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Summarize
by
utromaya-code
· GitHub ↗
· v1.0.0
· MIT-0
374
Downloads
0
Stars
2
Active Installs
1
Versions
Install in OpenClaw
/install content-summarizer
Description
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
README (SKILL.md)
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-dlpneeded)
Quick start
summarize "https://example.com" --model google/gemini-3-flash-preview
summarize "/path/to/file.pdf" --model google/gemini-3-flash-preview
summarize "https://youtu.be/dQw4w9WgXcQ" --youtube auto
YouTube: summary vs transcript
Best-effort transcript (URLs only):
summarize "https://youtu.be/dQw4w9WgXcQ" --youtube auto --extract-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:
OPENAI_API_KEY - Anthropic:
ANTHROPIC_API_KEY - xAI:
XAI_API_KEY - Google:
GEMINI_API_KEY(aliases:GOOGLE_GENERATIVE_AI_API_KEY,GOOGLE_API_KEY)
Default model is google/gemini-3-flash-preview if none is set.
Useful flags
--length short|medium|long|xl|xxl|\x3Cchars>--max-output-tokens \x3Ccount>--extract-only(URLs only)--json(machine readable)--firecrawl auto|off|always(fallback extraction)--youtube auto(Apify fallback ifAPIFY_API_TOKENset)
Config
Optional config file: ~/.summarize/config.json
{ "model": "openai/gpt-5.2" }
Optional services:
FIRECRAWL_API_KEYfor blocked sitesAPIFY_API_TOKENfor YouTube fallback
Usage Guidance
This skill appears to do what it says, but review a few items before installing: (1) Inspect the Homebrew formula in steipete/tap to see what the package installs and where it fetches code from (third‑party taps are higher risk than official taps). (2) Only set API keys you trust and scope them appropriately — the CLI will use your provider keys to send content to external LLMs. (3) Check and secure the optional config file (~/.summarize/config.json) so it doesn't store secrets in plaintext or with wide permissions. (4) If you need higher assurance, run the binary in a sandbox or container the first time and monitor network activity to confirm it only accesses expected endpoints (LLM providers, crawl services) and not unrelated services.
Capability Analysis
Type: OpenClaw Skill
Name: content-summarizer
Version: 1.0.0
The skill is a legitimate utility for summarizing URLs, local files, and YouTube transcripts using the 'summarize' CLI tool. It installs via a standard Homebrew tap (steipete/tap/summarize) and utilizes common environment variables for LLM API keys (e.g., OPENAI_API_KEY, GEMINI_API_KEY). No malicious code, data exfiltration, or suspicious prompt-injection instructions were found in SKILL.md or _meta.json.
Capability Assessment
Purpose & Capability
The name/description (summarize URLs, local files, YouTube) aligns with the declared runtime requirement of a 'summarize' binary and the CLI examples. The listed provider API keys (OPENAI_API_KEY, ANTHROPIC_API_KEY, GEMINI_API_KEY/XAI_API_KEY) and optional service keys (FIRECRAWL_API_KEY, APIFY_API_TOKEN) are coherent with a tool that fetches content and uses external LLMs or crawling fallbacks. One inconsistency: the registry metadata states 'Required env vars: none' while SKILL.md documents multiple env vars the CLI can use (these are optional, but the metadata omission is misleading).
Instruction Scope
SKILL.md contains concrete CLI usage examples, flags, and a single optional config path (~/.summarize/config.json). It instructs the agent to run the summarize binary against URLs and local files (expected). It does not instruct broad system file reads beyond the optional config path, nor does it ask to exfiltrate data to unexpected endpoints. It does reference external services/APIs (LLM providers, Firecrawl, Apify) which is expected for this use case.
Install Mechanism
Install uses Homebrew with formula steipete/tap/summarize. Using brew is reasonable, but the formula comes from a third‑party tap rather than an official core tap. That increases the need to review the formula/source before installing because brew will download and install code from that tap.
Credentials
The skill documents multiple API keys for various LLM/cloud providers and optional crawl services. Those are proportionate to a summarization/transcription tool that can use different backends. However, the skill metadata did not declare these env vars as required, which is an inconsistency that could confuse non-technical users about what secrets they must provide.
Persistence & Privilege
The skill is not always-enabled and does not request elevated or persistent platform privileges. It uses an optional config file under the user's home directory (~/.summarize/config.json), which is appropriate for user-scoped configuration.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install content-summarizer - After installation, invoke the skill by name or use
/content-summarizer - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of content-summarizer v1.0.0:
- Adds a fast CLI for summarizing or extracting text from URLs, podcasts, local files, and YouTube videos.
- Supports best-effort transcription and summary of YouTube and video links.
- Integrates with multiple providers: OpenAI, Anthropic, xAI, and Google Gemini.
- Flexible API key setup and configuration via environment variables or config file.
- Includes helpful flags for summary length, output format, and extraction methods.
- Optional fallback services for blocked sites or enhanced extraction.
Metadata
Frequently Asked Questions
What is Summarize?
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”). It is an AI Agent Skill for Claude Code / OpenClaw, with 374 downloads so far.
How do I install Summarize?
Run "/install content-summarizer" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Summarize free?
Yes, Summarize is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Summarize support?
Summarize is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Summarize?
It is built and maintained by utromaya-code (@utromaya-code); the current version is v1.0.0.
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