dev

dev is a skill for Claude Code from leandronsp/dotfiles. It costs 91 tokens per session (1,982 once invoked), scanned A, original, no licence file.

A senior-engineer coding workflow that first examines the codebase, clarifies requirements, proposes tests, and then implements the change using test-driven development, or TDD, where tests guide the code.

In plain words
What is it for?
Building features, fixing issues, working from a PRD or issue URL, choosing a task, writing test cases, and implementing changes in several collaboration modes.
Why use it?
It adds a repeatable process for turning a task or issue into tested code and reduces uncertainty before implementation.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Building features, fixing issues, working from a PRD or issue URL, choosing a task, writing test cases, and implementing changes in several collaboration modes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leandronsp/dotfiles/dev
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 leandronsp/dotfiles --skill dev
Clone the repo
git clone --depth 1 https://github.com/leandronsp/dotfiles

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.

agentmods badge for dev

README.md
[![agentmods](https://agentmods.dev/badge/skills/leandronsp/dotfiles/dev/github.svg)](https://agentmods.dev/skills/leandronsp/dotfiles/dev)
Your own site
<a href="https://agentmods.dev/skills/leandronsp/dotfiles/dev"><img src="https://agentmods.dev/badge/skills/leandronsp/dotfiles/dev/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 dev

Your own site · 80×15
<a href="https://agentmods.dev/skills/leandronsp/dotfiles/dev"><img src="https://agentmods.dev/badge/skills/leandronsp/dotfiles/dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,982 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 unknown 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 $0.00091 $0.01982
Opus 5.5 $0.00036 $0.00793
Sonnet 5.5 $0.00018 $0.00396
Haiku 4.5 $0.00009 $0.00198

Measured 2mo ago against content hash 970063086e97, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 2mo 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/.claude/skills/dev/SKILL.md · 200 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 200 lines · 91 tokens per session scan A 970063086e97

Subscribe to this mod's changes

dev is a skill published in the GitHub repository leandronsp/dotfiles (46 stars, last pushed 23d ago), with no licence file. It adds 91 tokens to every session and 1,982 once invoked, about $0.0004 per session on Opus 5.5. 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.

Related

dev compared with skills from other repositories

dev next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
devleandronsp/dotfilesSkill4623d agononeA91Claude Code
engram-testing-coverageGentleman-Programming/engramSkill7.8ktodayMITA25Claude Code, Codex
principle-test-behavior-not-implementationmichael-denyer/pstack-claudeSkill4.1kyesterdayMITA50Claude Code
tddcodewithmukesh/dotnet-claude-kitSkill8073d agoMITA81Claude Code
nw-ddd-eventsourcingnWave-ai/nWaveSkill6322d agoMITA38Claude Code
nw-leanux-methodologynWave-ai/nWaveSkill6322d agoMITA37Claude Code
nw-fp-clojurenWave-ai/nWaveSkill6322d agoMITA25Claude Code