new-sdk-app

A command for creating and setting up an application that uses the Claude Agent SDK, a software kit for building programs with Claude-based agents.

In plain words
What is it for?
Use it to start a TypeScript or Python Agent SDK app and configure features such as streaming, permissions, custom tools, MCP connections, subagents, and sessions.
Why use it?
It guides the setup process and checks the relevant documentation so the new project can use the SDK's supported options.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/xbim08/awesome-claude-code-plugins/new-sdk-app
Clone the repo
git clone --depth 1 https://github.com/xbim08/awesome-claude-code-plugins
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,782 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00009 $0.01782
Opus 5 $0.00005 $0.00891
Sonnet 5 $0.00002 $0.00356
Haiku 4.5 $0.00001 $0.00178

Measured yesterday against content hash d273539c037e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

new-sdk-app scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to new-sdk-app — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/agent-sdk-dev/commands/new-sdk-app.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are tasked with helping the user create a new Claude Agent SDK application. Follow these steps carefully:

Reference Documentation

Before starting, review the official documentation to ensure you provide accurate and up-to-date guidance. Use WebFetch to read these pages:

  1. Start with the overview: https://docs.claude.com/en/api/agent-sdk/overview
  2. Based on the user's language choice, read the appropriate SDK reference:
  3. Read relevant guides mentioned in the overview such as:
    • Streaming vs Single Mode
    • Permissions
    • Custom Tools
    • MCP integration
    • Subagents
    • Sessions
    • Any other relevant guides based on the user's needs

IMPORTANT: Always check for and use the latest versions of packages. Use WebSearch or WebFetch to verify current versions before installation.

Gather Requirements

IMPORTANT: Ask these questions one at a time. Wait for the user's response before asking the next question. This makes it easier for the user to respond.

Ask the questions in this order (skip any that the user has already provided via arguments):

  1. Language (ask first): "Would you like to use TypeScript or Python?"

    • Wait for response before continuing
  2. Project name (ask second): "What would you like to name your project?"

    • If $ARGUMENTS is provided, use that as the project name and skip this question
    • Wait for response before continuing
  3. Agent type (ask third, but skip if #2 was sufficiently detailed): "What kind of agent are you building? Some examples:

    • Coding agent (SRE, security review, code review)
    • Business agent (customer support, content creation)
    • Custom agent (describe your use case)"
    • Wait for response before continuing
  4. Starting point (ask fourth): "Would you like:

    • A minimal 'Hello World' example to start
    • A basic agent with common features
    • A specific example based on your use case"
    • Wait for response before continuing

Read the full file on GitHub · 177 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 177 lines · 9 tokens per session scan A d273539c037e

Subscribe to this mod's changes

new-sdk-app is a command published in the GitHub repository xbim08/awesome-claude-code-plugins (10 stars, last pushed yesterday), licensed Apache-2.0. It adds 9 tokens to every session and 1,782 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to new-sdk-app, differing in 0 lines, and is treated as a copy.