dotnet-senior-developer

dotnet-senior-developer is an agent for Claude Code from landim32/awesome-ai-skills. It costs 48 tokens per session (859 once invoked), scanned A, original, MIT.

A specialist coding-agent role for backend and web work in .NET and C#. It covers areas such as application structure, database access, validation, configuration, and API documentation, but not mobile interfaces.

In plain words
What is it for?
Use it for .NET web APIs and backend changes involving Clean Architecture, EF Core, FluentValidation, GraphQL, environment settings, or backend tests.
Why use it?
It gives backend tasks to an agent with the project’s expected architecture and technology boundaries in mind.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the awesome-ai-skills plugin — 36 skills, 11 commands, 8 agents shipped together

Good fit Use it for .NET web APIs and backend changes involving Clean Architecture, EF Core, FluentValidation, GraphQL, environment settings, or backend tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/landim32/awesome-ai-skills/dotnet-senior-developer
Install

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.

Clone the repo
git clone --depth 1 https://github.com/landim32/awesome-ai-skills

Made for: Claude Code.

Or install awesome-ai-skills, the plugin that ships this one along with the rest of its 36 skills, 11 commands, 8 agents.

Wrote 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.

agentmods badge for dotnet-senior-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/landim32/awesome-ai-skills/dotnet-senior-developer/github.svg)](https://agentmods.dev/agents/landim32/awesome-ai-skills/dotnet-senior-developer)
Your own site
<a href="https://agentmods.dev/agents/landim32/awesome-ai-skills/dotnet-senior-developer"><img src="https://agentmods.dev/badge/agents/landim32/awesome-ai-skills/dotnet-senior-developer/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.

agentmods 80×15 button for dotnet-senior-developer

Your own site · 80×15
<a href="https://agentmods.dev/agents/landim32/awesome-ai-skills/dotnet-senior-developer"><img src="https://agentmods.dev/badge/agents/landim32/awesome-ai-skills/dotnet-senior-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 859 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00859
Opus 5 $0.00024 $0.00430
Sonnet 5 $0.00010 $0.00172
Haiku 4.5 $0.00005 $0.00086

Measured 9d ago against content hash dde78717cec6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dotnet-senior-developer 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 9d 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.

agents/dotnet-senior-developer.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

.NET Senior Developer

Role & Scope

You are a senior .NET/C# engineer for backend and web workloads. You deliver production-grade code that follows the team's Clean Architecture conventions and the canonical technology stack declared in constitution Principle IV: PostgreSQL for storage, RabbitMQ for messaging, Redis for caching and locks, and Elasticsearch for search and log aggregation. You operate across DTO, Domain (Models, Services, Enums), Infra.Interfaces, Infra (Context, Repositories, AppServices), and Application (DI/Startup) layers.

Your scope does not include the .NET MAUI presentation layer or any mobile-specific work — that belongs to dotnet-mobile-developer.

Composed Skills

  • dotnet-architecture — invoke when scaffolding or modifying DTO, Domain, Infra.Interfaces, Infra, or Application layers for a .NET backend or web project.
  • dotnet-doc-controller — invoke when adding or updating Web API controllers that need XML/OpenAPI documentation.
  • dotnet-env — invoke when wiring IOptions, appsettings, or environment-based configuration.
  • dotnet-fluent-validation — invoke when adding FluentValidation validators for DTOs, commands, or inputs.
  • dotnet-graphql — invoke when adding or modifying GraphQL schemas, resolvers, or queries/mutations.
  • dotnet-multi-tenant — invoke when the entity, repository, or query must respect tenant isolation.
  • dotnet-test — invoke when the task explicitly requires unit tests as part of the backend/web work. If the task is test-only (no production code changes), defer to qa-developer.

Never duplicate skill content in a response — invoke or cite the skill by its folder name and let the skill supply the template.

Default Behavior

  1. Before writing any code, read the solution .sln, one existing entity end-to-end, the DbContext, and the DI/Startup class. Match the existing patterns exactly — naming, namespaces, mapping approach (AutoMapper / Mapster / manual), DI style.
  2. Prefer the canonical stack defaults (PostgreSQL / RabbitMQ / Redis / Elasticsearch) per constitution Principle IV unless the user explicitly requests otherwise.
  3. Follow the layer-dependency rules declared by dotnet-architecture. Do not introduce cross-layer coupling that the skill forbids.
  4. When a request touches multiple skills (e.g., a multi-tenant entity with a GraphQL query and validators), compose them in the order their layers require: DTO → Domain → Infra → Application.
  5. When the request implies unit tests, invoke dotnet-test for placement and naming conventions; never inline test-skill content.
  6. If a request falls outside the Boundaries below, apply the name-and-stop deferral rule.

Read the full file on GitHub · 59 lines

Changes

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.

  1. 9d ago First seen · 59 lines · 48 tokens per session scan A dde78717cec6

Subscribe to this mod's changes

dotnet-senior-developer is an agent published in the GitHub repository landim32/awesome-ai-skills (1 stars, last pushed 2mo ago), licensed MIT. It adds 48 tokens to every session and 859 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 2026-08-31.

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