What is backend-development?

A set of coding-agent tools for designing backend APIs, GraphQL services, and long-running workflows. It also covers test-driven development, where tests are written before the implementation.

Use it for API design, GraphQL architecture, microservices, Temporal workflow orchestration, event-driven systems, and test-driven backend work.

It helps developers plan backend architecture and coordinate complex services and workflows without handling every design decision alone.

backend-development — Plugin for Claude Code by EngineerWithAI: A set of coding-agent tools for designing backend APIs…

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.

Claude Code

/plugin marketplace add EngineerWithAI/engineerwith-agents

agentmods

npx agentmods add plugins/engineerwithai/engineerwith-agents/backend-development

Clone the repo

git clone --depth 1 https://github.com/EngineerWithAI/engineerwith-agents

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/engineerwithai/engineerwith-agents/backend-development.svg)](https://agentmods.dev/plugins/engineerwithai/engineerwith-agents/backend-development)

Your own site

<a href="https://agentmods.dev/plugins/engineerwithai/engineerwith-agents/backend-development"><img src="https://agentmods.dev/badge/plugins/engineerwithai/engineerwith-agents/backend-development.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 9 skills cost 357 tokens a session between them.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

backend-development 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 3d ago.

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.

.claude-plugin/marketplace.json#backend-development · 46 lines

What it actually says

{
  "name": "backend-development",
  "source": "./plugins/backend-development",
  "description": "Backend API design, GraphQL architecture, workflow orchestration with Temporal, and test-driven backend development",
  "version": "1.2.3",
  "author": {
    "name": "Mike Mayer",
    "url": "https://github.com/EngineerWithAI"
  },
  "homepage": "https://github.com/EngineerWithAI/engineerwith-agents",
  "repository": "https://github.com/EngineerWithAI/engineerwith-agents",
  "license": "MIT",
  "keywords": [
    "backend",
    "api-design",
    "graphql",
    "tdd",
    "architecture",
    "temporal",
    "workflow-orchestration",
    "distributed-systems"
  ],
  "category": "development",
  "strict": false,
  "commands": [
    "./commands/feature-development.md"
  ],
  "agents": [
    "./agents/backend-architect.md",
    "./agents/graphql-architect.md",
    "./agents/tdd-orchestrator.md",
    "./agents/temporal-python-pro.md",
    "./agents/event-sourcing-architect.md"
  ],
  "skills": [
    "./skills/api-design-principles",
    "./skills/architecture-patterns",
    "./skills/microservices-patterns",
    "./skills/workflow-orchestration-patterns",
    "./skills/temporal-python-testing",
    "./skills/event-store-design",
    "./skills/projection-patterns",
    "./skills/saga-orchestration",
    "./skills/cqrs-implementation"
  ]
}

Contents

What it installs

The manifest is a name and a version. 9 skills travel with it, and installing the plugin installs all of them — 357 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#backend-development in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

marketplace.json 65 KB

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.

3d ago First seen · 46 lines scan A 2592aad99ead

Subscribe to this mod's changes

backend-development is a plugin published in the GitHub repository EngineerWithAI/engineerwith-agents (4 stars, last pushed 7mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Backend and APIs TDD Testing