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 gmh5225/awesome-skills --skill dev-tools-skillsgit clone --depth 1 https://github.com/gmh5225/awesome-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/gmh5225/awesome-skills/dev-tools-skills)<a href="https://agentmods.dev/skills/gmh5225/awesome-skills/dev-tools-skills"><img src="https://agentmods.dev/badge/skills/gmh5225/awesome-skills/dev-tools-skills/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.
<a href="https://agentmods.dev/skills/gmh5225/awesome-skills/dev-tools-skills"><img src="https://agentmods.dev/badge/skills/gmh5225/awesome-skills/dev-tools-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00027 | $0.00908 |
| Opus 5 | $0.00014 | $0.00454 |
| Sonnet 5 | $0.00005 | $0.00182 |
| Haiku 4.5 | $0.00003 | $0.00091 |
Grade A, and why
dev-tools-skills-guide 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.
How it starts
The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Development & Code Tools Skills
Scope
Use this skill when:
- Finding or adding development tool skills
- Understanding document processing capabilities
- Working with browser automation and testing
- Organizing IDE and editor integrations
Document Processing Skills
Office Documents
| Format | Skill | Capabilities |
|---|---|---|
| DOCX | anthropics/docx | Create, edit, track changes, comments |
| XLSX | anthropics/xlsx | Formulas, charts, data transformations |
| PPTX | anthropics/pptx | Slides, layouts, templates |
| anthropics/pdf | Extract, merge, annotate, forms |
Other Formats
| Format | Skill | Capabilities |
|---|---|---|
| EPUB | claude-epub-skill | Markdown to ebook conversion |
| Reveal.js | revealjs-skill | HTML presentations |
Translation
| Format | Skill | Capabilities |
|---|---|---|
| EPUB | epub-translator | Multi-language EPUB translation with parallel processing |
| pdf-translator | PDF translation with layout preservation, Markdown/PDF output |
Browser Automation
| Tool | Skill | Use Case |
|---|---|---|
| Playwright | playwright-skill | E2E testing, web scraping |
| Puppeteer | browser-automation | Chrome automation |
| iOS Simulator | ios-simulator-skill | iOS app testing |
Testing Frameworks
| Category | Skills |
|---|---|
| TDD | test-driven-development, test-fixing |
| Property Testing | pypict-claude-skill (PICT) |
| Web Testing | webapp-testing (Playwright) |
| Fuzzing | ffuf_claude_skill (web fuzzing) |
Code Quality
| Category | Skills |
|---|---|
| Move Language | move-code-quality-skill |
| Solana | solana-dev-skill |
| Git Workflows | git-pushing, using-git-worktrees |
Visualization
| Tool | Skill |
|---|---|
| D3.js | claude-d3js-skill |
| Three.js | 3d-web-experience |
Where to Add in README
- Document tools:
Document Processing - Browser automation:
Development & Code Tools - Testing tools:
Development & Code ToolsorCollaboration & Project Management - Visualization:
Development & Code Tools
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.
- 11d ago First seen · 143 lines · 27 tokens per session scan A 3ebb3f12ae0f
dev-tools-skills-guide is a skill published in the GitHub repository gmh5225/awesome-skills (48 stars, last pushed 3d ago), licensed MIT. It adds 27 tokens to every session and 908 once invoked, about $0.0001 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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