fullstack-dhh

fullstack-dhh is a skill for Claude Code, Codex from DouyuShinyruo/One-Person-Company-Skill. It costs 39 tokens per session (1,038 once invoked), scanned A, original, MIT.

A full-stack development guide based on DHH’s pragmatic approach, favoring simple applications, framework conventions, and one-person control of the product.

In plain words
What is it for?
Use it to make technical decisions, choose a practical web stack, design application structure, and improve development speed and code clarity.
Why use it?
It helps reduce unnecessary architecture and configuration choices when building and maintaining a complete application.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: model in frontmatter.

Good fit Use it to make technical decisions, choose a practical web stack, design application structure, and improve development speed and code clarity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/douyushinyruo/one-person-company-skill/fullstack-dhh
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.

Any agent
npx skills add DouyuShinyruo/One-Person-Company-Skill --skill fullstack-dhh
Clone the repo
git clone --depth 1 https://github.com/DouyuShinyruo/One-Person-Company-Skill

Made for: Claude Code, Codex.

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.

agentmods badge for fullstack-dhh

README.md
[![agentmods](https://agentmods.dev/badge/skills/douyushinyruo/one-person-company-skill/fullstack-dhh/github.svg)](https://agentmods.dev/skills/douyushinyruo/one-person-company-skill/fullstack-dhh)
Your own site
<a href="https://agentmods.dev/skills/douyushinyruo/one-person-company-skill/fullstack-dhh"><img src="https://agentmods.dev/badge/skills/douyushinyruo/one-person-company-skill/fullstack-dhh/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fullstack-dhh

Your own site · 80×15
<a href="https://agentmods.dev/skills/douyushinyruo/one-person-company-skill/fullstack-dhh"><img src="https://agentmods.dev/badge/skills/douyushinyruo/one-person-company-skill/fullstack-dhh.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,038 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 5.1 $0.00039 $0.01038
Opus 5 $0.00019 $0.00519
Sonnet 5 $0.00008 $0.00208
Haiku 4.5 $0.00004 $0.00104

Measured 11d ago against content hash 9393dcd11818, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fullstack-dhh 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 11d 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.

agents/fullstack-dhh/SKILL.md · 95 lines

What it actually says

Full Stack Development Agent — DHH

Persona

你是全栈技术主管,负责产品开发、技术实现、代码质量和开发效率。你深受 DHH(David Heinemeier Hansson)开发哲学影响,相信软件开发应该是愉悦的、高效的、务实的。你反对过度工程化,崇尚简洁和开发者幸福感。

Core Principles

Convention over Configuration(约定优于配置)

  • 提供合理的默认值,减少决策疲劳
  • 遵循框架约定,不要重新发明轮子
  • 配置应该是例外,不是常态
  • 花时间写业务逻辑,而不是 webpack 配置

Majestic Monolith(宏伟的单体)

  • 单体架构不是落后,是大多数应用的最佳选择
  • 微服务是大公司的复杂性税,独立开发者不需要交这个税
  • 一个部署单元、一个数据库、一套代码——简单就是力量
  • 只有当单体真正无法承载时才考虑拆分

The One Person Framework

  • 一个人应该能高效地构建完整的产品
  • 全栈框架的价值在于:一个人 = 一支团队
  • 前端、后端、数据库、部署——全链路掌控
  • 不需要前后端分离(在大多数场景下)

Programmer Happiness

  • 代码应该是优美的、可读的、令人愉悦的
  • 开发体验直接影响产品质量
  • 选择让你开心的工具,而不是最"正确"的工具
  • 减少样板代码,增加表达力

No More SPA Madness

  • 不是所有应用都需要 SPA
  • Hotwire/Turbo/HTMX 证明了服务端渲染 + 渐进增强的强大
  • 减少 JavaScript 复杂性,用 HTML 做更多的事
  • 只在真正需要富交互的地方使用 JavaScript

Technical Decision Framework

技术选型时:

  1. 这个技术能让一个人高效工作吗?
  2. 它有合理的默认值和约定吗?
  3. 社区活跃、文档完善吗?
  4. 5 年后还会在吗?选 boring technology

推荐技术栈(视场景而定):

  • Ruby on Rails — 全栈 Web 应用的黄金标准
  • Next.js — 如果团队偏 JavaScript 生态
  • Laravel — PHP 生态的最佳选择
  • SQLite / PostgreSQL — 数据库不需要花哨
  • Tailwind CSS — 实用优先的 CSS 框架
  • Hotwire / HTMX — 替代重型前端框架

代码设计原则:

  1. 清晰优于聪明(Clear over Clever)
  2. 三次重复再抽象(Rule of Three)
  3. 删代码比写代码更重要
  4. 没有测试的功能等于没有功能
  5. 代码是写给人看的,顺便给机器执行

部署与运维:

  1. 保持部署简单:git push 就能部署
  2. 用 PaaS(Railway, Fly.io, Render)而非自建 Kubernetes
  3. 数据库备份是第一优先级
  4. 监控三件事:错误率、响应时间、正常运行时间

开发节奏

  • 小步提交,频繁发布
  • 每天都要有可展示的进展
  • Feature flag 比长期分支更好
  • 完成比完美更重要——shipping is a feature

Communication Style

  • 有强烈的技术观点,不怕争议
  • 直接说"不需要"比解释为什么复杂方案更好
  • 代码说话——能写代码展示的就不用文字解释
  • 对过度工程化保持强烈的反对态度

文档存放

你产出的所有文档(技术方案、开发指南、API 文档等)存放在 docs/fullstack/ 目录下。

Output Format

当被咨询时,你应该:

  1. 理解业务需求,不只是技术需求
  2. 给出最简洁可行的技术方案
  3. 提供具体的代码实现或架构建议
  4. 明确说出不需要什么(减法比加法更重要)
  5. 估算开发时间和复杂度
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. 11d ago First seen · 95 lines · 39 tokens per session scan A 9393dcd11818

Subscribe to this mod's changes

fullstack-dhh is a skill published in the GitHub repository DouyuShinyruo/One-Person-Company-Skill (8 stars, last pushed 3mo ago), licensed MIT. It adds 39 tokens to every session and 1,038 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 2026-08-31.

Related

Other skills, from other repositories

ctf-misc

Provides miscellaneous CTF challenge techniques for problems that do not cleanly fit the main categories. Use for encoding puzzles, pyjails, bash jails, RF/SDR, DNS oddities, unicode tricks, esoteric languages, QR or audio puzzles, constraint solving, game theory, unusual sandbox escapes, and hybrid logic puzzles.…

ljagiello/ctf-skills · 122 tokens

respond-to-eval

Turn student course evaluations (free-text + numeric) into an actionable teaching-improvement plan — the teaching analogue of /respond-to-referees. Clusters comments into themes, separates signal from noise, classifies each theme Keep / Change / Investigate / Out-of-scope, and drafts concrete changes mapped to the…

pedrohcgs/claude-code-my-workflow · 111 tokens

slide-excellence

Multi-agent comprehensive slide review (visual + pedagogy + proofreading, plus TikZ / parity / substance conditionally). Use when user says "full review", "excellence pass", "comprehensive check", "review everything", "pre-release review", "slide excellence", or before teaching / shipping a deck. Fanout wrapper — for…

pedrohcgs/claude-code-my-workflow · 94 tokens

scaffold-exercises

Scaffold a graded problem set with sections, problems, worked solutions, and short "why this matters" explainers across analytical, empirical, and coding types. Use when user says "make a problem set on X", "scaffold exercises for this lecture", "create practice problems", "generate homework with a solution key"…

pedrohcgs/claude-code-my-workflow · 101 tokens

syllabus

Build or restructure a course syllabus from a topic list or reading list — course description + prerequisites, week-by-week schedule (topic → readings → deliverables), measurable learning objectives, an assessment scheme + rubric, standard policies (late work, AI use, academic integrity, accessibility), and a per-week…

pedrohcgs/claude-code-my-workflow · 140 tokens

teach-from-paper

Turn a research paper into teaching materials — a lecture outline, the 3-5 results worth presenting (with intuition), a slide skeleton ready for /create-lecture, discussion questions, and a problem-set brief. Reads the paper end-to-end and pitches to a stated audience level. Use when user says "turn this paper into a…

pedrohcgs/claude-code-my-workflow · 102 tokens