I tried out the Agent Toolkit for AWS integration feature of the AWS CLI

PS C:\> aws --version
aws-cli/2.35.10 Python/3.14.5 Windows/11 exe/AMD64
PS C:\> claude --version
2.1.187 (Claude Code)
PS C:\> kiro --version
0.12.333
c7e35289ee989c7c61a1e9440d48b51361d95a10
x64

# An encoding-related error occurs when running the command
aws: [ERROR]: 'cp932' codec can't encode character '\u2014' in position 21: illegal multibyte sequence

# Set the PYTHONUTF8 environment variable. If you want to persist it, add it to your profile.
$env:PYTHONUTF8=1

# Specifying a region other than us-east-1, like --region ap-northeast-1, causes a different error
aws configure agent-toolkit --region ap-northeast-1

# At this point, specifying --region us-east-1 is effectively mandatory
aws configure agent-toolkit --region us-east-1

# Get a list of installed skills
PS C:\> aws agent-toolkit list-installed-skills
{
    "skills": [
        {
            "agent": "Claude Code",
            "name": "amazon-bedrock",
            "path": "C:\\Users\\shibata/.claude/skills\\amazon-bedrock\\SKILL.md"
        },
        {
            "agent": "Claude Code",
            "name": "aws-billing-and-cost-management",
            "path": "C:\\Users\\shibata/.claude/skills\\aws-billing-and-cost-management\\SKILL.md"
        },
        {
            "agent": "Claude Code",
            "name": "aws-blocks",
            "path": "C:\\Users\\shibata/.claude/skills\\aws-blocks\\SKILL.md"
        },
# ・・・(omitted)・・・
        {
            "agent": "Claude Code",
            "name": "aws-serverless",
            "path": "C:\\Users\\shibata/.claude/skills\\aws-serverless\\SKILL.md"
        },
        {
            "agent": "Claude Code",
            "name": "signing-in-to-aws",
            "path": "C:\\Users\\shibata/.claude/skills\\signing-in-to-aws\\SKILL.md"
        }
    ]
}

# Get all available skills
PS C:\> aws agent-toolkit list-available-skills --region us-east-1
{
    "skills": [
        {
            "name": "amazon-aurora-mysql",
            "description": "Amazon Aurora MySQL — creates, modifies, and advises on Aurora MySQL clusters specifically (MySQL-compatible engine, Aurora serverless, parallel query). Trigger for Aurora MySQL cluster operations, ACU sizing, I/O-Optimized storage, commitment pricing, or MySQL upgrade planning. Aurora MySQL uses full (VPC-based) configuration — express configuration is PostgreSQL-only. For Aurora PostgreSQL, use amazon-aurora-postgresql instead. Contains safety guardrails and response templates that override defaults.",
            "skillVersion": "v1",
            "categories": []
        },
# ・・・(omitted)・・・
        {
            "name": "troubleshooting-s3-files",
            "description": "Diagnoses and resolves Amazon S3 Files issues including mount failures, permission errors, synchronization problems, and performance issues. Use when the user has an S3 file system that is not mounting, returning access denied, not syncing changes to S3, showing files in lost+found, or performing slower than expected.\n",
            "skillVersion": "v1",
            "categories": []
        }
    ]
}

# Search available skills
PS C:\> aws agent-toolkit search-skills --search-query ec2 --region us-east-1
{
    "skills": [
        {
            "name": "launching-ec2-instance-with-best-practices",
            "description": "Launches an EC2 instance with secure, cost-efficient defaults including AMI selection, burstable instance sizing, least-privilege IAM roles, hardened security groups, encrypted EBS volumes, and comprehensive tagging. Use when deploying new EC2 instances following AWS best practices for security and cost optimization.",
            "skillVersion": "v1",
            "categories": []
        },
# ・・・(omitted)・・・
        {
            "name": "connecting-vpcs-with-peering",
            "description": "Establishes VPC peering connections between two VPCs for direct private network connectivity. Always use this skill when creating or managing VPC peering — it validates CIDR overlap, updates all route tables in both VPCs, configures DNS resolution, and provides security group guidance that are critical for correct connectivity.",
            "skillVersion": "v1",
            "categories": []
        }
    ]
}

# The content of SKILL.md is output to standard output
PS C:\> aws agent-toolkit get-skill-file --skill-name aws-serverless --file-path SKILL.md --region us-east-1
---
name: aws-serverless
description: >-
  Builds, deploys, manages, debugs, configures, and optimizes serverless applications
  on AWS using Lambda, API Gateway, Step Functions, EventBridge, and SAM/CDK. Covers
  cold starts, CORS debugging, event source mappings, troubleshooting, concurrency,
  SnapStart, Powertools, function URLs, EventBridge Scheduler, Lambda layers, and
  production readiness. Triggers on mentions of Lambda, API Gateway, Step Functions,
  SAM templates, CDK serverless stacks, DynamoDB stream triggers, SQS event sources,
  cold starts, timeouts, 502/504 errors, throttling, concurrency, CORS, Powertools,
  or any event-driven architecture on AWS, even without the word "serverless." Does
  not apply to EC2, ECS/Fargate containers, or Amplify hosting.
version: 1
---

# ・・・(rest omitted)・・・

# If you want to save the file, use redirection or similar
PS C:\> aws agent-toolkit get-skill-file --skill-name aws-serverless --file-path SKILL.md --region us-east-1 > C:\temp\SKILL.md

# Get the metadata of the aws-serverless skill
PS C:\> aws agent-toolkit get-skill-metadata --skill-name aws-serverless --region us-east-1
{
    "name": "aws-serverless",
    "skillVersion": "v1",
    "description": "Builds, deploys, manages, debugs, configures, and optimizes serverless applications on AWS using Lambda, API Gateway, Step Functions, EventBridge, and SAM/CDK. Covers cold starts, CORS debugging, event source mappings, troubleshooting, concurrency, SnapStart, Powertools, function URLs, EventBridge Scheduler, Lambda layers, and production readiness. Triggers on mentions of Lambda, API Gateway, Step Functions, SAM templates, CDK serverless stacks, DynamoDB stream triggers, SQS event sources, cold starts, timeouts, 502/504 errors, throttling, concurrency, CORS, Powertools, or any event-driven architecture on AWS, even without the word \"serverless.\" Does not apply to EC2, ECS/Fargate containers, or Amplify hosting.",
    "categories": [
        "aws-core"
    ],
    "files": [
        {
            "path": "SKILL.md"
        },
        {
            "path": "assets/powertools-handler.py"
        },
        {
            "path": "references/api-gateway.md"
        },
        {
            "path": "references/architecture.md"
        },
        {
            "path": "references/concurrency.md"
        },
        {
            "path": "references/deployment.md"
        },
        {
            "path": "references/event-sources.md"
        },
        {
            "path": "references/lambda.md"
        },
        {
            "path": "references/orchestration.md"
        },
        {
            "path": "references/production.md"
        },
        {
            "path": "references/troubleshooting.md"
        }
    ]
}

# Add the amazon-aurora-mysql skill to Claude Code
PS C:\> aws agent-toolkit add-skill --skill-name amazon-aurora-mysql --agent claude-code --region us-east-1
  Installed amazon-aurora-mysql (v1) to Claude Code — C:\Users\shibata/.claude/skills.

# Update the amazon-aurora-mysql skill installed in Claude Code
PS C:\> aws agent-toolkit update-skill --skill-name amazon-aurora-mysql --agent claude-code --region us-east-1
amazon-aurora-mysql is already up to date (v1).

# Uninstall the amazon-aurora-mysql skill from Claude Code
PS C:\> aws agent-toolkit remove-skill --skill-name amazon-aurora-mysql --agent claude-code
Removed amazon-aurora-mysql from Claude Code — C:\Users\shibata/.claude/skills.