The AWS Dev Setup Nobody Told You About. Claude Code, Kiro Pro, and Agent Plugins.

Agent Plugins for AWS AWS recently released Agent Plugins for AWS, a set of structured skill packs for Claude Code covering serverless, deployment, SageMaker, and more. I wanted to test them. I already have a Kiro Pro subscription, so I used kiro-gateway to route Claude Code through it. No extra API subscription needed. Here’s how that worked, and what broke along the way. The Setup Claude Code supports a ANTHROPIC_BASE_URL environment variable. Point it at a local kiro-gateway instance and Claude Code thinks it’s talking to Anthropic’s API. The requests route through your Kiro Pro subscription instead. Step 1: Install Claude Code Requires Claude Code version 2.1.29 or later. npm install -g @anthropic-ai/claude-code Step 2: Clone and set up kiro-gateway git clone –depth=1 https://github.com/jwadow/kiro-gateway ~/kiro-gateway cd ~/kiro-gateway python3 -m venv .venv .venv/bin/pip install -r requirements.txt Step 3: Configure kiro-gateway Create ~/kiro-gateway/.env: PROXY_API_KEY=”kiro-local-proxy-key” KIRO_CLI_DB_FILE=”/Users/<YOUR_USER>/Library/Application Support/kiro-cli/data.sqlite3″ SERVER_HOST=”127.0.0.1″ SERVER_PORT=”9000″ The KIRO_CLI_DB_FILE path points to your kiro-cli’s auth database. On macOS it’s under ~/Library/Application Support/kiro-cli/data.sqlite3. Step 4: Start kiro-gateway ~/kiro-gateway/.venv/bin/python ~/kiro-gateway/main.py –port 9000 & Step 5: Point Claude Code at it Create ~/.claude/settings.json: { “env”: { “ANTHROPIC_BASE_URL”: “http://127.0.0.1:9000”, “ANTHROPIC_API_KEY”: “kiro-local-proxy-key”, “ANTHROPIC_MODEL”: “claude-sonnet-4-6-20250929” } } Step 6: Run Claude Code claude On first run it asks “Do you want to use this API key?” Select Yes. That’s the gateway proxy key. Anthropic never sees it. Step 7. Install Agent Plugins AWS Agent Plugins package four types of artifacts into a single installable unit: Skills: structured workflows that guide Claude through complex tasks step by step.…

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