supported MCP servers, skills, plugins, commands, and hooks that help AI coding agents build, deploy, and manage applications on AWS. It is used by developers working with AWS services through agents such as Claude Code, Codex, Cursor, and Kiro. The catalogue entries are the toolkit's own agent extensions for AWS development and operations.
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 skills add aws/agent-toolkit-for-aws --skill launching-ec2-instance-with-best-practicesgit clone --depth 1 https://github.com/aws/agent-toolkit-for-awsWrote 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/skills/aws/agent-toolkit-for-aws/launching-ec2-instance-with-best-practices)<a href="https://agentmods.dev/skills/aws/agent-toolkit-for-aws/launching-ec2-instance-with-best-practices"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/launching-ec2-instance-with-best-practices/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/skills/aws/agent-toolkit-for-aws/launching-ec2-instance-with-best-practices"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/launching-ec2-instance-with-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00071 | $0.00414 |
| Opus 5.5 | $0.00028 | $0.00166 |
| Sonnet 5.5 | $0.00014 | $0.00083 |
| Haiku 4.5 | $0.00007 | $0.00041 |
Grade A, and why
launching-ec2-instance-with-best-practices 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.
What it actually says
Launching EC2 Instances with Best Practices
Overview
Domain expertise for launching EC2 instances with sensible defaults optimized for security, cost-efficiency, and operational best practices. Covers AMI selection, instance type recommendation, network configuration, IAM role creation, security group hardening, storage configuration, tagging strategy, and post-launch verification.
Launch an EC2 instance
To launch a fully configured EC2 instance with best-practice defaults, follow the procedure exactly. See EC2 instance launch procedure.
The procedure handles:
- Intelligent defaults based on workload type and environment
- Network validation (VPC, subnet, public/private placement)
- AMI selection with architecture compatibility checks
- Least-privilege IAM roles for required AWS service access
- Hardened security groups with minimal port exposure
- Encrypted gp3 storage with environment-appropriate retention
- Comprehensive tagging for cost tracking and organization
- Post-launch verification and connection instructions
Troubleshooting
Insufficient instance capacity
Try a different availability zone or instance type (e.g., t3a instead of t3). See the full troubleshooting guide in the launch procedure.
Instance immediately terminates
Check console output with aws ec2 get-console-output. Verify EBS volume size is sufficient and AMI is compatible with the instance type.
Cannot connect via SSH
Verify the security group allows SSH from your IP, key file permissions are 400, and the instance is running. Consider AWS Systems Manager Session Manager as an alternative.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 42 lines · 71 tokens per session scan A c118661a9e19
launching-ec2-instance-with-best-practices is a skill published in the GitHub repository aws/agent-toolkit-for-aws (2,886 stars, last pushed yesterday), licensed Apache-2.0. It adds 71 tokens to every session and 414 once invoked, about $0.0003 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 2026-09-03.
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