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 skills add miles990/claude-software-skills --skill development-environmentgit clone --depth 1 https://github.com/miles990/claude-software-skillsWrote 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/miles990/claude-software-skills/development-environment)<a href="https://agentmods.dev/skills/miles990/claude-software-skills/development-environment"><img src="https://agentmods.dev/badge/skills/miles990/claude-software-skills/development-environment.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 5.1 | $0.00014 | $0.03495 |
| Opus 5 | $0.00007 | $0.01747 |
| Sonnet 5 | $0.00003 | $0.00699 |
| Haiku 4.5 | $0.00001 | $0.00349 |
Grade E, and why
development-environment scanned grade E with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -sS https://starship.rs/install.sh | sh Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
&& rm -rf /var/lib/apt/lists/* Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
RUN sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" How it starts
The opening of the file, as written. The whole thing — 618 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Development Environment
Overview
Setting up efficient development environments with modern tools, containers, and automation.
VS Code Setup
Settings
// .vscode/settings.json
{
// Editor
"editor.fontSize": 14,
"editor.fontFamily": "'JetBrains Mono', 'Fira Code', monospace",
"editor.fontLigatures": true,
"editor.tabSize": 2,
"editor.insertSpaces": true,
"editor.formatOnSave": true,
"editor.defaultFormatter": "esbenp.prettier-vscode",
"editor.codeActionsOnSave": {
"source.fixAll.eslint": "explicit",
"source.organizeImports": "explicit"
},
"editor.rulers": [80, 120],
"editor.minimap.enabled": false,
"editor.bracketPairColorization.enabled": true,
"editor.guides.bracketPairs": true,
"editor.inlineSuggest.enabled": true,
// Files
"files.autoSave": "onFocusChange",
"files.trimTrailingWhitespace": true,
"files.insertFinalNewline": true,
"files.exclude": {
"**/.git": true,
"**/node_modules": true,
"**/.DS_Store": true,
"**/coverage": true,
"**/dist": true
},
// Terminal
"terminal.integrated.fontSize": 13,
"terminal.integrated.fontFamily": "'JetBrains Mono', monospace",
"terminal.integrated.defaultProfile.osx": "zsh",
// TypeScript
"typescript.preferences.importModuleSpecifier": "relative",
"typescript.updateImportsOnFileMove.enabled": "always",
"typescript.suggest.autoImports": true,
// Prettier
"[typescript]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
"[javascript]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
"[json]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
// Git
"git.autofetch": true,
"git.confirmSync": false,
"git.enableSmartCommit": true
}
Extensions
// .vscode/extensions.json
{
"recommendations": [
// Essential
"esbenp.prettier-vscode",
"dbaeumer.vscode-eslint",
"ms-vscode.vscode-typescript-next",
// Git
"eamodio.gitlens",
"mhutchie.git-graph",
// Development
"ms-vscode-remote.remote-containers",
"ms-vscode.live-server",
"bradlc.vscode-tailwindcss",
// Testing
"vitest.explorer",
"ms-playwright.playwright",
// Productivity
"usernamehw.errorlens",
"streetsidesoftware.code-spell-checker",
"christian-kohler.path-intellisense",
"formulahendry.auto-rename-tag",
// Themes
"GitHub.github-vscode-theme",
"PKief.material-icon-theme"
]
}
What ships with it
4 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.
- 7d ago First seen · 618 lines · 14 tokens per session scan E ffe3e6fd8eb1
development-environment is a skill published in the GitHub repository miles990/claude-software-skills (20 stars, last pushed 7mo ago), licensed MIT. It adds 14 tokens to every session and 3,495 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it E with 3 findings (downloads and executes remote code, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
branchbox-devcontainer-guardrails
Use when modifying BranchBox devcontainer/bootstrap workflows, compose templates, feature env-stash behavior, or manual E2E harness/release docs. Apply issue.
maintenance-check-aws-eks
Check everything that can be upgraded for maintenance across an AWS EKS Kubernetes cluster and output a decision file with Jira-formatted tickets for any required upgrades.
create-dockerfile
Create optimized, secure, production-ready Dockerfiles based on user requirements and application context.
ecspresso
ECS deployment tool - deploy, manage, and troubleshoot ECS services.
implementing-container-image-minimal-base-with-distroless
Reduce container attack surface by building application images on Google distroless base images that contain only the application runtime with no shell, package manager, or unnecessary OS utilities.
docker-local-build
Build and test Kurtosis from source on local Docker. Compiles all components (engine, core, files-artifacts-expander), builds Docker images, installs the CLI, and restarts the engine. Use when developing Kurtosis and testing changes locally with Docker.