onboarding

onboarding is a skill for Claude Code from srnichols/plan-forge. It costs 37 tokens per session (1,237 once invoked), scanned A, original, MIT.

A guided introduction to a .NET codebase for a new developer. It checks the required tools, builds and tests the project, then explains the architecture, folder layout, important files, and first task.

In plain words
What is it for?
Use it when joining a team or asking how a .NET project works, including projects organized into controllers, services, and repositories.
Why use it?
It reduces the time spent figuring out how to install, run, test, and navigate an unfamiliar project.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

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.

agentmods
npx agentmods add skills/srnichols/plan-forge/onboarding
Any agent
npx skills add srnichols/plan-forge --skill onboarding
Clone the repo
git clone --depth 1 https://github.com/srnichols/plan-forge

Made for: Claude Code.

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 onboarding

README.md
[![agentmods](https://agentmods.dev/badge/skills/srnichols/plan-forge/onboarding.svg)](https://agentmods.dev/skills/srnichols/plan-forge/onboarding)
Your own site
<a href="https://agentmods.dev/skills/srnichols/plan-forge/onboarding"><img src="https://agentmods.dev/badge/skills/srnichols/plan-forge/onboarding.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,237 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00037 $0.01237
Opus 5 $0.00018 $0.00619
Sonnet 5 $0.00007 $0.00247
Haiku 4.5 $0.00004 $0.00124

Measured 2d ago against content hash 05b413e0982d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

onboarding 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.

presets/dotnet/.github/skills/onboarding/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Developer Onboarding Skill

Trigger

"Onboard me to this project" / "How does this codebase work?" / "New developer setup"

Steps

1. Environment Setup

Verify prerequisites and get the project running:

git --version
dotnet --version

If this step fails (dotnet not found): Install the .NET SDK from https://dot.net/download and retry.

dotnet restore

If this step fails: Check that NuGet sources are configured correctly and network access is available.

2. Verify Build & Tests

Use the forge_smith MCP tool to diagnose environment and setup health.

dotnet build

If this step fails: Read the error output — common causes are missing SDK version (check global.json) or missing workload.

dotnet test

If both pass: Environment is ready.

3. Architecture Overview

Read and explain:

  1. .github/copilot-instructions.md — project overview, tech stack, conventions
  2. docs/plans/PROJECT-PRINCIPLES.md — non-negotiable principles (if exists)
  3. Project structure — explain the folder layout and what lives where
  4. Key patterns — how data flows through the layers (Controller → Service → Repository)

4. Key Files Tour

Walk through the most important .NET files:

  • Entry point: Program.cs — startup, DI registration, middleware pipeline
  • Configuration: appsettings.json, appsettings.Development.json — settings per environment
  • Solution file: *.sln — project structure and dependencies
  • Database: migrations folder, DbContext, connection configuration
  • Testing: test projects, how to run specific test classes
  • CI/CD: GitHub Actions workflows, Dockerfile, deployment config

5. Plan Forge Pipeline Tour

Explain how the team works:

  1. Plans live in docs/plans/ — each feature is a hardened phase plan
  2. Guardrails live in .github/instructions/ — auto-load based on file type
  3. Pipeline prompts — Step 0–5 workflow for building features
  4. Skills — type / in Copilot Chat to see available automations
  5. Reviewer agents — specialized reviewers in .github/agents/

Read the full file on GitHub · 127 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. 2d ago First seen · 127 lines · 37 tokens per session scan A 05b413e0982d

Subscribe to this mod's changes

onboarding is a skill published in the GitHub repository srnichols/plan-forge (5 stars, last pushed 2d ago), licensed MIT. It adds 37 tokens to every session and 1,237 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 2026-09-03.