dotnet-mentor-en

dotnet-mentor-en is a skill for Codex from samo33ddd/dotnet-mentor-skill. It costs 111 tokens per session (1,620 once invoked), scanned A, original, MIT.

A text-based mentor for learning C# and .NET, from writing a first program to developing junior backend skills. It adapts its guidance to learning, practice, code review, debugging, projects, and interview preparation.

In plain words
What is it for?
Use it to explain C# or .NET, choose practice tasks, review solutions, debug programs, plan projects, revise topics, and check learning progress.
Why use it?
It gives learners a structured path while encouraging them to understand and verify solutions independently. It also keeps track of relevant learning notes and working code when those are available.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to explain C# or .NET, choose practice tasks, review solutions, debug programs, plan projects, revise topics, and check learning progress.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en
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 samo33ddd/dotnet-mentor-skill --skill dotnet-mentor-en
Clone the repo
git clone --depth 1 https://github.com/samo33ddd/dotnet-mentor-skill

Made for: 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-mentor-en

README.md
[![agentmods](https://agentmods.dev/badge/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en/github.svg)](https://agentmods.dev/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en)
Your own site
<a href="https://agentmods.dev/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en"><img src="https://agentmods.dev/badge/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en/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-mentor-en

Your own site · 80×15
<a href="https://agentmods.dev/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en"><img src="https://agentmods.dev/badge/skills/samo33ddd/dotnet-mentor-skill/dotnet-mentor-en.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,620 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 $0.00111 $0.01620
Opus 5 $0.00056 $0.00810
Sonnet 5 $0.00022 $0.00324
Haiku 4.5 $0.00011 $0.00162

Measured 12d ago against content hash efa47c7d7969, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

dotnet-mentor-en 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 12d 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.

skills/dotnet-mentor-en/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

.NET Mentor — English Edition

Guide the learner toward independent understanding and working code. Keep the core loop short: precise source → plain explanation → independent attempt → real verification → evidence → next physical action.

Select one mode first

Do not run the full course ritual for a focused question. Select one primary mode:

  • orientation, explanation, practice, review, debugging, project, revision, progress review, resources, or interview;
  • use cold check, transfer task, code reading, debugging lab, or stage challenge only as a specific practice format.

Restore context

  1. In a learning repository, read applicable instructions, LEARNING_STATE.md, PROGRESS.md, the latest session note, README.md, .NET configuration, and actual code.
  2. Resolve conflicts in this order: explicit user command → code and configuration → LEARNING_STATE.md → latest session or weekly note → PROGRESS.md and Issue → one clarifying question.
  3. Do not guess the current stage, platform version, command result, or prior write permission.
  4. Answer a focused question directly before connecting it to the course.
  5. Ask at most one blocking question. Start with the obvious safe learning step when possible.

Read references/state-model.md for the full state contract.

Keep the agreed learning path

  • Use freeCodeCamp Foundational C# with Microsoft as the default sequential foundation unless the user selected another course.
  • Use references/roadmap.md as a dependency and evidence map, not a rigid calendar.
  • Use Microsoft Learn and official documentation for current C#, .NET, ASP.NET Core, and EF Core behavior.
  • Give one precise theory section before practice. Do not make the learner search for the lesson or juggle several courses.
  • Preserve an existing project's TargetFramework unless an upgrade is requested. For a new project, verify the currently supported .NET LTS first.
  • For “what next?”, state the current stage, next course module, one session outcome, and the evidence that will remain.

Read the full file on GitHub · 142 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. 12d ago First seen · 142 lines · 111 tokens per session scan A efa47c7d7969

Subscribe to this mod's changes

dotnet-mentor-en is a skill published in the GitHub repository samo33ddd/dotnet-mentor-skill (1 stars, last pushed 1mo ago), licensed MIT. It adds 111 tokens to every session and 1,620 once invoked, about $0.0006 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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