Agent skill

Web Scraper

by sandbaseai in sandbaseai/sandbase-skills

Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase.

Apache-2.0Auto-check passedData & Analytics

Install Web Scraper

skills CLI
$ npx skills add sandbaseai/sandbase-skills --skill web-scraper -a claude-code

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

GitHub CLI
$ gh skill install sandbaseai/sandbase-skills web-scraper --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/sandbaseai/sandbase-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/research/web-scraper .claude/skills/web-scraper && 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
web-scraper
GitHub stars
201
Token cost
~746 tokens
SKILL.md length
326 words
Files
2 (incl. references)
Skills in repo
22
Repo updated
First seen
Licence
Apache-2.0

At a glance

Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase.

  • Works in 4 steps: Single page extraction → Site crawling → Structured data extraction → …
  • Asked to extract content from URLs
  • SKILL.md covers Call SandBase capabilities, Operating principles, Workflow and Output, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Web Scraper is an agent skill from sandbaseai/sandbase-skills. Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase. Use when asked to extract content from URLs, crawl websites, get structured data from pages, take screenshots, or convert web pages to markdown.

Its SKILL.md is about 750 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/sandbase-api-map.md`).

It sits in Data & Analytics, covering Web scraping and Schema markup. It works with Firecrawl. The repository describes itself as: 88 installable open-source Agent Skills for research, social intelligence, marketing, and business workflows—compatible with Codex, Claude Code, Cursor, Gemini CLI, and DeepSeek… The licence is Apache-2.0.

When your agent uses it

  • Asked to extract content from URLs
  • Get structured data from pages
  • Take screenshots
  • Convert web pages to markdown

Example prompts

  • “/web-scraper”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Single page extraction
  2. Site crawling
  3. Structured data extraction
  4. Visual and metadata

What it can do on your machine

Read from SKILL.md and the folder at commit cbab581. 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

    No scripts in the folder and no shell commands in SKILL.md.

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

  • Network

    No URLs in SKILL.md.

    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

Web Scraper loads about 746 tokens when it runs, and up to ~1.2k if it reads all its reference files. Until then it costs about 64 tokens; SKILL.md has 326 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~64
When it runs · the whole SKILL.md, loaded when a task matches
~746
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.2k

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); files beside SKILL.md are not scanned.

SKILL.md

The full file from sandbaseai/sandbase-skills at commit cbab581, republished under its Apache-2.0 licence (© sandbaseai). 326 words, ~746 tokens.

Download SKILL.mdSave it as .claude/skills/web-scraper/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
web-scraper
description
Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase. Use when asked to extract content from URLs, crawl websites, get structured data from pages, take screenshots, or convert web pages to markdown.

Web Scraper

Universal web scraping and data extraction through SandBase. Scrape individual pages, crawl entire sites, extract structured data, and capture visual snapshots. Read the API map before selecting a capability.

Call SandBase capabilities

Use the capability identifiers below as discovery hints, not MCP tool names. Find the matching endpoint with sandbase_discover(q: "<provider and capability>"); use its returned name in sandbase_inspect(name: "<returned name>"). Read inputSchema, pricing, and execute_as, then call sandbase_run using execute_as.arguments.name and schema-defined arguments. If a run_id is returned, poll sandbase_run_get(run_id: "<returned run_id>") within the task budget until completed or failed; report pending or failed runs without resubmitting them automatically.

Operating principles

  • Respect robots.txt and rate limits — these tools handle that automatically.
  • Use the lightest tool for the job: markdown scrape before full crawl.
  • Structured data extraction is best for product pages, directories, and lists.
  • Screenshots are useful for visual verification and design research.

Workflow

1. Single page extraction

Use context_dev_scrape_markdown for clean Markdown output (best for articles, docs). Use context_dev_scrape_html for raw HTML (best for structure analysis). Use firecrawl_scrape for advanced single-page extraction with options.

2. Site crawling

Use firecrawl_crawl to crawl multiple pages following links. Use firecrawl_map to discover all URLs on a site. Use context_dev_crawl_site for site-wide content extraction. Use context_dev_crawl_sitemap for sitemap-based crawling.

3. Structured data extraction

Use context_dev_extract_structured_data for custom schema extraction from pages. Use context_dev_extract_product for single product data. Use context_dev_extract_products for product listing pages.

4. Visual and metadata

Use context_dev_capture_screenshot for visual page snapshots. Use context_dev_scrape_images for image extraction. Use context_dev_scrape_fonts for typography analysis. Use context_dev_retrieve_brand for brand asset extraction.

Output

Return: extracted content in requested format, structured data as JSON, screenshot URLs, or crawl results with page list.

Example tasks

  • "Extract the content from this article as clean Markdown: [URL]."
  • "Crawl [website] and list all their product pages."
  • "Extract product name, price, and description from this page: [URL]."
  • "Take a screenshot of [URL] at desktop resolution."
  • "Map all pages on [website] and categorize by content type."

© sandbaseai, Apache-2.0. 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 1 other file (references) in research/web-scraper of sandbaseai/sandbase-skills.

  • SKILL.md
  • references/sandbase-api-map.md

Open the folder on GitHubat commit cbab581

Compare with similar skills

Web Scraper 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.

Web Scraper compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Web Scraper this skillsandbaseai/sandbase-skills201—~746Automated safety check: PassApache-2.0
SEO Firecrawlseranking/seo-skills160—~2.3kAutomated safety check: PassMIT
Firecrawl Agentfirecrawl/skills115—~1.2kAutomated safety check: PassISC
Firecrawl Alexandriafirecrawl/skills115—~1.6kAutomated safety check: PassISC
Axyusukebe/ax7191 repos~918Automated safety check: PassMIT
Meowhub Browserzhaojiaqi/MeowHub111—~1.6kAutomated safety check: PassGPL-3.0

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Works with

Questions about Web Scraper

What does Web Scraper do?

Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase. Web Scraper is an agent skill from sandbaseai/sandbase-skills. Scrape web pages, crawl sites, extract structured data, and capture screenshots through SandBase.

When should I use Web Scraper?

Web Scraper fits situations like: asked to extract content from URLs; get structured data from pages; take screenshots; convert web pages to markdown.

How do I install Web Scraper in Claude Code?

Run `npx skills add sandbaseai/sandbase-skills --skill web-scraper -a claude-code`. Or copy the skill folder (research/web-scraper in sandbaseai/sandbase-skills) into .claude/skills/web-scraper in your project. Claude Code loads it when a task matches its description.

How do I install Web Scraper in Codex?

Run `npx skills add sandbaseai/sandbase-skills --skill web-scraper -a codex`. Or copy the skill folder (research/web-scraper in sandbaseai/sandbase-skills) into .agents/skills/web-scraper in your project. Codex loads it when a task matches its description.

Can I use Web Scraper 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 sandbaseai/sandbase-skills --skill web-scraper -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/web-scraper, .gemini/skills/web-scraper, .github/skills/web-scraper and .opencode/skills/web-scraper in your project.

What does Web Scraper need to run?

SKILL.md names no scripts, command-line tools or credentials: Web Scraper is instructions for the agent only.

Does Web Scraper access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Web Scraper 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. Review the folder before installing.

What licence does Web Scraper use?

Web Scraper is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Web Scraper use?

About 746 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 450 tokens, read only when the agent opens those files.

What are the alternatives to Web Scraper?

Skills that share tags, products or a category with Web Scraper: SEO Firecrawl (seranking/seo-skills, 160 stars), Firecrawl Agent (firecrawl/skills, 115 stars), Firecrawl Alexandria (firecrawl/skills, 115 stars) and Ax (yusukebe/ax, 719 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Web Scraper?

sandbaseai (a GitHub organization) maintains it in sandbaseai/sandbase-skills, which has 201 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on September 26, 2026.

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