Streamlines building Agent SDK applications from scaffolding to verification. The /new-sdk-app command asks about your project, installs the latest SDK and creates the files. Two verifier agents then check the result.
What it does
Where Agent SDK Development Plugin runs and what it adds, from its documentation
/new-sdk-app asks language, name, agent type, starting point and tooling
Installs the latest SDK and creates .env.example and .gitignore
Runs type checking (TypeScript) or syntax validation (Python)
agent-sdk-verifier-py checks Python SDK setup and patterns
agent-sdk-verifier-ts checks TypeScript config, imports and SDK usage
Reports PASS, PASS WITH WARNINGS or FAIL with doc references
When to use it
Good fit
Starting a new Claude Agent SDK project
Checking an SDK app before deploying
Reviewing API key handling in an SDK project
Not for
Apps not built on the Claude Agent SDK
How to install Agent SDK Development Plugin
You need: Claude Code; Anthropic API key for the generated app (.env)
Run Claude Code
Run /plugin install agent-sdk-dev@claude-plugins-official
Run /new-sdk-app my-project-name (or /new-sdk-app and answer the questions)
Ask 'Verify my SDK application' after changes
Permissions and security
What it can access
Creates project files and installs packages in your directory
Security notes from the maintainers
Warns not to commit .env files or hardcode API keys
Review the source before granting an agent access to credentials or production systems. We document what the maintainers state; we do not audit code.
Limitations
Verifier warnings do not block functionality but flag suboptimal patterns
Not stated by the maintainers: Release date and version history are not shown in the plugin README; The README says 'included in the Claude Code repository'; install command not stated there.
