Browser Use
Browser agents and stealth cloud browsers for AI: run web tasks, fill forms, extract data.
作者による説明(英語の原文)
Web scraping MCP server — scrape, extract structured data, screenshot any site with anti-bot bypass.
この3つを1つのスコアにまとめることはしません。意見、測定、人気はそれぞれ別のものだからです。
このサーバーのやさしい解説はまだ書いていません。以下はレジストリから読み取った事実です。
使っているAIアプリを選んで、設定をコピーしてください。
必要なもの
どのアプリを使っていますか?
上でアプリを選んでください。選んだアプリを覚えておくので、次からはボタンに「…にインストール」と表示されます。
ウェブ、デスクトップ、モバイルのClaudeで使えます:
https://mcp.alterlab.io/mcpClaude Desktop → Settings → Developer → Edit Config を開き、claude_desktop_config.json にこれを貼り付けます
{
"mcpServers": {
"alterlab": {
"command": "npx",
"args": [
"-y",
"alterlab-mcp-server"
]
}
}
}ターミナルでこれを実行します
claude mcp add --transport http alterlab https://mcp.alterlab.io/mcpclaude mcp add alterlab -- npx -y alterlab-mcp-serverプロジェクトの .cursor/mcp.json、または ~/.cursor/mcp.json に貼り付けます
{
"mcpServers": {
"alterlab": {
"url": "https://mcp.alterlab.io/mcp"
}
}
}プロジェクトの .cursor/mcp.json、または ~/.cursor/mcp.json に貼り付けます
{
"mcpServers": {
"alterlab": {
"command": "npx",
"args": [
"-y",
"alterlab-mcp-server"
]
}
}
}ブラウザがアプリを開いてよいか確認し、そのあとアプリが設定を表示して確認を求めます。キーの値は空欄のままなので、自分で入力してください。
プロジェクトの .vscode/mcp.json に貼り付けます
{
"servers": {
"alterlab": {
"type": "http",
"url": "https://mcp.alterlab.io/mcp"
}
}
}プロジェクトの .vscode/mcp.json に貼り付けます
{
"servers": {
"alterlab": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"alterlab-mcp-server"
]
}
}
}ブラウザがアプリを開いてよいか確認し、そのあとアプリが設定を表示して確認を求めます。キーの値は空欄のままなので、自分で入力してください。
ChatGPTがつなげるのは、インターネット上のサーバーだけです:
https://mcp.alterlab.io/mcpメニューの名前は、プランや時期によって少し違うことがあります。
選んだアプリは、この端末のCookieに保存されます。アカウントは不要です。
この設定は、作者のレジストリ登録情報から作成しています。READMEと違う場合は、READMEに従ってください。
ツールの名前と説明は、サーバーが2026年11月6日に返したそのままの内容です。書いたのは作者で、私たちではありません。プレーンテキストとして表示しています。
alterlab_scrapeFetch one URL and return its content as clean markdown, text, HTML, or JSON. Use when a normal fetch returns 403/429, a bot-protection challenge page, a CAPTCHA, or an empty JavaScript shell. Website challenges and JavaScript-heavy pages are handled automatically by a 5-tier syst
alterlab_extractExtract structured data (prices, product info, contact details, custom fields) as JSON from HTML, text or markdown you already hold. Use when you have content and need specific fields. Does not fetch a URL: to fetch and extract in one step, use alterlab_scrape with extraction_sch
alterlab_screenshotCapture a full-page PNG screenshot of one URL, an image rather than text content. Use when a normal fetch returns 403/429, a bot-protection challenge page, a CAPTCHA, or an empty JavaScript shell. Works on anti-bot-protected sites, rendered in a real headless browser. Use wait_fo
alterlab_crawlCrawl a whole website and return the content of every page, for RAG, indexing or site-wide export. Use when you need many pages from one domain; for one URL use alterlab_scrape, for a URL list only use alterlab_map. Works on JavaScript-heavy and protected sites, with anti-bot han
alterlab_searchSearch the web and get structured results (URLs, titles, snippets). Use when you have a question or topic but no URL yet; follow up with alterlab_scrape to read a page, or set scrape_results=true to read every result in one call. Use domain to restrict to one site and time_range
alterlab_mapList every URL on a site via sitemap parsing and link extraction, without fetching page content. Use before alterlab_crawl or alterlab_batch to choose pages; to read the content itself use alterlab_crawl. Works on JavaScript-heavy and protected sites. When you present results to
alterlab_batch_scrapeScrape 2-20 URLs in parallel and get every result back in one synchronous call, no polling required. Use when a normal fetch returns 403/429, a bot-protection challenge page, a CAPTCHA, or an empty JavaScript shell. Failed URLs report their error; successful ones return content.
alterlab_batchStart an asynchronous batch job for a large URL set (up to 100 per call) and poll for results later. Use when a normal fetch returns 403/429, a bot-protection challenge page, a CAPTCHA, or an empty JavaScript shell. Each URL can have its own mode, formats and extraction_schema. R
alterlab_estimate_costEstimate the credit cost of scraping a URL before you run it. Use when cost matters or before a large job; no credits are charged. Returns the predicted tier, estimated cost and confidence. Full machine-readable price list: GET https://alterlab.io/api/v1/pricing (public, no auth)
alterlab_pricingGet AlterLab's machine-readable price list: per-tier cost, bring-your-own-proxy discount, cache-hit discount, add-ons, search and SERP prices, and the free allowance. Use when deciding whether AlterLab fits a budget, before any account exists. Free and keyless; nothing is scraped
alterlab_newsSearch aggregated news headlines from curated public sources: headline, URL, source, published time, author, image, short snippet and category. Use to find what is being reported on a topic. Served from a cache that refreshes about every 15 minutes, so a call never triggers a fet
alterlab_keyword_ideasFan out a seed keyword across autocomplete (seed + a-z + who/what/how/why/best/vs), People Also Ask and related searches, and get deduplicated ideas, each with source, question flag, intent (question, commercial, navigational, informational) and a 0-1 relevance score. volume is a
alterlab_ai_visibilityRun prompts against AI answer engines through their public, logged-out interfaces and get, per engine and run, the answer text, whether the brand is mentioned and its position, competitors mentioned, cited URLs and domains and a sentiment label, plus per-prompt mention rate, shar
alterlab_feedbackTell AlterLab when something is hard, or what would make it better. Call this when something blocks you, a result is wrong, or a step is confusing, slow or priced unexpectedly, and also to send a suggestion (category `suggestion`, ideas welcome even when nothing is broken). Descr
alterlab_support_ticketOpen a support ticket in your user's AlterLab account when they need a human: a billing, account or data problem. Do not use it for scrape friction, blocks or ideas; use `alterlab_feedback` for those. Ask the user first: a ticket reaches a human and emails them. Requires an API k
alterlab_create_accountCreate an AlterLab account and API key for your user. Use only when no ALTERLAB_API_KEY exists yet; skip it if a key is already configured. Signup is on behalf of your user (agent signup with human approval). Nothing is created until the human approves: they get an email (and you
alterlab_create_api_keyCreate one scoped, spend-capped API key (ALTERLAB_API_KEY) for the SDK and REST API on this machine. Works only when the user ticked "Also create an API key for this machine" on the OAuth approval screen, so no second approval is needed. Skip it if a key is already configured. Th
search_alterlabUse this to look up how to do something with AlterLab (API parameters, SDKs, MCP setup, pricing, error codes, migration from Firecrawl/ScrapingBee/Apify) or to find a guide for scraping a specific site. Searches the docs guides and API reference by default (blog posts only when y
read_alterlab_pageUse this after search_alterlab to read the full text of one AlterLab page as markdown, so you can follow the documented steps instead of guessing. Pass the url of a search result. Only pages on alterlab.io that search_alterlab can return are readable. Free: needs no API key and n
alterlab_serpQuery a search engine and get structured results: organic listings, ads and related data, from Google, Bing or DuckDuckGo. Use action=search (default) to run a query, or action=history to read earlier SERP queries for your account. Prefer alterlab_search when you also want each r
alterlab_jobLook up a job by id. action=status (default) returns its status and result once finished; set wait (seconds) to hold the request until the job reaches a terminal status. action=explain returns the ordered per-stage timing breakdown, useful when a job was slow or failed. Job ids c
alterlab_balanceRead account credit data. action=balance (default) returns the current credit balance in microcents (1,000,000 microcents = $1.00) with formatted values. action=usage returns usage statistics. Read-only; call it before an expensive crawl or batch to confirm there are enough credi
alterlab_monitorManage change monitors. action=create watches a URL on a cron schedule and notifies by webhook when content changes; action=list returns your monitors; action=delete removes one by monitor_id (it stops running and cannot be restored). Each check spends credits like a scrape.
alterlab_scheduleManage recurring scrape schedules. action=create runs a scrape of one or more URLs on a cron expression; action=list returns your schedules; action=delete removes one by schedule_id (it stops triggering). Every run spends credits like a scrape; minimum intervals depend on your ba
alterlab_workflow_runStart an execution of a workflow you saved in the AlterLab dashboard. Optional input_data is passed to the workflow's webhook trigger node. Returns run_id, workflow_id and the initial status. The run spends credits for the steps it executes.
誰でも見られる情報をチェックしており、コードは読んでいません。当てはまらない項目は数に入れていません。 · 2026年11月6日にチェック
レジストリ名はドメイン alterlab.io で確認済みです(レジストリがドメインの所有を確認しています)
このリポジトリはまだGitHubから読み取っていません
このリポジトリはまだGitHubから読み取っていません
492ミリ秒で応答(HTTP 200)
サインイン不要
25件のツールの説明を読み、AIへの隠れた指示は見つかりませんでした
レジストリでこのカテゴリにある有効なすべてのサーバーと比較しています。スターは、公開者がリポジトリの所有者である場合だけ数えます。
当てはまる基本チェック3項目のうち3項目に合格しました。コードは読んでいません。キーやトークンを追加する前に、サーバーがどんなアクセスを求めているかを確認し、必要な権限だけを持つキーを使ってください。
レジストリには必須のキーは載っていません。ただし、最初に使うときにサインインを求めるサーバーもあります。
どちらでも使えます。パソコンにインストールしても、クラウド版につないでもかまいません。
GitHubリポジトリの最終更新は–、最新バージョン(1.12.11)がレジストリに届いたのは今日です。
Claude Desktop、Claude Code、Cursor、VS CodeなどのMCP対応アプリで使えます。URLでつながるので、リモートMCPサーバーに対応したアプリ(開発者モードのChatGPTなど)でも使えます。
同じカテゴリには:Browser Use, Chrome DevTools MCP, MCP Server Browser
同じカテゴリで、ほかの作者が作ったサーバー。スターの多い順。
カードの見方:★ GitHubスターi3つの柱:レビュー · チェック · 利用状況i更新=最新バージョンをレジストリに公開した日i
Browser agents and stealth cloud browsers for AI: run web tasks, fill forms, extract data.
MCP server for Chrome DevTools
MCP server for browser use access
作者のリポジトリから書かれたとおりにコピーしたものです。PopNx MCPは内容を確認・推奨していません。HTML、画像、スクリプトは取り除いています。リンクはこのサイトの外へ移動します。
AlterLab MCP Server
Give Claude, Cursor, and Windsurf the ability to scrape any website, extract structured data, and take screenshots — with automatic anti-bot bypass.
Get Started Free → $1 free balance on signup — up to 5,000 scrapes.
claude mcp add alterlab -- npx -y alterlab-mcp-server@latest
Then set your API key: export ALTERLAB_API_KEY=sk_live_... or add it to .claude.json (see full setup below).
# Add to .cursor/mcp.json — see full config below
npx -y @smithery/cli install alterlab-mcp-server --client claude
Claude's built-in WebFetch tool and open-source browser MCP servers fail on most real-world websites. They cannot bypass Cloudflare, render JavaScript SPAs, or extract structured data.
AlterLab replaces broken fetch tools with one MCP server that actually works:
| Capability | WebFetch / fetch() | Browser MCP | AlterLab MCP |
|---|---|---|---|
| Anti-bot bypass (Cloudflare, DataDome, Akamai) | No | Partial | Yes — automatic |
| JavaScript rendering (React, Angular, Vue SPAs) | No | Yes (slow) | Yes — headless Chromium |
| Structured data extraction (JSON, Schema.org) | No | No | Yes — built-in profiles |
| Smart tier escalation (cheapest method first) | N/A | N/A | Yes — saves 60-80% |
| Residential proxy rotation (195+ countries) | No | No | Yes |
| Screenshot and PDF capture | No | Screenshot only | Yes — both |
| OCR text extraction from images | No | No | Yes |
| Cost per request | Free (but fails) | Free (but slow) | From $0.0002 |
AlterLab uses a multi-tier scraping architecture. It automatically selects the cheapest method capable of fetching each URL:
Auto mode starts at Tier 1 and escalates only when blocked. Most websites resolve at Tiers 1-2, so $1 gets you 1,000 to 5,000 scrapes depending on the sites you target.
Add to your Claude config file (~/.claude.json for Claude Code, or Settings for Claude Desktop):
{
"mcpServers": { "alterlab": { "command": "npx", "args": ["-y", "alterlab-mcp-server@latest"], "env": { "ALTERLAB_API_KEY": "sk_live_your_key_here" } } } }
Add to .cursor/mcp.json in your project root:
{
"mcpServers": { "alterlab": { "command": "npx", "args": ["-y", "alterlab-mcp-server@latest"], "env": { "ALTERLAB_API_KEY": "sk_live_your_key_here" } } } }
Add to Windsurf MCP settings (~/.codeium/windsurf/mcp_config.json):
{
"mcpServers": { "alterlab": { "command": "npx", "args": ["-y", "alterlab-mcp-server@latest"], "env": { "ALTERLAB_API_KEY": "sk_live_your_key_here" } } } }
npx -y @smithery/cli install alterlab-mcp-server --client claude
ALTERLAB_API_KEY field in your MCP configalterlab_scrape — Scrape Any WebpageScrape a URL and return its content as markdown, text, HTML, or JSON. Automatically handles anti-bot protection with tier escalation. Returns markdown by default — optimized for LLM context windows.
"Scrape https://www.amazon.com/dp/B0BSHF7WHW and summarize the product"
| Parameter | Type | Default | Description | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
url | string | required | URL to scrape | |||||||
mode | auto \ | html \ | js \ | pdf \ | ocr | auto | Scraping mode | |||
method / body / content_type / headers | enum / string / enum / object | GET | POST support (1.5x cost) and custom target headers | |||||||
formats | `(text\ | json\ | json_v2\ | html\ | markdown\ | rag\ | content\ | raw)[]` | ["markdown"] | Output formats |
extraction_schema / extraction_prompt | object / string | — | LLM extraction (+$0.001) | |||||||
extraction_profile / extraction_template | enum | — | auto, product, article, job_posting, faq, recipe, event, ecommerce_homepage, directory_listing (template is a deprecated alias) | |||||||
extraction_provider / extraction_model | enum / string | — | BYOK LLM selection | |||||||
evidence, promote_schema_org, filter_content | boolean | — | Extraction behaviour | |||||||
cache, cache_ttl, force_refresh | boolean / number / boolean | — | Response caching (cache_ttl 60-86400) | |||||||
render_js | boolean \ | "auto" | API default | Headless browser (forces Browser tier, $0.004) | ||||||
use_proxy, proxy_country | boolean, string | — | Premium proxy (+$0.0002) and geo-targeting | |||||||
use_own_proxy, use_system_proxy, proxy_integration_id | boolean, boolean, string | — | Bring-your-own-proxy selection | |||||||
skip_tls_verification | boolean | — | Omit (recommended) = verify, fall back on invalid certs; true skip, false require valid cert | |||||||
wait_for, wait_until, wait_condition | string | — | Selector / load-event waits | |||||||
actions | object[] (max 20) | — | Browser actions: wait, wait_for, click, fill, press, scroll, infinite_scroll, screenshot, evaluate | |||||||
screenshot, generate_pdf, ocr | boolean | — | Add-ons (+$0.0002 / +$0.0004 / +$0.001) | |||||||
scroll_to_load, scroll_count, enable_scroll | boolean / 1-10 / boolean | — | Lazy-load handling | |||||||
include_iframes, flatten_shadow_dom, block_images, remove_cookie_banners | boolean | — | Rendering options | |||||||
section_filter | object | — | Filter for json_v2 sections | |||||||
session_id, cookies, session_headers | UUID, object, object | — | Authenticated scraping | |||||||
sticky_session, sticky_session_ttl | string, 300-7200 | — | Reuse cookies and exit IP across calls (paid plans) | |||||||
location | {country, language} | — | Geo-targeting | |||||||
cost_controls | object | — | force_tier, max_tier, max_credits, prefer_cost, prefer_speed, fail_fast, time_budget (prefer_cost, prefer_speed, fail_fast also accepted at top level) | |||||||
embeddings | object | — | enabled, model, chunk_size, chunk_overlap (+$0.001/page) | |||||||
sync_policy | auto \ | wait_until_deadline | auto | Wait behaviour for long scrapes | ||||||
timeout, max_response_bytes, include_raw_html | number, number, boolean | 90, 5 MB, false | Limits and raw output | |||||||
estimate_first | boolean | false | Run a free cost estimate first |
Not exposed: source (dashboard tracking tag), sync (the tool is always synchronous), webhook_url (use alterlab_batch/alterlab_crawl webhooks). If a scrape outlives the ~85s synchronous window the tool returns a job_id; fetch it with alterlab_get_job.
alterlab_extract — Extract Structured DataExtract structured fields from HTML, text or markdown content using pre-built profiles or custom JSON Schema. Returns clean JSON — ready for databases, spreadsheets, or downstream processing.
"Extract the product name, price, and rating from this Amazon page"
| Parameter | Type | Default | Description | ||
|---|---|---|---|---|---|
content | string (max 500,000) | required | HTML, text or markdown you already have (this tool does not fetch a URL) | ||
content_type | html \ | text \ | markdown | html | Type of content |
extraction_profile / extraction_template | enum | — | Profile: auto, product, article, job_posting, faq, recipe, event, ecommerce_homepage, directory_listing | ||
extraction_schema | object | — | Custom JSON Schema for structured output | ||
extraction_prompt | string | — | Natural language extraction instructions | ||
extraction_provider / extraction_model | enum / string | — | BYOK LLM selection | ||
formats | enum[] | ["json"] | Output formats | ||
source_url, evidence | string, boolean | — | Context URL and provenance | ||
cache, cache_ttl | auto \ | skip \ | only, number | auto | Extraction result cache |
To scrape and extract in one step, use alterlab_scrape with extraction_schema.
Extraction profiles:
alterlab_screenshot — Screenshot Any PageTake a full-page screenshot of any URL. Returns a PNG image directly in the conversation — no URLs to copy, no files to download.
"Take a screenshot of our landing page at https://alterlab.io"
| Parameter | Type | Default | Description |
|---|---|---|---|
url | string | required | URL to screenshot |
wait_for | string | — | CSS selector to wait for before capture |
wait_until | enum | networkidle | networkidle, domcontentloaded, or load |
timeout | number | 90 | Timeout in seconds (1-300) |
use_proxy, proxy_country | boolean, string | — | Premium proxy and geo-targeting |
session_id, cookies | UUID, object | — | Screenshot pages behind a login |
location | {country, language} | — | Geo-targeting |
alterlab_estimate_cost — Estimate Before You ScrapeCheck how much a scrape will cost before running it. Returns the predicted tier, cost per request, and confidence level.
"How much would it cost to scrape linkedin.com?"
| Parameter | Type | Default | Description | |
|---|---|---|---|---|
url | string | required | URL to estimate | |
mode | enum | auto | Scraping mode | |
method | GET \ | POST | GET | POST costs 1.5x |
render_js | boolean \ | "auto" | false | Include JS rendering cost |
use_proxy, use_own_proxy | boolean | false | Include proxy cost / BYOP discount |
| `screen
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