aws-dev-toolkit

Claude Code Plugin Marketplace for Startups on AWS

A Claude Code plugin marketplace tailored to startup building on AWS.

Add the marketplace once, then install any plugin from it.

# Add the marketplace
/plugin marketplace add aws-samples/sample-claude-code-plugins-for-startups

Plugins

aws-dev-toolkit

A comprehensive AWS development toolkit — 34 skills, 11 sub-agents, 3 MCP servers, and hooks for building, migrating, and reviewing well-architected applications on AWS.

/plugin install aws-dev-toolkit@aws-samples

Or load locally during development:

claude --plugin-dir ./plugins/aws-dev-toolkit

Note: --plugin-dir loads the plugin from disk at session start. File changes are picked up on the next session — not live. /plugin update does not work for local plugins (it requires a marketplace source). Restart Claude Code to pick up changes. See Plugins Guide for details.

Usage

Once installed, the plugin's skills, agents, and MCP servers are available automatically in Claude Code. Here's how each piece works:

Skills (Automatic)

Skills activate automatically based on context — no special commands needed. Just ask naturally:

"Review this architecture for Well-Architected best practices"  → aws-architect
"Why is my CloudFormation stack failing?"                       → aws-debug
"How much is this infrastructure costing me?"                   → cost-check
"Are there security issues in my Terraform?"                    → security-review
"Estimate Bedrock costs for 50k daily invocations"              → bedrock
"I want to build a serverless API for processing images"        → aws-plan
"Compare ECS vs EKS for my workload"                            → aws-compare
"Show me a diagram of this architecture"                        → aws-diagram
"We're moving from GCP to AWS"                                  → aws-migrate

Slash Commands

Some skills are invoked explicitly via slash commands:

/aws-dev-toolkit:iac-scaffold terraform "VPC with public/private subnets and NAT"
/aws-dev-toolkit:iac-scaffold cdk "Serverless API with Lambda and DynamoDB"
/aws-dev-toolkit:aws-health-check us-east-1
/aws-dev-toolkit:aws-diagram from-iac
/aws-dev-toolkit:aws-migrate gcp

Sub-Agents (Automatic)

Sub-agents are spun up automatically when Claude determines a specialist is needed. You can also invoke them directly:

"Explore my AWS environment and summarize what's deployed"      → aws-explorer
"Run a Well-Architected review on my production workload"       → well-architected-reviewer
"Review my IaC changes before I deploy"                         → iac-reviewer
"Help me plan a migration from Azure to AWS"                    → migration-advisor
"Help me pick the right Bedrock model for classification"       → bedrock-sme
"I have a PoC agent, help me productionize it"                  → agentcore-sme
"Should I use ECS or EKS for this workload?"                    → container-sme
"Help me optimize my AWS bill"                                  → cost-optimizer

MCP Servers

The plugin ships 3 MCP servers that are used behind the scenes by skills and agents — you don't need to invoke them directly.

{
  "mcpServers": {
    "awsiac": {
      "command": "uvx",
      "args": ["awslabs.aws-iac-mcp-server@latest"],
      "env": { "FASTMCP_LOG_LEVEL": "ERROR" },
      "disabled": false
    },
    "awsknowledge": {
      "type": "http",
      "url": "https://knowledge-mcp.global.api.aws",
      "disabled": false
    },
    "awspricing": {
      "command": "uvx",
      "args": ["awslabs.aws-pricing-mcp-server@latest"],
      "env": { "FASTMCP_LOG_LEVEL": "ERROR" },
      "timeout": 120000,
      "disabled": false
    }
  }
}

Hooks

• After editing an IaC file (.tf, template.yaml, *-stack.ts, etc.), Claude reminds you to validate before deploying

Example Workflows

"I need a new service on AWS"

1. Describe what you're building — aws-plan kicks in automatically
2. Answer 3-5 discovery questions (it won't overwhelm you)
3. Review the proposed architecture, security findings, and cost estimate
4. Scaffold it — /iac-scaffold cdk "your description"
5. Edit the generated code — the hook reminds you to cdk synth && cdk diff