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.
npx agentmods add skills/julianromli/droid-factory-template/backend-dev-skillnpx skills add julianromli/droid-factory-template --skill backend-dev-skillgit clone --depth 1 https://github.com/julianromli/droid-factory-templateWrote 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.
[](https://agentmods.dev/skills/julianromli/droid-factory-template/backend-dev-skill)<a href="https://agentmods.dev/skills/julianromli/droid-factory-template/backend-dev-skill"><img src="https://agentmods.dev/badge/skills/julianromli/droid-factory-template/backend-dev-skill.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00043 | $0.03331 |
| Opus 5 | $0.00022 | $0.01665 |
| Sonnet 5 | $0.00009 | $0.00666 |
| Haiku 4.5 | $0.00004 | $0.00333 |
Grade A, and why
backend-dev 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 392 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Development Master - Complete Backend Engineering Workflow
Overview
This skill provides end-to-end backend development services by orchestrating multiple expert systems, advanced development techniques, and specialized tools. It transforms business requirements into production-ready backend systems with comprehensive architecture, security, scalability, and operational excellence.
Key Capabilities:
- 🏗️ Multi-Expert Backend Architecture - Coordinates backend architects, security engineers, and DevOps specialists
- 🎯 Full-Stack Development - From API design to database architecture to deployment automation
- 📊 Production-Ready Implementation - Security-first, scalable, and maintainable code generation
- 🔧 DevOps Integration - CI/CD pipelines, monitoring, and infrastructure as code
- 📋 Comprehensive Testing - Unit, integration, and end-to-end testing strategies
When to Use This Skill
Perfect for:
- New backend system development and API creation
- Legacy system modernization and microservice decomposition
- Database architecture and optimization projects
- Security implementation and compliance requirements
- Performance optimization and scalability planning
- DevOps pipeline and infrastructure automation
Triggers:
- "Create a backend API for [application]"
- "Design database architecture for [system]"
- "Build a scalable backend service"
- "Implement security and authentication"
- "Set up CI/CD and deployment pipeline"
Backend Development Expert Panel
Backend Architect (System Design)
- Focus: API design, database architecture, system scalability
- Techniques: RESTful services, GraphQL, microservices, data modeling
- Considerations: Performance, scalability, maintainability, API contracts
Security Engineer (Secure Development)
- Focus: Authentication, authorization, data protection, compliance
- Techniques: OWASP compliance, encryption, threat modeling, secure coding
- Considerations: Security by design, zero-trust principles, regulatory compliance
What ships with it
3 files beside SKILL.md 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.
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.
- 5d ago First seen · 392 lines · 43 tokens per session scan A 049a2d602e15
backend-dev is a skill published in the GitHub repository julianromli/droid-factory-template (52 stars, last pushed 8mo ago), licensed MIT. It adds 43 tokens to every session and 3,331 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-30.
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