act-sdk-js: Skill for Claude Code

.agents/skills/onboard/SKILL.md

onboard is a skill for Claude Code, Codex from act-sdk/act-sdk-js. It costs 28 tokens per session (1,742 once invoked), scanned A, a copy of onboard, MIT.

A design process for helping first-time users understand and start using a product. It covers onboarding flows, empty screens, examples, user confusion, and the first useful action.

In plain words
What is it for?
Use it to create or improve welcome screens, setup steps, empty states, examples, and other first-use experiences.
Why use it?
It addresses the points where new users get stuck, misunderstand the product, or leave before reaching its main benefit.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is act-sdk/act-sdk-js's own configuration. It tells Claude Code and Codex how to work on act-sdk-js itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything act-sdk-js configures →

Reuse

Borrowing it

Nothing to install: this file belongs to act-sdk/act-sdk-js. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/act-sdk/act-sdk-js/main/.agents/skills/onboard/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/act-sdk/act-sdk-js

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 onboard

README.md
[![agentmods](https://agentmods.dev/badge/skills/act-sdk/act-sdk-js/onboard/github.svg)](https://agentmods.dev/skills/act-sdk/act-sdk-js/onboard)
Your own site
<a href="https://agentmods.dev/skills/act-sdk/act-sdk-js/onboard"><img src="https://agentmods.dev/badge/skills/act-sdk/act-sdk-js/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/act-sdk/act-sdk-js/onboard"><img src="https://agentmods.dev/badge/skills/act-sdk/act-sdk-js/onboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,742 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 91% copy Near-identical to another mod 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 $0.00028 $0.01742
Opus 5.5 $0.00011 $0.00697
Sonnet 5.5 $0.00006 $0.00348
Haiku 4.5 $0.00003 $0.00174

Measured 1mo ago against content hash d3590b654e53, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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

This is a copy

91% identical to onboard — 17 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/onboard/SKILL.md · 242 lines

How it starts

The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create or improve onboarding experiences that help users understand, adopt, and succeed with the product quickly.

Assess Onboarding Needs

Understand what users need to learn and why:

  1. Identify the challenge:

    • What are users trying to accomplish?
    • What's confusing or unclear about current experience?
    • Where do users get stuck or drop off?
    • What's the "aha moment" we want users to reach?
  2. Understand the users:

    • What's their experience level? (Beginners, power users, mixed?)
    • What's their motivation? (Excited and exploring? Required by work?)
    • What's their time commitment? (5 minutes? 30 minutes?)
    • What alternatives do they know? (Coming from competitor? New to category?)
  3. Define success:

    • What's the minimum users need to learn to be successful?
    • What's the key action we want them to take? (First project? First invite?)
    • How do we know onboarding worked? (Completion rate? Time to value?)

CRITICAL: Onboarding should get users to value as quickly as possible, not teach everything possible.

Onboarding Principles

Follow these core principles:

Show, Don't Tell

  • Demonstrate with working examples, not just descriptions
  • Provide real functionality in onboarding, not separate tutorial mode
  • Use progressive disclosure - teach one thing at a time

Make It Optional (When Possible)

  • Let experienced users skip onboarding
  • Don't block access to product
  • Provide "Skip" or "I'll explore on my own" options

Time to Value

  • Get users to their "aha moment" ASAP
  • Front-load most important concepts
  • Teach 20% that delivers 80% of value
  • Save advanced features for contextual discovery

Context Over Ceremony

  • Teach features when users need them, not upfront
  • Empty states are onboarding opportunities
  • Tooltips and hints at point of use

Respect User Intelligence

  • Don't patronize or over-explain
  • Be concise and clear
  • Assume users can figure out standard patterns

Design Onboarding Experiences

Read the full file on GitHub · 242 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. 1mo ago First seen · 242 lines · 28 tokens per session scan A d3590b654e53

Subscribe to this mod's changes

onboard is a skill published in the GitHub repository act-sdk/act-sdk-js (3 stars, last pushed 4mo ago), licensed MIT. It adds 28 tokens to every session and 1,742 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to onboard, differing in 17 lines, and is treated as a copy.

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