Agent skill

URL

by axoviq-ai in axoviq-ai/synthadoc

“Fetch and extract text from web URLs”

— description from SKILL.md by axoviq-ai
AGPL-3.0-or-laterAuto-check passedKnowledge Management

Install URL

skills CLI
$ npx skills add axoviq-ai/synthadoc --skill url -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install axoviq-ai/synthadoc url --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .claude/skills && cp -r skills-src/synthadoc/skills/url .claude/skills/url && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
url
GitHub stars
1.6k
Token cost
~371 tokens
SKILL.md length
70 words
Files
4 (incl. scripts)
Skills in repo
9
Repo updated
First seen
Licence
AGPL-3.0-or-later

At a glance

  • SKILL.md covers Setup, Standalone usage and When this skill is used
  • Runs Python scripts from its folder; calls pip

About this skill

URL is a skill in axoviq-ai/synthadoc (1.6k stars). Its SKILL.md is about 371 tokens, with 3 other files in the folder (scripts). Licence: AGPL-3.0-or-later.

What it can do on your machine

Read from SKILL.md and the folder at commit 90d0db7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • pip

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

URL loads about 371 tokens when it runs. Until then it costs about 10 tokens; SKILL.md has 70 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~10
When it runs · the whole SKILL.md, loaded when a task matches
~371

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from axoviq-ai/synthadoc at commit 90d0db7, republished under its AGPL-3.0-or-later licence (© axoviq-ai). 70 words, ~371 tokens.

Download SKILL.mdSave it as .claude/skills/url/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
url
description
Fetch and extract text from web URLs
version
1.0
entry.script
scripts/main.py
entry.class
UrlSkill
triggers.extensions
https://, http://
triggers.intents
fetch url, web page, website
requires
httpx, beautifulsoup4
author
axoviq.com
license
AGPL-3.0-or-later

URL Skill

Fetches a web URL using httpx, strips navigation/script/style tags with BeautifulSoup, and returns clean body text. PDF URLs are extracted with pypdf (primary) and pdfminer.six (fallback).

Setup

bash
pip install httpx beautifulsoup4

# Optional — needed only if you ingest PDF URLs:
pip install pypdf pdfminer.six

Standalone usage

python
import asyncio
from synthadoc.skills.url.scripts.main import UrlSkill

skill = UrlSkill()

async def main():
    result = await skill.extract("https://example.com/article")
    print(result.text)          # clean body text
    print(result.metadata)      # {"url": "https://..."}

asyncio.run(main())

DomainBlockedException is raised when the site returns HTTP 401, 403, or 429. Catch it to log and skip the domain:

python
from synthadoc.skills.base import DomainBlockedException

try:
    result = await skill.extract(url)
except DomainBlockedException as e:
    print(f"Blocked: {e.domain} (HTTP {e.status_code})")

When this skill is used

  • Source starts with https:// or http://
  • User intent contains: fetch url, web page, website

© axoviq-ai, AGPL-3.0-or-later. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (scripts) in synthadoc/skills/url of axoviq-ai/synthadoc.

  • SKILL.md
  • requirements.txt
  • scripts/__init__.py
  • scripts/main.py

Open the folder on GitHubat commit 90d0db7

Compare with similar skills

URL next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

URL compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
URL this skillaxoviq-ai/synthadoc1.6k—~371Automated safety check: PassAGPL-3.0-or-later
Obsidian CLIAtmosphere/atmosphere3.8k13 repos~795Automated safety check: PassApache-2.0
Obsidian Canvas BoardsAgriciDaniel/claude-obsidian15k—~1.4kAutomated safety check: PassMIT
LLM Wikilewislulu/llm-wiki-skill655—~3.7kAutomated safety check: PassNone
Second BrainNicholasSpisak/second-brain737—~1.5kAutomated safety check: NotesNone
Codex History IngestAr9av/obsidian-wiki3.5k—~2.2kAutomated safety check: NotesMIT

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  • PPTX

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  • DOCX

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    Extract text from Microsoft Word documents. An agent skill from axoviq-ai/synthadoc.

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  • PDF

    axoviq-ai/synthadoc

    Extract text from PDF documents

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Works with

Questions about URL

How do I install URL in Claude Code?

Run `npx skills add axoviq-ai/synthadoc --skill url -a claude-code`. Or copy the skill folder (synthadoc/skills/url in axoviq-ai/synthadoc) into .claude/skills/url in your project. Claude Code loads it when a task matches its description.

How do I install URL in Codex?

Run `npx skills add axoviq-ai/synthadoc --skill url -a codex`. Or copy the skill folder (synthadoc/skills/url in axoviq-ai/synthadoc) into .agents/skills/url in your project. Codex loads it when a task matches its description.

Can I use URL in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add axoviq-ai/synthadoc --skill url -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/url, .gemini/skills/url, .github/skills/url and .opencode/skills/url in your project.

What does URL need to run?

Going by SKILL.md and its folder, URL needs Python for the scripts in its folder and the command-line tools its instructions call (pip).

Does URL access the network?

SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is URL safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does URL use?

URL is published under the AGPL-3.0-or-later licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does URL use?

About 371 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to URL?

Skills that share tags, products or a category with URL: Obsidian CLI (Atmosphere/atmosphere, 3.8k stars), Obsidian Canvas Boards (AgriciDaniel/claude-obsidian, 15k stars), LLM Wiki (lewislulu/llm-wiki-skill, 655 stars) and Second Brain (NicholasSpisak/second-brain, 737 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains URL?

axoviq-ai (a GitHub organization) maintains it in axoviq-ai/synthadoc, which has 1,578 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 10, 2026.

Source: axoviq-ai/synthadoc on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.