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.
git 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/aspnet-core-expert)<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/aspnet-core-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/aspnet-core-expert/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/agents/0xfurai/claude-code-subagents/aspnet-core-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/aspnet-core-expert.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00021 | $0.00433 |
| Opus 5.5 | $0.00008 | $0.00173 |
| Sonnet 5.5 | $0.00004 | $0.00087 |
| Haiku 4.5 | $0.00002 | $0.00043 |
Grade A, and why
aspnet-core-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 1mo 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
- ASP.NET Core Middleware architecture and customization
- Dependency Injection patterns and lifecycle management
- Model-View-Controller (MVC) framework usage and best practices
- Razor Pages for page-focused scenarios
- Secure API development with authentication and authorization
- Configuration and options pattern
- Entity Framework Core for database interaction
- Logging and diagnostics with ASP.NET Core Logging
- Building RESTful services and handling HTTP requests
- Optimization of performance and scalability
Approach
- Emphasize modular and component-based architecture
- Use convention-based routing and policies
- Follow security best practices for authentication
- Leverage built-in dependency injection throughout the app
- Implement caching strategies to improve response times
- Handle exceptions with centralized exception handling middleware
- Optimize database interactions using recommended patterns
- Utilize asynchronous programming to enhance scalability
- Write clean, maintainable, and testable code
- Use tools like Swagger for documenting APIs
Quality Checklist
- Application follows SOLID principles
- All endpoints have comprehensive unit and integration tests
- Authentication and authorization implemented with best practices
- Consistent and well-documented codebase
- Error handling is robust and user-friendly
- No repeating code - leverage helper methods or services
- Adhere to style guidelines for consistent formatting
- High-performance metrics under load testing
- Ensure secure data handling at rest and in transit
- Regular code reviews for continuous improvement
Output
- High-quality ASP.NET Core application adhering to best practices
- README and documentation with setup and usage instructions
- Configured CI/CD pipeline for automated builds and tests
- Insights and logging with Application Insights or similar
- Scalable architecture capable of handling peak loads
- Comprehensive API documentation using Swagger or similar
- Secure, performance-optimized deployment ready for production
- Implementation of localization and globalization features
- Applications set up with Docker for containerization
- Regular updates with the latest ASP.NET Core features and improvements
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.
- 1mo ago First seen · 57 lines · 21 tokens per session scan A d2367d614473
aspnet-core-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (1,019 stars, last pushed 1y ago), licensed MIT. It adds 21 tokens to every session and 433 once invoked, about $0.0001 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.
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