Agent skill · writing content · steipete
summarize
Summarize or transcribe URLs, YouTube/videos, podcasts, articles, transcripts, PDFs, and local files.
Why this skill is useful
Adds specific commands and configurations for summarizing various content types that the AI wouldn't reliably generate on its own.
What it needs
Requires summarize installed locally. Requires anthropic, google, openai, xai account access. About 1k tokens when loaded. Last updated 2026-08-07. 385,400 stars on the source repository.
What this skill does
Summarize Fast CLI to summarize URLs, local files, and YouTube links. When to use (trigger phrases) Use this skill immediately when the user asks any of: "use summarize.sh" "what's this link/video about?" "summarize this URL/article" "transcribe this YouTube/video" (best-effort transcript extraction; no yt-dlp needed) Quick start YouTube: summary vs transcript Best-effort transcript (URLs only): If the user asked for a transcript but it's huge, return a tight summary first, then ask which section/time range to expand. Model + keys Set the API key for your chosen provider: OpenAI: OPENAIAPIKEY Anthropic: ANTHROPICAPIKEY xAI: XAIAPIKEY Google: GEMINIAPIKEY (aliases: GOOGLEGENERATIVEAIAPIKEY, GOOGLEAPIKEY) Default model is auto; config may choose the provider/model. Useful flags --length short medium long xl xxl <chars> --max-output-tokens <count> --extract (print extracted content, no LLM summary) --json (machine readable) --firecrawl auto off always (fallback extraction) --youtube auto (Apify fallback if APIFYAPITOKEN set) Config Optional config file: ~/.summarize/config.json Optional services: FIRECRAWLAPIKEY for blocked sites APIFYAPITOKEN for YouTube fallback
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills steipete/summarize