The best Claude plugins for online marketing: SEO, ads and analytics

Connectors, skills and plugins in Claude

Anthropic uses three words that are easy to mix up. A connector is a connection to an MCP server that a vendor runs, so Claude can read from and act in that vendor's product. A skill is a set of written instructions, a SKILL.md file, that teaches Claude how to do a particular task. A plugin packages skills, connectors, commands and agents into one unit you install once. All three are added from Customize in claude.ai or the desktop app and saved to your account, so they follow you into chat on the web, desktop and mobile, into Cowork and into Claude Code; only a plugin's agents are limited to Cowork and Claude Code. Remote connectors arrived as Integrations in May 2025, the connectors directory followed in July 2025, and plugins came to Claude Code in October 2025 and to Cowork in January 2026. My guide to connecting Search Console to Claude walks through the setup.

The plan rules differ per type, which matters when you hand a workflow to a colleague. Directory connectors work on every plan including Free, and on Free you can also add one custom connector by URL. Plugins from the directory appear only on Pro, Max, Ultra, Team and Enterprise, and Claude Code starts at Pro. Several vendors, HubSpot, Adspirer and TikTok among them, still say their connector needs a paid Claude plan, so I treat Pro as the practical minimum for marketing work. On Team and Enterprise an Owner decides which connectors members may use, and sets every plugin to not available, available to install, installed by default or required.

Claude asks before it runs a connector tool, with the choice of "Allow once" or "Always allow", and under Customize > Connectors you can set each tool to Always allow, Needs approval or Blocked. That is finer control than ChatGPT's confirmation step, and also easier to switch off for good: one click on Always allow and a tool that changes budgets runs without asking again. I set every tool that can spend money or edit a record to Needs approval, which is also what HubSpot recommends for its own connector.

As in ChatGPT, Google is missing where marketers need it. Google publishes Drive, Gmail, Calendar and BigQuery connectors and a set of Google Cloud plugins, but nothing for Google Ads, Google Analytics or Search Console, and LinkedIn and Meta have no ads connectors in Claude either. In Claude Code you can run Google's own Google Analytics MCP server locally, which needs a Google Cloud project; Google publishes nothing comparable for Search Console. Everywhere else, every Search Console, GA4 or Google Ads number Claude shows you reaches it through a third party, so the choice of third party matters.

Anthropic's own Marketing plugin

Before adding any vendor, look at the Marketing plugin Anthropic built itself. It is open source, sits fifth in the plugin directory, and adds seven commands: /draft-content, /campaign-plan, /brand-review, /competitive-brief, /performance-report, /seo-audit and /email-sequence. Anthropic designed it for Cowork, and it also works in Claude Code. Its workflows are written around categories such as SEO, email and analytics rather than products, and it ships connector entries for Slack, Canva, Figma, HubSpot, Amplitude, Notion, Ahrefs, Similarweb, Klaviyo and Supermetrics.

Two things are worth knowing before you rely on it. Adding a plugin does not sign you in to anything, so each bundled connector still needs its own login and, for most of them, a paid account with the vendor; without an SEO connector, /seo-audit works from whatever Claude can fetch from the open web. And Google Analytics appears in the plugin's connector list only as an "other option", so measured search data has to come from a connector you add yourself. I treat the plugin as a good set of workflows and the connectors below as the data those workflows need.

How to judge a marketing connector (five questions)

The shortlist at a glance

Rank = position among 10,646 ranked connectors in the Claude Connectors Directory, per mcptop.com on 13 November 2026. GSC Wizard is listed as a plugin, which mcptop does not rank.

SEO

The deepest part of the marketing directory. The split that matters is between tools that read your own Search Console data and tools that sell you estimates about the whole web. You want one of each, and you want to know which one answered. Several smaller Search Console connectors are listed as well; I mention them under also worth a look.

1. GSC Wizard

Good at: answering questions about your own Search Console, GA4 and Bing Webmaster data in plain language, with finished figures instead of row dumps. Ask "which pages lost non-brand clicks since the last core update, and was it rankings or CTR?" and the analysis runs server side against a warehouse that keeps years of history, well beyond Google's 16-month limit. The tools cover query and page performance, cannibalisation, content decay, striking-distance opportunities, URL inspection, IndexNow and GA4, including traffic from AI assistants. In the plugin directory it is listed as "SEO GSC Wizard", with skills for site audits, content decay, cannibalisation, quick wins, indexing checks and weekly reports.

Watch for: it is a paid product, and it is mine. It does not estimate competitor traffic or backlinks, so pair it with one of the next three for that. It is listed as a plugin rather than a Verified connector, so on the Free plan you add it as your one custom connector. A handful of tools act on your properties, such as submitting URLs to IndexNow; set those to Needs approval.

Access: plans from €17/month with a 7-day free trial. Add the plugin from Customize > Plugins on Pro and up, or add https://mcp.gscwizard.com/mcp as a custom connector on any plan. The Claude setup guide has the steps, and the Claude Search Console MCP reference covers scopes and limits.

2. Semrush

Good at: keyword research and competitive analysis if Semrush is already your platform of record: domain overviews, keyword gaps, traffic and backlink data from the same database you use in the interface. It is a Verified connector built by Semrush, and the most popular SEO research connector in the directory.

Watch for: the data is modelled, and every query consumes API units. Semrush One and SEO Classic plans include 50,000 MCP units that refresh at renewal, Advanced and Business plans need a units package, and traffic and market data need a Trends API plan. Give Claude explicit date ranges and row limits instead of letting it decide. On the plus side, Semrush states the connector is read-only: it "can retrieve Semrush data but cannot modify or delete it."

Access: Semrush subscription. Semrush in the directory.

3. Ahrefs

Good at: backlinks above all, plus keywords, rankings, competitor analysis and brand mentions in AI answers. If the question is "who links to our three biggest competitors but not to us?", this is the connector to ask. Anthropic's Marketing plugin uses it as its default SEO source.

Watch for: traffic and volume figures are Ahrefs' estimates and will not match your Search Console clicks. The connector needs a Lite plan or higher, and one call costs at least 50 API units, so Lite's 200,000 monthly units cover at most 4,000 calls and fewer when requests are complex.

Access: paid Ahrefs subscription. Ahrefs in the directory.

4. Similarweb

Good at: the question SEO tools answer badly: how much total traffic a competitor gets, and from which channels. Organic, paid, social and referral splits are useful for sizing a market or checking a competitor's growth story. It is also one of the connectors bundled with Anthropic's Marketing plugin.

Watch for: these are panel-based estimates, least reliable for small sites, so never put a Similarweb visit count next to your own GA4 sessions without a label. Access needs an API-only, Business or Enterprise plan, and every request uses data credits from that plan.

Access: Similarweb account with API access. Similarweb in the directory.

5. Ubersuggest

Good at: being the most affordable way to get keyword ideas, traffic estimates, backlinks, SERPs and site audits in one place. It is in the directory both as a Verified connector and as a plugin with SEO skills on top, and it is read-only: Neil Patel's team says it never deletes projects or publishes anything on your behalf.

Watch for: estimates are shallower than the big two for competitive niches and non-English markets, and data access follows your Ubersuggest plan limits. Use it for direction, not for numbers in a client deck.

Access: Ubersuggest account; individual plans start at $12 a month. Ubersuggest in the directory.

6. SE Ranking

Good at: breadth. Keywords, backlinks, SERP analysis, audits, AI search visibility and the data from your rank-tracking projects come through one connection, and SE Ranking also publishes a plugin with SEO skills built on it.

Watch for: it carries the Community label, so Anthropic screened it but did not review its tools in depth, although SE Ranking built it. Every successful call takes credits from your balance; failed requests are free. A large tool surface also gives Claude more chances to pick the wrong tool when several SEO connectors are on, so enable it on its own for SE Ranking questions.

Access: MCP is included on every SE Ranking API plan, and the 14-day trial comes with 100,000 API credits. SE Ranking in the directory.

Paid ads and marketing data

Google, Meta and LinkedIn have no ads connectors in Claude, so paid media runs through data connectors and management tools; TikTok is the one big ad platform with its own. This is also where write access matters most, because a wrong action costs money rather than time.

7. Windsor.ai

Good at: cross-channel reporting from one connection. It links more than 350 sources, including Google Ads, Meta, TikTok, LinkedIn, GA4, Search Console, Shopify and HubSpot, so "compare cost per lead across every channel last quarter" is one question. It is the highest-placed ads data connector in the directory at #38, and Windsor.ai also lists narrower connectors for paid media, social, web analytics, CRM and e-commerce. It can act as well as read: Windsor.ai counts 163 write actions across 23 platforms, such as pausing campaigns or changing budgets, and most pause, enable and update actions can be undone.

Watch for: one vendor holding tokens for your entire stack, and write access that reaches live spend. Windsor.ai says the assistant confirms before every change, and write actions work on every plan, so set those tools to Needs approval and connect only the accounts a question needs.

Access: free plan available; paid plans from $19/month for three data sources. Windsor.ai in the directory.

8. Supermetrics

Good at: reporting, if your agency already runs on Supermetrics. It connects more than 150 sources and returns the campaign metrics your Looker Studio or spreadsheet reports already use, so answers in Claude match the numbers in the client report. It is one of the connectors bundled with Anthropic's Marketing plugin, and Supermetrics also has its own plugin.

Watch for: it is no longer read-only. Supermetrics now advertises that you can "create, start, stop, or modify existing campaigns with a single prompt", so review the tool permissions before connecting client accounts that were only ever meant for reporting. Large pulls also come back as many rows for Claude to add up, so ask for the row count behind any total.

Access: Supermetrics subscription, with a 14-day free trial. Supermetrics in the directory.

9. TikTok for Business

Good at: being official. TikTok built this Verified connector itself, and it covers campaign management, performance reporting, audience configuration and creative operations, so Claude can pull a report, adjust a budget or set up a campaign in TikTok Ads Manager from the conversation.

Watch for: it covers TikTok only, and it has full write access to your ad account. Set the tools that create campaigns or change budgets to Needs approval before the first conversation, not after.

Access: free with a TikTok Ads Manager account. TikTok for Business in the directory.

10. Adspirer

Good at: managing campaigns from the chat across Google Ads, Meta, TikTok and LinkedIn, from reading performance to drafting creatives and launching campaigns in plain language. It splits into separate connectors for search ads (Google Ads and Microsoft Advertising), social ads and retail media (Amazon Ads and Walmart Connect), and it also ships as a plugin.

Watch for: its guardrails are better than most. New campaigns are always created paused, budget changes need explicit confirmation, and it cannot delete existing campaigns. The pricing is metered per tool call, though, and one exploratory question can use several calls.

Access: free for 15 tool calls a month; Plus is $49 for 150 calls, Pro $99 for 600 and Max $199 for 3,000. Adspirer in the directory.

Product and web analytics

With no Google Analytics connector from Google, analytics in Claude means either a third-party GA4 source (GSC Wizard, Windsor.ai and Supermetrics above all read GA4) or a product analytics platform with its own connector. PostHog and Amplitude both have a Verified connector and a plugin.

11. PostHog

Good at: the funnel after the click. Trends, funnels, retention, errors and feature flags from your own PostHog project, so "which signup source retains best after 30 days?" gets a real answer. Its plugin is the most installed analytics plugin on claude.com, with 13,453 installs.

Watch for: it can also create and change feature flags, insights and experiments, which belong to your product team. PostHog offers a read-only mode that removes every tool that creates, updates or deletes data, and that is the mode to give a marketing team.

Access: connecting and calling the MCP tools is free; normal PostHog usage billing applies. PostHog in the directory.

12. Amplitude

Good at: behavioural analytics for teams already on Amplitude. It can query charts and also create and edit charts, dashboards, notebooks, experiments, cohorts and feature flags, so a conversation can end with a saved dashboard rather than a screenshot. Anthropic's Marketing plugin uses it as its default product analytics source.

Watch for: the answers are only as good as your event taxonomy, so ask Claude to name the event behind each figure. Write calls need the "Use MCP (write)" permission in Amplitude, which means an admin can keep marketers on read access.

Access: Amplitude account. Amplitude in the directory.

Also worth a look

Three traps with marketing connectors

Estimates in the same table as measurements

Turn on GSC Wizard, Ahrefs and Similarweb together and ask for "our traffic versus competitors", and you will get a tidy table mixing your measured Search Console clicks, Ahrefs' organic estimate and Similarweb's panel visits, with nothing to say they are different kinds of number. Nothing in the protocol carries provenance. Ask for a source column every time, and never send a client a figure you cannot trace to a named connector and date range.

"Always allow" is budget access

Claude's approval prompt protects you from an action you did not ask for, but only until someone clicks Always allow on it, and after that a tool that pauses campaigns or moves budget runs silently. "Pause the underperforming campaigns" then depends entirely on how the model defined underperforming. Keep every write tool on Needs approval, ask Claude to list exactly what it will change before you approve, and keep account-level spending limits set on the ad platform itself.

Plugins bring more connectors than you think

Anthropic's Marketing plugin alone lists ten connectors, and every connector you have on adds its tool definitions to the model's context. With several overlapping marketing tools enabled, Claude starts answering a Search Console question with a third-party estimate, or a GA4 question through the wrong source. It looks like the model being careless, and the fix is to connect only the two or three tools the current question needs.

Three setups that work

Frequently asked questions