onboard

onboard is a skill for Claude Code from athola/claude-night-market. It costs 29 tokens per session (407 once invoked), scanned A, original, MIT.

A staged onboarding guide that gives new developers challenges about a codebase's architecture, business logic, interfaces, patterns, and error handling.

In plain words
What is it for?
It helps onboard contributors through five challenge stages, using hints and requiring demonstrated understanding before advancing.
Why use it?
It replaces an unstructured introduction with a progression that checks understanding and keeps track of progress between sessions.

Skill for Claude Code

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

Part of the gauntlet plugin — 7 skills, 6 commands, 1 agent shipped together

Good fit It helps onboard contributors through five challenge stages, using hints and requiring demonstrated understanding before advancing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/athola/claude-night-market/onboard
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 athola/claude-night-market --skill onboard
Clone the repo
git clone --depth 1 https://github.com/athola/claude-night-market

Made for: Claude Code.

Or install gauntlet, the plugin that ships this one along with the rest of its 7 skills, 6 commands, 1 agent.

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 onboard

README.md
[![agentmods](https://agentmods.dev/badge/skills/athola/claude-night-market/onboard/github.svg)](https://agentmods.dev/skills/athola/claude-night-market/onboard)
Your own site
<a href="https://agentmods.dev/skills/athola/claude-night-market/onboard"><img src="https://agentmods.dev/badge/skills/athola/claude-night-market/onboard/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 onboard

Your own site · 80×15
<a href="https://agentmods.dev/skills/athola/claude-night-market/onboard"><img src="https://agentmods.dev/badge/skills/athola/claude-night-market/onboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 407 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00029 $0.00407
Opus 5 $0.00015 $0.00204
Sonnet 5 $0.00006 $0.00081
Haiku 4.5 $0.00003 $0.00041

Measured 9d ago against content hash 0bac8c99aa2b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

onboard 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.

plugins/gauntlet/skills/onboard/SKILL.md · 54 lines

What it actually says

Guided Onboarding

Walk a new developer through the codebase in structured stages.

When NOT To Use

  • Ad-hoc questions outside a staged path (use gauntlet:challenge)
  • The knowledge base does not exist yet (use gauntlet:extract)

Stages

Stage Focus Categories Difficulty
1 Big picture architecture, data_flow 1-2
2 Core domain business_logic 2-3
3 Interfaces api_contract, data_flow 3
4 Patterns pattern, dependency 3-4
5 Hardening error_handling, business_logic 4-5

Steps

  1. Load onboarding progress
  2. Show current stage and progress summary
  3. Present 5 challenges from current stage
  4. Enable hints on first attempt
  5. Track mastery (correct twice = mastered)
  6. Check advancement (80% across 10+ challenges)
  7. Report progress

Graduation

After stage 5, the developer enters the regular gauntlet. Answer history carries over.

Exit Criteria

  • Onboarding progress persists across invocations: current stage and challenge count survive session restarts and are loaded at Step 1
  • Advancement to the next stage requires 80% correct across 10+ challenges in the current stage; partial completion does not advance
  • Mastery tracking requires correct answers twice for a given challenge before it is marked mastered
  • After Stage 5 completion, the developer's answer history carries over into the regular gauntlet challenge pool without loss
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 · 54 lines · 29 tokens per session scan A 0bac8c99aa2b

Subscribe to this mod's changes

onboard is a skill published in the GitHub repository athola/claude-night-market (337 stars, last pushed 2d ago), licensed MIT. It adds 29 tokens to every session and 407 once invoked, about $0.0001 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.