Ultra-compressed commit message generator. Cuts noise from commit messages while preserving intent and reasoning. Conventional Commits format. Subject ≤50 chars, body only when "why" isn't obvious. Use when user says "write a commit", "commit message", "generate commit", "/commit", or invokes /caveman-commit. Auto-triggers when staging changes.

Decision guide for delegating to caveman-style subagents. Tells the main thread WHEN to spawn `cavecrew-investigator` (locate code), `cavecrew-builder` (1-2 file edit), or `cavecrew-reviewer` (diff review) instead of doing the work inline or using vanilla `Explore`. Subagent output is caveman-compressed so the tool-result injected back into main context is ~60% smaller — main context lasts longer across long sessions. Trigger: "delegate to subagent", "use cavecrew", "spawn investigator/builder/reviewer", "save context", "compressed agent output".

Download videos from YouTube, Bilibili, Twitter, and thousands of other sites using yt-dlp. Use when the user provides a video URL and wants to download it, extract audio (MP3), download subtitles, or select video quality. Triggers on phrases like "下载视频", "download video", "yt-dlp", "YouTube", "B站", "抖音", "提取音频", "extract audio".

Send messages and manage Slack channels. Use when asked to send Slack messages, post to channels, list channels, or fetch message history.

Evaluate YC batch companies for investment — scrapes the YC directory, researches each company and its founders (work history, LinkedIn, website), assesses founder-company fit, and exports to Google Sheets with priority rankings. Use when asked to evaluate YC companies, research a YC batch, screen startups, or do due diligence on YC companies.

Take screenshots of websites and web pages

Get current weather and forecasts using free APIs (no API key required). Use when asked about weather, temperature, forecasts, or climate conditions for any location.

Get weather forecasts - temperature, precipitation, wind, and conditions

Create polished terminal GIF recordings using VHS (Video Hardware Software) by Charmbracelet. Use when asked to create terminal demos, CLI gifs, command-line recordings, or animated terminal screenshots for documentation, READMEs, or marketing.

Verify if an email address is valid and deliverable

Web search, AI answers, content extraction, and async deep research

Monitor website uptime - check availability, response times, and status

Look up Twitter/X profiles - get bio, followers, tweets, and engagement

Email finder and verifier - find emails from domains, LinkedIn, or company search

Search TikTok - find profiles, videos, hashtags, and trending content

Send SMS messages programmatically - simple HTTP API for text messaging

Find LinkedIn profiles of a specific team or department at a company. Use when asked to get LinkedIn profiles, find team members, or look up people in a particular team/department/group at a company.

AI video conversations - create real-time video calls with AI personas

AI-powered web search, crawling, extraction, and deep research

Build a prospect list of companies with decision makers, verified contact info, and hiring/intent signals. Use when asked to find leads by industry, build an account list with specific titles, prospect companies that are actively hiring, or create a targeted outreach list filtered by company size, location, and hiring activity.

Search and visualize the world's data - get charts, insights, and embeddable knowledge cards for finance, economics, demographics, sports, and more

Monitor brand mentions, competitor activity, and industry conversations across social media and the web

Create, structure, and package agent skills. Use when designing new skills, updating existing skills, or helping users build skills with scripts, references, and assets. Triggers on requests to create skills, write SKILL.md files, or structure skill directories.

AI-powered lead enrichment - find emails, phones, and enrich company/lead data