Agent SDK Dev

Agent SDK Development Plugin

A comprehensive plugin for creating and verifying Claude Agent SDK applications in Python and TypeScript.

Overview

The Agent SDK Development Plugin streamlines the entire lifecycle of building Agent SDK applications, from initial scaffolding to verification against best practices. It helps you quickly start new projects with the latest SDK versions and ensures your applications follow official documentation patterns.

Features

Command: /new-sdk-app

Interactive command that guides you through creating a new Claude Agent SDK application.

What it does:

• Asks clarifying questions about your project (language, name, agent type, starting point)
• Checks for and installs the latest SDK version
• Creates all necessary project files and configuration
• Sets up proper environment files (.env.example, .gitignore)
• Provides a working example tailored to your use case
• Runs type checking (TypeScript) or syntax validation (Python)
• Automatically verifies the setup using the appropriate verifier agent

Usage:

/new-sdk-app my-project-name

Or simply:

/new-sdk-app

The command will interactively ask you:

1. Language choice (TypeScript or Python)
2. Project name (if not provided)
3. Agent type (coding, business, custom)
4. Starting point (minimal, basic, or specific example)
5. Tooling preferences (npm/yarn/pnpm or pip/poetry)

Example:

/new-sdk-app customer-support-agent
# → Creates a new Agent SDK project for a customer support agent
# → Sets up TypeScript or Python environment
# → Installs latest SDK version
# → Verifies the setup automatically

Agent: agent-sdk-verifier-py

Thoroughly verifies Python Agent SDK applications for correct setup and best practices.

Verification checks:

• SDK installation and version
• Python environment setup (requirements.txt, pyproject.toml)
• Correct SDK usage and patterns
• Agent initialization and configuration
• Environment and security (.env, API keys)
• Error handling and functionality
• Documentation completeness

When to use:

• After creating a new Python SDK project
• After modifying an existing Python SDK application
• Before deploying a Python SDK application

Usage: The agent runs automatically after /new-sdk-app creates a Python project, or you can trigger it by asking:

"Verify my Python Agent SDK application"
"Check if my SDK app follows best practices"

Output: Provides a comprehensive report with:

• Overall status (PASS / PASS WITH WARNINGS / FAIL)
• Critical issues that prevent functionality
• Warnings about suboptimal patterns
• List of passed checks
• Specific recommendations with SDK documentation references

Agent: agent-sdk-verifier-ts

Thoroughly verifies TypeScript Agent SDK applications for correct setup and best practices.

Verification checks:

• SDK installation and version
• TypeScript configuration (tsconfig.json)
• Correct SDK usage and patterns
• Type safety and imports
• Agent initialization and configuration
• Environment and security (.env, API keys)
• Error handling and functionality
• Documentation completeness

When to use:

• After creating a new TypeScript SDK project
• After modifying an existing TypeScript SDK application
• Before deploying a TypeScript SDK application

Usage: The agent runs automatically after /new-sdk-app creates a TypeScript project, or you can trigger it by asking:

"Verify my TypeScript Agent SDK application"
"Check if my SDK app follows best practices"

Output: Provides a comprehensive report with:

• Overall status (PASS / PASS WITH WARNINGS / FAIL)
• Critical issues that prevent functionality
• Warnings about suboptimal patterns
• List of passed checks
• Specific recommendations with SDK documentation references

Workflow Example

Here's a typical workflow using this plugin:

1. Create a new project:

/new-sdk-app code-reviewer-agent

2. Answer the interactive questions:

Language: TypeScript
Agent type: Coding agent (code review)
Starting point: Basic agent with common features

3. Automatic verification: The command automatically runs agent-sdk-verifier-ts to ensure everything is correctly set up.

4. Start developing:

# Set your API key
echo "ANTHROPIC_API_KEY=your_key_here" > .env

# Run your agent
npm start

5. Verify after changes:

"Verify my SDK application"

Installation

This plugin is included in the Claude Code repository. To use it:

1. Ensure Claude Code is installed
2. The plugin commands and agents are automatically available

Best Practices

• Always use the latest SDK version: /new-sdk-app checks for and installs the latest version
• Verify before deploying: Run the verifier agent before deploying to production
• Keep API keys secure: Never commit .env files or hardcode API keys
• Follow SDK documentation: The verifier agents check against official patterns
• Type check TypeScript projects: Run npx tsc --noEmit regularly
• Test your agents: Create test cases for your agent's functionality

Resources

• Agent SDK Overview
• TypeScript SDK Reference
• Python SDK Reference
• Agent SDK Examples

Troubleshooting

Type errors in TypeScript project

Issue: TypeScript project has type errors after creation

Solution:

• The /new-sdk-app command runs type checking automatically
• If errors persist, check that you're using the latest SDK version
• Verify your tsconfig.json matches SDK requirements

Python import errors

Issue: Cannot import from claude_agent_sdk

Solution:

• Ensure you've installed dependencies: pip install -r requirements.txt
• Activate your virtual environment if using one
• Check that the SDK is installed: pip show claude-agent-sdk

Verification fails with warnings

Issue: Verifier agent reports warnings

Solution:

• Review the specific warnings in the report
• Check the SDK documentation references provided
• Warnings don't prevent functionality but indicate areas for improvement

Author

Ashwin Bhat (ashwin@anthropic.com)

Version

1.0.0