dev-onboarding-builder

dev-onboarding-builder is a skill for Claude Code, Codex from patricio0312rev/skills. It costs 64 tokens per session (3,484 once invoked), scanned A, original, MIT.

A guide builder for bringing new developers into a software team. It creates setup instructions, a first task, troubleshooting notes, team context, and a tour of the codebase.

In plain words
What is it for?
Use it to prepare first-day onboarding guides, junior developer training materials, and step-by-step introductions to a project.
Why use it?
It gives newcomers one place to learn what access and tools they need, what to do first, and how the project is organised. This reduces setup confusion and repeated questions.

Skill for Claude CodeCodex

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

Good fit Use it to prepare first-day onboarding guides, junior developer training materials, and step-by-step introductions to a project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/patricio0312rev/skills/dev-onboarding-builder
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 patricio0312rev/skills --skill dev-onboarding-builder
Clone the repo
git clone --depth 1 https://github.com/patricio0312rev/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 dev-onboarding-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/patricio0312rev/skills/dev-onboarding-builder/github.svg)](https://agentmods.dev/skills/patricio0312rev/skills/dev-onboarding-builder)
Your own site
<a href="https://agentmods.dev/skills/patricio0312rev/skills/dev-onboarding-builder"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skills/dev-onboarding-builder/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 dev-onboarding-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/patricio0312rev/skills/dev-onboarding-builder"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skills/dev-onboarding-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,484 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. ✓ AI security review Sonnet 5 · 7 Sept 2026 📄 Read the review
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 $0.00064 $0.03484
Opus 5 $0.00032 $0.01742
Sonnet 5 $0.00013 $0.00697
Haiku 4.5 $0.00006 $0.00348

Measured 9d ago against content hash 51d14b33a013, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

dev-onboarding-builder 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

Copies of this mod

1 near-identical copy found in the catalogue:

foundation/dev-onboarding-builder/SKILL.md · 557 lines

How it starts

The opening of the file, as written. The whole thing — 557 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Developer Onboarding Builder

Create frictionless first-day experiences for new team members.

Core Workflow

  1. Assess prerequisites: Identify required tools and access
  2. Create setup guide: Step-by-step environment configuration
  3. Design first task: Choose appropriate starter assignment
  4. Add time estimates: Set expectations for each step
  5. Document common issues: Preemptive troubleshooting
  6. Introduce team: Context on people and structure
  7. Provide codebase tour: Walkthrough of key areas

Onboarding Documentation Structure

ONBOARDING.md Template

# Welcome to [Team/Project Name]! 🎉

This guide will help you get set up and productive on your first day.

**Estimated completion time:** 2-3 hours

## Before You Start

### Access Checklist

- [ ] GitHub organization access
- [ ] Slack workspace invitation
- [ ] Email account setup
- [ ] VPN credentials (if remote)
- [ ] Cloud console access (AWS/GCP/Azure)
- [ ] CI/CD dashboard access
- [ ] Project management tool (Jira/Linear)

### Tools to Install

- [ ] Node.js 20+ (via [Volta](https://volta.sh/))
- [ ] pnpm 8+
- [ ] Docker Desktop
- [ ] PostgreSQL 15+
- [ ] VS Code or preferred editor
- [ ] Git configured with your work email

## Day 1: Environment Setup

### Step 1: Clone Repository (5 min)

```bash
git clone [email protected]:company/project-name.git
cd project-name
```

Why: Get the codebase on your machine

Troubleshooting:

  • SSH key not working? See GitHub SSH setup
  • Permission denied? Ask your manager to verify GitHub access

Step 2: Install Dependencies (10 min)

# Install Volta (Node version manager)
curl https://get.volta.sh | bash

# Install dependencies
pnpm install

Expected output: "Dependencies installed successfully"

Troubleshooting:

  • pnpm not found? Restart terminal or run volta install pnpm
  • Installation hangs? Check VPN connection

Read the full file on GitHub · 557 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 · 557 lines · 64 tokens per session scan E 51d14b33a013

Subscribe to this mod's changes

dev-onboarding-builder is a skill published in the GitHub repository patricio0312rev/skills (60 stars, last pushed 8mo ago), licensed MIT. It adds 64 tokens to every session and 3,484 once invoked, about $0.0003 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.

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