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dotnet-microsoft-extensions

dotnet-microsoft-extensions is a skill for Claude Code, Codex from Postpartum-genushyacinthus29/dotnet-skills. It costs 36 tokens per session (404 once invoked), scanned A, a copy of dotnet-microsoft-extensions, MIT.

A guide to Microsoft’s shared .NET infrastructure components for dependency injection, configuration, logging, options, hosted services, and outgoing HTTP clients. These components help applications start, configure, and connect their services consistently.

In plain words
What is it for?
Use it to wire services together, bind and validate settings, configure logging, add background services, and create managed HTTP clients in .NET applications.
Why use it?
It removes repeated setup code and avoids common problems such as scattered configuration, weak logging, or poorly managed HTTP connections.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 10repo +1 2d ago A scan 36 tokens copy · 91% MIT

Good fit Use it to wire services together, bind and validate settings, configure logging, add background services, and create managed HTTP clients in .NET applications.

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Install with agentmods
npx agentmods add skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions
View source ↗ Postpartum-genushyacinthus29/dotnet-skills
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.

Any agent
npx skills add Postpartum-genushyacinthus29/dotnet-skills --skill dotnet-microsoft-extensions
Clone the repo
git clone --depth 1 https://github.com/Postpartum-genushyacinthus29/dotnet-skills

Made for: Claude Code, Codex.

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-microsoft-extensions

README.md
[![agentmods](https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions/github.svg)](https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions)
Your own site
<a href="https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions"><img src="https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions/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-microsoft-extensions

Your own site · 80×15
<a href="https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions"><img src="https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-microsoft-extensions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 404 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 91% copy Near-identical to another mod 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 $0.00036 $0.00404
Opus 5 $0.00018 $0.00202
Sonnet 5 $0.00007 $0.00081
Haiku 4.5 $0.00004 $0.00040

Measured 9d ago against content hash 4986069e45d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

dotnet-microsoft-extensions 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.

Origin

This is a copy

91% identical to dotnet-microsoft-extensions — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/dotnet-microsoft-extensions/SKILL.md · 42 lines

What it actually says

Microsoft.Extensions for .NET

Trigger On

  • wiring dependency injection, configuration, logging, or options
  • introducing Generic Host patterns into non-web .NET apps
  • cleaning up service registration, typed HTTP clients, or shared infrastructure code

Workflow

  1. Prefer the Generic Host for apps that need configuration, DI, logging, hosted services, or coordinated startup.
  2. Keep service registration predictable: composition at the edge, concrete implementations hidden behind interfaces only where that abstraction buys flexibility.
  3. Use options binding for structured configuration and validate configuration at startup when bad settings would fail later at runtime.
  4. Prefer IHttpClientFactory and typed or named clients for outbound HTTP instead of ad-hoc singleton or per-call HttpClient usage.
  5. Use logging categories and config-driven log levels rather than scattered ad-hoc logging behavior.
  6. Avoid building mini-frameworks over Microsoft.Extensions unless the repo genuinely needs reusable composition primitives.

Deliver

  • clean host wiring and service registration
  • configuration and logging that are observable and testable
  • infrastructure code that fits naturally with the .NET stack

Validate

  • service lifetimes are correct
  • configuration is strongly typed where it matters
  • host setup remains easy to debug and reason about

References

  • patterns.md - DI patterns, Configuration patterns, Options pattern, Logging patterns, HttpClientFactory patterns, Hosted Service patterns
  • anti-patterns.md - Common mistakes with DI, configuration, options, logging, HttpClient, and hosted services
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 42 lines · 36 tokens per session scan A 4986069e45d5

Subscribe to this mod's changes

dotnet-microsoft-extensions is a skill published in the GitHub repository Postpartum-genushyacinthus29/dotnet-skills (10 stars, last pushed 2d ago), licensed MIT. It adds 36 tokens to every session and 404 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to dotnet-microsoft-extensions, differing in 2 lines, and is treated as a copy.

C# and .NETLanguagesagent-skillsai-agentsalexa-skills-sdkaws-lambdaazure-openaicode-analysis-truecore
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