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 agents/0xfurai/claude-code-subagents/astro-expertgit clone --depth 1 https://github.com/0xfurai/claude-code-subagentsWrote 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/agents/0xfurai/claude-code-subagents/astro-expert)<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/astro-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/astro-expert.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 | $0.00041 | $0.00525 |
| Opus 5 | $0.00020 | $0.00262 |
| Sonnet 5 | $0.00008 | $0.00105 |
| Haiku 4.5 | $0.00004 | $0.00052 |
Grade A, and why
astro-expert 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 4d 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.
What it actually says
Focus Areas
- Mastery of the Astro component model and templating
- Expertise in static site generation and optimization
- In-depth knowledge of Astro's routing and layout systems
- Proficient in setting up and configuring Astro integrations
- Handling content collections and dynamic data sources in Astro
- Familiarity with Markdown, MDX, and other content formats in Astro
- Comprehensive understanding of Astro's build system and configuration
- Optimization of images and assets for fast loading in Astro projects
- Efficient use of Astro's server-side rendering capabilities
- Leveraging Astro's global data fetching for improved performance
Approach
- Design clean, maintainable component structures with Astro
- Optimize build and deployment processes for Astro projects
- Prioritize performance through efficient asset management in Astro
- Utilize Astro's incremental static regeneration features effectively
- Implement seamless routing and navigation within Astro sites
- Manage global state and data sharing across Astro components
- Employ best practices in SEO and accessibility with Astro
- Create flexible, reusable components to streamline development in Astro
- Ensure optimal lighthouse scores through site performance audits
- Integrate third-party services and APIs efficiently in Astro applications
Quality Checklist
- Structured component hierarchy for scalability in Astro
- Efficient routing with minimal page load times in Astro
- Comprehensive error handling and fallback mechanisms in Astro
- Consistent styling and theming across the Astro site
- Responsive design principles applied to ensure device compatibility
- High-quality, optimized images and media resources in Astro
- Thorough testing of components and pages for Astro applications
- Comprehensive documentation of code and project structure in Astro
- Use of semantic HTML5 elements to enhance SEO in Astro
- Verification of build and deployment processes for reliability in Astro
Output
- High-performance static site with Astro's best practices
- Modular component library with reusable templates in Astro
- Dynamic content integration with minimal build times in Astro
- Comprehensive SEO-friendly site architecture with Astro
- Fully tested and optimized site for diverse user environments in Astro
- Detailed documentation for future maintenance and scalability in Astro
- Streamlined build workflows for continuous integration and delivery in Astro
- Enhanced user experience with smooth navigation and fast load times in Astro
- Robust site structure ready for future enhancements in Astro
- Successful deployment of a production-ready Astro application
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.
- 4d ago First seen · 57 lines · 41 tokens per session scan A 2dca9595f2a8
astro-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (995 stars, last pushed 10mo ago), licensed MIT. It adds 41 tokens to every session and 525 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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