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/stefanthecode/dotnet-ai-toolkit/aspnetcore-security-auditor.usagegit clone --depth 1 https://github.com/StefanTheCode/dotnet-ai-toolkitWhat 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 | $0.00000 | $0.00394 |
| Opus 5 | $0.00000 | $0.00197 |
| Sonnet 5 | $0.00000 | $0.00079 |
| Haiku 4.5 | $0.00000 | $0.00039 |
Grade A, and why
aspnetcore-security-auditor.USAGE 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 2d 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
How to use — ASP.NET Core Security Auditor (agent)
What it is. An agent that audits an ASP.NET Core codebase against the OWASP Top 10 and .NET-specific risks — broken access control, secrets in source, injection, insecure config, CORS, mass assignment, weak auth, vulnerable dependencies. It produces a risk-ranked report where every finding shows the vulnerable code, the concrete attack it enables, and the fix.
When to reach for it. A pre-release security pass, a periodic review, after adding auth or new endpoints, or "is my API actually secure".
How to use it. Point it at the repo/solution. It explores the attack surface itself (Program.cs, controllers, endpoints, appsettings, csproj). Example prompts:
- "Run a security audit on this API."
- "Check my ASP.NET Core app against the OWASP Top 10 before we ship."
- "Are there any secrets or access-control gaps in this repo?"
How to get the best out of it.
- Give it the full repo including config files — a lot of findings live in
appsettings, CORS setup, andProgram.cs, not just controllers. - Let it run
dotnet list package --vulnerable(allow a restore) so the dependency-CVE check is real, not version-guessing. - Focus it if you want — "just access control and auth" — to get a deeper pass on one area.
- Act on the Quick Wins section first — it's the highest-leverage subset.
What it won't do. It can't run the app, so some findings come marked "verify:" with how to confirm them. It's a code/config review, not a penetration test or DAST scan — treat it as the first line, not the only one. It won't invent vulnerabilities to pad the report.
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.
- 2d ago First seen · 19 lines · 0 tokens per session scan A 2916951b3fb3
aspnetcore-security-auditor.USAGE is an agent published in the GitHub repository StefanTheCode/dotnet-ai-toolkit (19 stars, last pushed 23d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 394 tokens. 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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