learn-nexus

learn-nexus is a skill for Claude Code, Codex from DorianSchlede/nexus-template. It costs 52 tokens per session (2,037 once invoked), scanned A, original, MIT.

An advanced onboarding lesson about Nexus's design principles, best practices, and common mistakes.

In plain words
What is it for?
It helps users understand the system more deeply, avoid common workflow mistakes, and improve how they work with Nexus.
Why use it?
It helps explain why Nexus uses builds, skills, memory, and specific collaboration patterns.

Skill for Claude CodeCodex

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

Good fit It helps users understand the system more deeply, avoid common workflow mistakes, and improve how they work with Nexus.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dorianschlede/nexus-template/learn-nexus
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 DorianSchlede/nexus-template --skill learn-nexus
Clone the repo
git clone --depth 1 https://github.com/DorianSchlede/nexus-template

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 learn-nexus

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/dorianschlede/nexus-template/learn-nexus"><img src="https://agentmods.dev/badge/skills/dorianschlede/nexus-template/learn-nexus.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,037 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 $0.00052 $0.02037
Opus 5 $0.00026 $0.01019
Sonnet 5 $0.00010 $0.00407
Haiku 4.5 $0.00005 $0.00204

Measured 8d ago against content hash dfcc53fd6a7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

learn-nexus 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 8d 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.

00-system/skills/learning/learn-nexus/SKILL.md · 340 lines

How it starts

The opening of the file, as written. The whole thing — 340 lines — stays where its author put it; the contents beside it link to each section on GitHub.

[TARGET] AI Proactive Triggering (ONBOARDING SKILL)

This is an ONBOARDING skill with MEDIUM PRIORITY (suggest after core onboarding complete).

When to Proactively Suggest (AI MUST check user-config.yaml)

Check learning_tracker.completed.learn_nexus in user-config.yaml. If false:

PROACTIVELY SUGGEST when user:

  1. Has completed quick-start onboarding and other learning skills (learn-builds, learn-skills) but hasn't done learn-nexus yet - suggest as "graduation" step
  2. Asks philosophical questions ("why does Nexus work this way?", "what's the design behind...")
  3. Encounters AI patterns (false progress, incomplete reads, over-engineering)
  4. Makes common mistakes (creating builds instead of skills, skipping close-session)
  5. Expresses interest in mastering the system or best practices
  6. After using Nexus for 3+ sessions without completing this skill

Suggestion Pattern (after other onboarding):

💡 You've learned the core concepts! Ready for system mastery? 'learn nexus'
(15 min) covers the philosophy, design principles, common pitfalls, and
expert collaboration techniques.

This is the "graduation" skill - after this, you'll understand Nexus deeply.

Suggestion Pattern (encountering issues):

💡 I notice you're running into [AI pattern / common mistake]. The 'learn nexus'
skill covers exactly how to handle this. Want to take 15 minutes to learn
the system deeply? It'll prevent these issues in the future.

DO NOT suggest if:

  • learning_tracker.completed.learn_nexus: true
  • User hasn't completed core onboarding yet (suggest core skills first)
  • User is new and just getting started (too advanced for first sessions)

Learn Nexus

Master Nexus through understanding its philosophy, design principles, and practical patterns.

Purpose

Help users understand WHY Nexus works the way it does, avoid common mistakes, and collaborate effectively with AI.

Time Estimate: 15-18 minutes


Part A: The Living Knowledge Organism (3 min)

Read the full file on GitHub · 340 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. 8d ago First seen · 340 lines · 52 tokens per session scan A dfcc53fd6a7b

Subscribe to this mod's changes

learn-nexus is a skill published in the GitHub repository DorianSchlede/nexus-template (8 stars, last pushed 7mo ago), licensed MIT. It adds 52 tokens to every session and 2,037 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.

Related

Other skills, from other repositories

hr-onboarding

A new-hire onboarding plan as a single page — first week schedule, buddy + manager intro, learning track, equipment checklist, and "you're set when…" outcomes. Use when the brief mentions "onboarding", "new hire", "first week plan", or "入职".

nexu-io/open-design · 62 tokens

book-mirror

Take any book (EPUB/PDF), produce a personalized chapter-by-chapter analysis. Each chapter is preserved in detail (The Chapter) and mirrored back to the reader's actual life (The Mirror) using brain context. The mirror observes and resonates — a friend pointing out parallels, NOT a consultant rearranging the reader's…

garrytan/gbrain · 138 tokens

miniapp

Build a tiny interactive HTML playground only when someone asks to see, play with, or step through a mechanism.

yc-software/qm · 25 tokens

eli5

Explain research, papers, or technical ideas in plain English with minimal jargon, concrete analogies, and clear takeaways. Use when the user says "ELI5 this", asks for a simple explanation of a paper or research result, wants jargon removed, or asks what something technically dense actually means.

companion-inc/feynman · 63 tokens

deck-course-module

A course or workshop slide template with persistent learning goals, teaching pages, multiple-choice self-tests, and a wrap-up.

nexu-io/html-anything · 25 tokens

master-yinguang

A reference-based assistant for questions about Yinguang and Pure Land Buddhism, a Buddhist tradition focused on faith, ethical living, and practice connected with rebirth in the Pure Land. It can answer in Yinguang’s historical teaching style.

xr843/Master-skill · 274 tokens