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Alternatives to challenge

50 AI Skills apps to use instead, best rated first.

Top picks

  1. B

    batch-grill-me

    Get

    batch-grill-me is an agent skill from Matt Pocock's skills collection, listed on skills.sh. It interviews you relentlessly about a plan until you share an understanding. It maps decisions as a tree and asks every question it can answer now

  2. W

    webapp-testing

    Get

    Native Python Playwright scripts for testing local web applications with server lifecycle management. Includes with_server.py helper to automatically start and manage single or multiple servers before running automation scripts. Supports re

  3. C

    content-research-writer

    Get

    Assists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on

  4. O

    openhue

    Get

    openhue is an agent skill from the OpenClaw project, listed on skills.sh. It lets an agent control Philips Hue lights and scenes through a Hue Bridge with the OpenHue CLI: turn lights on and off, dim rooms, set scenes such as movie mode, an

  5. I

    implement

    Get

    implement is an agent skill from Matt Pocock's skills collection, listed on skills.sh. It implements work from a spec or tickets: it fetches the ticket, works test-first at agreed seams, runs type checks and tests as it goes, reviews the re

  6. F

    frontend-design

    Get

    Distinctive, production-grade frontend interfaces that reject generic AI aesthetics through intentional design choices. Guides aesthetic direction selection (brutalist, maximalist, retro-futuristic, luxury, organic, etc.) before implementat

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artifacts-builder

Suite of tools for creating elaborate

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C

canvas-design

Design beautiful visual art in .png and .pdf formats using design philosophies

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9
M

mcp-builder

Guide for creating high-quality MCP servers to integrate external APIs

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10
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pdf

Extract text, tables, metadata, merge & annotate PDFs

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11
X

xlsx

Spreadsheet manipulation: formulas, charts, data transformations

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find-skills

Discover and install specialized agent skills from the open ecosystem

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13
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brainstorming

Transform rough ideas into fully-formed designs through structured questioning

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14
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finishing-a-development-branch

Guides completion of development work by presenting clear options

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15
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systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior

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16
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test-driven-development

Use when implementing any feature or bugfix, before writing implementation code

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17
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using-git-worktrees

Creates isolated git worktrees

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18
1

1password

Set up and use 1Password CLI for sign-in, desktop integration

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19
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apple-notes

Create, view, edit, delete, search, move, or export Apple Notes

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20
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apple-reminders

List, add, edit, complete, or delete Apple Reminders and reminder lists

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21
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bear-notes

Create, search, and manage Bear notes via grizzly CLI

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22
B

blogwatcher

Monitor blogs and RSS/Atom feeds for updates using the blogwatcher CLI

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23
B

blucli

BluOS CLI (blu) for discovery, playback, grouping, and volume

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24
C

camsnap

Capture frames or clips from RTSP/ONVIF cameras and local webcams

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25
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clawhub

Search ClawHub for plugins by default, or skills when explicitly requested

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26
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coding-agent

Delegate coding work to Codex, Claude Code, or OpenCode as background workers

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27
D

discord

Discord messaging workflows through OpenClaw's message tool

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28
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eightctl

Control Eight Sleep pods (status, temperature, alarms, schedules)

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29
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gemini

Gemini CLI one-shot prompts, summaries, generation, skills, hooks, MCP

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30
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gh-issues

Fetch GitHub issues, select candidates, spawn background fix agents, open PRs

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31
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gifgrep

Search GIF providers with CLI/TUI, download results, and extract stills/sheets

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32
G

github

GitHub CLI for issues, PRs, CI/check logs, comments, reviews, releases, repos

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33
G

gog

Google Workspace CLI for Gmail, Calendar, Drive, Contacts, Sheets, and Docs

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34
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goplaces

Query Google Places for text search, place details, resolve, reviews

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35
H

healthcheck

Audit/harden OpenClaw hosts: SSH, firewall, updates, exposure, backups

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36
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himalaya

Himalaya CLI for IMAP/SMTP mail: list, read, search, compose, reply, forward

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37
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imsg

Use the imsg CLI from OpenClaw agents for iMessage/SMS DMs, groups, replies

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38
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mcporter

List, configure, authenticate, call, and inspect MCP servers/tools

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39
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model-usage

Summarize CodexBar local cost logs by model for Codex or Claude

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40
N

nano-pdf

Edit PDFs with natural-language instructions using the nano-pdf CLI

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41
N

notion

Notion CLI/API for pages, Markdown content, data sources, files, comments

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42
O

obsidian

Work with Obsidian vaults

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43
O

openai-whisper

Local speech-to-text with the Whisper CLI (no API key)

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44
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openai-whisper-api

OpenAI Audio Transcriptions API via curl

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45
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oracle

Oracle CLI second-model review/debug/refactor/design

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46
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ordercli

Foodora-only CLI for checking past orders and active order status

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47
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peekaboo

Capture and automate macOS UI with the Peekaboo CLI

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48
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sag

ElevenLabs text-to-speech with mac-style say UX

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49
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session-logs

Search and analyze your own session logs (older/parent conversations) using jq

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50
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sherpa-onnx-tts

Local text-to-speech via sherpa-onnx (offline, no cloud)

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About challenge

C

challenge

Pre-mortem plan analysis

Challenge is an agent skill that runs a pre-mortem on a plan. You give it a plan with the command, and it imagines that the plan has failed twelve months from now and works backwards to find why. The aim is to surface weak assumptions, unquestioned dependencies and timing that worked on paper but not in the real world. The skill is not meant to kill the plan. It is meant to make the plan survive contact with reality, so the weaknesses are found while they can still be fixed. The pre-mortem idea rests on the observation that most plans fail for predictable reasons, such as overestimated demand, underestimated complexity and unexamined dependencies. It suits any plan that someone is about to commit to. It is part of the claude-skills collection by alirezarezvani and is listed on skills.sh as free.

View challengeAll AI Skills apps
Price
Free
Made by
alirezarezvani
Category
AI Skills
Website
github.com/alirezarezvani/claude-skills/challenge