Dedicated SEO agent
1. Frase — Best for end-to-end SEO content workflows
Frase describes itself as running SEO and AI search end to end: it audits your pages, finds opportunities, drafts content and can publish it.
- Audits a site page by page, scores each page for search and AI answers, and drafts fixes for you to approve.
- Builds an opportunity report from your search data, competitors and existing pages, ranked by likely payoff.
- Publishes to WordPress, Webflow, Sanity or Wix, or to its own FraseCMS. Its agent publishes on its own only when you allow it.
- Offers an MCP server and CLI so you can run it from Claude, ChatGPT, Codex or Cursor.
Main limitation: It is built around content and AI-search visibility. It doesn’t replace a backlink index or a dedicated technical SEO crawler for large sites.
Choose it if: You want SEO content research, drafting and supported publishing workflows in one tool, with configurable approval steps.
Source: Frase website
Dedicated SEO agent
2. Nightwatch — Best for rank tracking and SEO research agents
Nightwatch is a rank tracker with an SEO AI agent that its site says automates research, technical audits, SEO tasks, site changes and rank tracking.
- Tracks rankings daily in any location or language, plus AI answers for the prompts you choose.
- Includes keyword research, a site audit, Content Studio and a search simulator on every plan.
- The SEO Agent spends credits each time it runs a task, with a monthly credit allowance per plan.
- Includes an SEO MCP for use from other AI tools.
Main limitation: Agent work is metered by credits, and plans scale with how many keywords you track rather than team size.
Choose it if: Teams whose SEO work centres on rankings, keyword research and recurring audits.
Source: Nightwatch website
SEO automation agent
3. OTTO SEO by Search Atlas — Best for implementing on-page and technical changes
Search Atlas describes OTTO SEO as an AI agent that scans your site and deploys optimisations, rather than only recommending them.
- Finds and fixes issues such as page titles, meta descriptions, headings, schema, internal links and FAQ content.
- Ships changes through Cloudflare, your CMS or your code pipeline, according to Search Atlas.
- Lets you review, approve or roll back changes.
- Requires adding OTTO to your site; Search Atlas also sells implementation services.
Main limitation: Because it changes your live site, it needs installation and careful review. Check which deployment method your site supports before relying on automatic changes.
Choose it if: Site owners and agencies that want SEO fixes applied, not just listed.
Source: OTTO SEO by Search Atlas website
AI-enabled SEO platform
4. Surfer — Best for creating and refreshing search-focused content
Surfer positions itself as an AI search visibility platform that helps you plan, write, optimise and track content for Google and AI answers.
- Analyses what AI models say about your brand and where competitors are preferred.
- Audits existing content and gives a prioritised list of fixes.
- Creates or optimises documents, with one-click optimisation and, on higher plans, one-click internal linking.
- Offers content ideas, coverage-gap and cannibalisation reports, plus MCP access.
Main limitation: It is a content platform with AI features. Don’t expect it to run your whole SEO stack or work across other tools on its own.
Choose it if: Writers and content teams that publish and refresh search-focused articles.
Source: Surfer website
AI-enabled SEO platform
5. Ahrefs — Best for search, backlink and AI-visibility research
Ahrefs is a search and marketing data platform with a large web index, backlink data and tools for tracking brand visibility in AI answers.
- Site Explorer shows a site’s backlink profile and how competitors are discovered across search, AI, links and ads.
- Brand Radar tracks your brand’s visibility across AI answers, YouTube and Reddit, including custom prompts.
- Enterprise plans add API access and a way to connect ChatGPT, Claude or Copilot to Ahrefs data.
Main limitation: Its AI features sit inside a research platform; Ahrefs doesn’t present itself as one agent that runs your SEO across every function.
Choose it if: SEOs who need deep backlink, keyword and competitor data.
Source: Ahrefs website
AI-enabled SEO platform
6. Semrush — Best for multi-tool SEO research and monitoring
Semrush is a suite of toolkits covering keyword research, competitor analysis, technical audits, rank tracking and AI visibility.
- Keyword research, competitor analysis and backlink analysis.
- Technical site audit for issues that hurt search and AI visibility.
- AI Visibility Toolkit for how brands appear in ChatGPT, Perplexity, Gemini, Claude and AI Overviews.
- Marketing reports with scheduled delivery, plus content creation tools.
Main limitation: Features are split across toolkits. One subscription doesn’t include every product.
Choose it if: In-house teams and agencies that want many SEO tools under one login.
Source: Semrush website
AI-enabled content platform
7. Clearscope — Best for editorial optimisation
Clearscope helps writers research, draft, optimise and monitor content for search and AI answers.
- Query Discovery surfaces queries for a topic or URL across Google and AI assistants.
- Search-intent analysis and an editor that guides optimisation.
- AI drafting and editing to speed up a first pass.
- Query Tracking shows where your brand is mentioned in ChatGPT, Gemini and Claude.
Main limitation: It improves editorial work. It doesn’t run browser tasks, technical audits or arbitrary SEO jobs.
Choose it if: Editorial teams that care most about content quality and coverage.
Source: Clearscope website
General-purpose agent workspace · Publisher’s product
8. ShiftHands — Best for Mac-hosted SEO agent workflows
ShiftHands is a Mac app for running and supervising a team of AI agents. The agents run on your own Apple-silicon Mac; you can monitor their work, chat with them and respond to flagged command approvals from the Mac app or a desktop or phone browser.
- Create an SEO agent in a project and give it repeatable work, such as a weekly search-performance review or competitor page checks.
- Search Central shows your Google Search Console and Bing Webmaster Tools numbers in the app, read only.
- Agents browse in Ego Lite, a free separate download, and can use the SEO tools you sign in to there, subject to each provider’s terms. You can watch live or take control.
- Schedule automations so reports come back as result cards in the agent’s chat for you to review.
Main limitation: no built-in keyword-volume database, backlink index, rank tracker or AI-citation tracker. Search Central displays data; it isn’t a direct data feed to agents. Your Mac has to stay on with ShiftHands open.
Choose it if: you want your own configurable agents to run SEO research and recurring reports, using the tools and accounts you already have.
Free: 25 user messages a day, 1 project, 3 agents and 2 daily automations. Pro: $49.99 a month or $499 a year. Agents use the Claude, ChatGPT or API account you connect, under that provider’s pricing and limits.
Download ShiftHands for Mac → See it working
AI-enabled content platform
9. MarketMuse — Best for content planning and topical authority
MarketMuse analyses your content inventory to find topic clusters, competitor gaps and what to create or update next.
- Analyses your whole content inventory and finds high-value topic clusters.
- Finds topics your competitors have missed.
- Shows personalised difficulty based on your site’s existing authority.
- Produces a content plan of what to create or update.
Main limitation: It plans and guides content; it doesn’t execute an SEO campaign on its own.
Choose it if: Content strategists building topical authority across a large site.
Source: MarketMuse website
