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 skills/codewithmukesh/dotnet-claude-kit/project-setupnpx skills add codewithmukesh/dotnet-claude-kit --skill project-setupgit clone --depth 1 https://github.com/codewithmukesh/dotnet-claude-kitWhat 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 | $0.00101 | $0.01088 |
| Opus 5 | $0.00051 | $0.00544 |
| Sonnet 5 | $0.00020 | $0.00218 |
| Haiku 4.5 | $0.00010 | $0.00109 |
Grade A, and why
project-setup 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.
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Setup — Tech-Stack Advisor
This skill owns one thing: the kit's recommended tech-stack defaults and why. The workflows that consume it live elsewhere:
- Initializing a project / generating CLAUDE.md →
dotnet-init(interactive flow, architecture questionnaire, CLAUDE.md generation) - Assessing an existing codebase →
health-check(the canonical 8-dimension graded assessment) - EF Core schema, NuGet, or .NET version migrations →
migrate - Choosing an architecture →
architecture-advisor(always ask before recommending)
Core Principles
- Recommend a default, explain the why, let the user choose — Every dimension has a kit default, but defaults are starting points, not mandates. State the trade-off in one line so the choice is informed.
- Prefer built-in .NET over third-party —
HybridCacheover Redis-client wrappers, built-in rate limiting over packages, built-in OpenAPI over Swashbuckle. Fewer dependencies means fewer licensing surprises and upgrade breaks. - License-aware picks — MediatR (v13+), MassTransit (v9+), and FluentAssertions (v8+) went commercial. The kit defaults to MIT alternatives: Mediator, Wolverine, plain xUnit asserts.
- Add messaging later, not never — Most projects don't need a message bus on day one. Default to "None (add later)" and reach for Wolverine when async workflows actually appear.
Patterns
Tech-Stack Dimensions and Defaults
| Dimension | Options | Default | Why |
|---|---|---|---|
| Database | PostgreSQL, SQL Server, SQLite | PostgreSQL | Open source, best EF Core provider outside SQL Server, first-class Testcontainers support |
| Auth | JWT Bearer, OIDC (Keycloak/Auth0), None | JWT Bearer | Simplest secure default for APIs; move to OIDC when an external IdP exists |
| Caching | HybridCache, Redis, None | HybridCache | Built-in, stampede protection, L1+L2 — add Redis only as its L2 backend |
| Messaging | Wolverine (RabbitMQ), MassTransit, None | None (add later) | Premature messaging adds ops burden; Wolverine (MIT) when needed |
| Observability | Serilog + OpenTelemetry, Basic logging | Serilog + OTEL | Structured logs + traces from day one are cheap; retrofitting is not |
| Resilience | Polly v8 pipelines, Basic retry | Polly v8 | AddStandardResilienceHandler() is one line for production-grade defaults |
| API docs | Built-in OpenAPI + Scalar | OpenAPI + Scalar | Framework-maintained spec generation; Scalar replaces Swagger UI |
| Testing | xUnit v3 + Testcontainers | xUnit v3 + Testcontainers | Real databases in tests; in-memory providers hide real bugs |
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 · 82 lines · 101 tokens per session scan A fd6603979410
project-setup is a skill published in the GitHub repository codewithmukesh/dotnet-claude-kit (689 stars, last pushed 26d ago), licensed MIT. It adds 101 tokens to every session and 1,088 once invoked, about $0.0005 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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