SEO Skill

Free SpyFu alternative

SpyFu is a hosted competitor research suite for Google Ads and SEO that shows the keywords your competitors buy and rank for, their ad history, backlinks and rankings. SEO Skill is free: web tools for the everyday lookups, and your own Search Console, Google Analytics and keyword data in your AI agent.

Get started free

Run it in a terminal, then sign in with Google.

Or run it on your machine

Installs the CLI, signs you in and adds the skill to your agents. Site crawls and Bing data run this way, on your own machine. A crawl fetches many pages, and Bing blocks our hosted server.

At a glance

The four things most people compare first, from each product's own pages.

SEO Skill

Free use
Every on-demand tool, no usage cap
Paid
$50 a month per site, for the weekly audit
Works in web chat
Yes
Get started
Free web tools with no account, or one URL in your AI agent

SpyFu

Free use
Free version
Paid
$39 a month (Basic)
Works in web chat
ChatGPT only, through a custom GPT. No MCP server or Claude connector stated.
Get started
Create an account

Free tools for the jobs you use SpyFu for

No account and no key. Each one opens in your browser.

Pick SpyFu if

From SpyFu's own pages.

  • You run Google Ads as well as SEO and want the keywords and ad tests your competitors have run for years.

  • You want unlimited searches and exports for a flat monthly price on Pro + AI and Team/Agency.

  • You want an AI site audit that publishes approved title and meta fixes to your site through a snippet, with rollback.

  • You want SpyFu data inside ChatGPT through its custom GPT at no extra charge.

Pick SEO Skill if

Free SEO tools in your browser, and your own search data in your AI agent.

  • You want the everyday lookups for free: backlinks, Domain Rating, competitor keywords, SERPs and traffic estimates, with no account.

  • You want your AI agent to answer from your own Search Console and Google Analytics data, not only from an index estimate.

  • You already pay for keyword data: SEO Skill uses your own DataForSEO or Ahrefs key, so you pay that provider and nothing on top.

  • You want a weekly crawl, daily index checks and drop alerts for $50 a month per site, with no seats to buy.

Side by side

Every fact we compared, with SpyFu's taken from the sources at the end of this page.

Get started

SEO Skill: Use the free web tools with no account. For your own data, add https://seoskill.dev/mcp to your AI agent and sign in with Google (read only).

SpyFu: No account needed to start: type a keyword or competitor into the search bar to use the free version. Share an email address to keep searching with no time limit. Paid plans are bought from the pricing page and come with a 30-day money back guarantee. There is no free trial with an end date.

What it does

SEO Skill: Free web tools: backlink checker, Domain Rating, competitor keywords, SERP checker, traffic estimates, robots.txt, sitemap, schema and more. In your AI agent: Search Console reports (quick wins, low CTR, striking distance, content decay, cannibalization, traffic drops), page checks, index checks, before and after comparisons, and keyword research with your own key. A site crawler and internal links in the CLI.

SpyFu: PPC competitor research and ad history, SEO competitor keywords, Kombat keyword gap, keyword research, backlinks by keyword, SERP analysis, ranking history, weekly rank tracking, an AI site audit, RivalFlow content suggestions, AI brand monitoring, sales leads and white-labeled reports. No MCP server stated. SpyFu GPT, a custom GPT in ChatGPT, reads SpyFu data through its API at no extra charge; the pricing table limits Basic to 3 chats and makes it unlimited on Pro + AI and Team/Agency. The REST API comes with Pro + AI ($40 monthly API credit) and Team/Agency ($100 monthly API credit), then pay as you go per 1,000 rows.

Data

SEO Skill: Google Search Console, Google Analytics, URL Inspection, Clicky, and DataForSEO or Ahrefs with your own key. Bing Webmaster Tools in the CLI. Free Domain Rating by Ahrefs on research rows.

SpyFu: SpyFu's own index: 7.2 trillion search results, 13.1 billion keywords and 152 million websites, per its homepage, Competitors' Google Ads keywords and ad history, Organic ranking history, Keyword metrics from Google Keyword Planner, Google Search Console (GSC Integration on every plan, Performance Tracking with GSC on Pro + AI and up)

Where you use it

SEO Skill: Your browser for the web tools. Claude Code, Claude, ChatGPT, Codex, Cursor, VS Code, Gemini CLI, Windsurf, Le Chat and any remote MCP client for your own data.

SpyFu: SpyFu web app, ChatGPT (SpyFu Keyword Research GPT)

In Claude or ChatGPT on the web

SEO Skill: Yes

SpyFu: ChatGPT only, through a custom GPT. No MCP server or Claude connector stated.

Free

SEO Skill: Every on-demand tool, with no usage cap and no time limit.

SpyFu: Free version with no time limit. Results are cut short, and full results, keyword tracking and a custom search database need a paid plan. Sharing an email address lets you search as often as you want. Exact free limits are not stated. No free trial. Paid plans have a 30-day money back guarantee.

Paid plans

SEO Skill: The weekly site audit is $50 a month per site: weekly crawl, daily Google index checks, stored history, drop and return alerts, and a Monday email and webhook. Cancel any time.

SpyFu: Basic $39 a month, or $29 a month billed annually (10k row results and exports, 5k weekly tracked keywords, 1 user, no API). Pro + AI $59 for the first month then $119 a month, or $89 a month billed annually (unlimited results and exports, 15k tracked keywords, API with $40 monthly credit, 1 user). Team/Agency $249 a month, or $187 a month billed annually (unlimited results and exports, 50k tracked keywords, API with $100 monthly credit, 5 users). Extra users $15 a month on Basic and $30 on the other plans. Paying annually saves 25%. Prices in USD.

Can it change your site

SEO Skill: Read-only Google sign-in. Your agent can start the paid audit for a site, which returns a Stripe Checkout link for you to open.

SpyFu: Its Site Audit can change your live site. After you install a JavaScript snippet (directly or through Google Tag Manager), fixes you approve, such as titles, meta descriptions, H1s and social tags, are applied to your pages through that snippet and can be rolled back. Nothing is published without your approval. No Google Search Console write actions stated.

Your data

SEO Skill: Search Console and analytics rows are fetched on each request and never stored, except what the paid weekly audit keeps for its sites. Your linked accounts and saved keys are kept, encrypted.

SpyFu: Not stated. The pricing page lists a GSC Integration but does not say what Search Console data it stores.

History

SEO Skill: Google's 16 months, read live. With the weekly audit, crawl and index history for the sites you audit.

SpyFu: 10+ years of historical data on every plan, per the pricing page. Organic ranking history and 10+ years of ad history are on Pro + AI and Team/Agency, not Basic. Its homepage says 18+ years of historical data.

Licence

SEO Skill: Hosted service, with the CLI and local MCP server open source (Apache 2.0)

SpyFu: Hosted service

Move from SpyFu in a few minutes

Nothing to migrate: SEO Skill reads your accounts live. When you are done, remove SpyFu from your agent and revoke its access.

More comparisons

Other ways to give your agent search data, next to SEO Skill.

Questions about SpyFu

Sources for SpyFu, read 3 November 2026: Product, index size, 18+ years of history, ad history, Keyword Planner metrics, Plans, prices, seats, GSC integration, API credits, 30-day money back guarantee, Free version with no time limit, no free trial, SpyFu GPT in ChatGPT, no extra charge, API plans, monthly credits, per-row pricing, Site Audit Auto Fix through a JavaScript snippet, approval and rollback.