Best Marketing and SEO Plugins, Skills, and MCP Servers in 2026
Research-backed marketing and SEO plugins, skills, and MCP servers for search data, content, copy, social publishing, email, and ads.
Updated July 28, 2026
These extensions cover the marketing work agents are genuinely good at today: pulling real search and keyword data instead of guessing, producing content and copy that converts, publishing to social networks, and running email and ad campaigns. The skills need nothing but an install; the integrations connect to accounts you already run.
What it isGoogle’s official Google Ads MCP server: account discovery and natural-language performance analysis over your campaigns. Deliberately read-only - it reports, it doesn’t change bids.When to useCampaign reporting and analysis in plain language. Meta and LinkedIn publish no official routes - Amazon Ads is the only other first-party ads option.What you needA Google Ads account and API developer token.
What it isCorey Haines’s Marketing Skills collection: 49 installable skills spanning SEO, content, copywriting, CRO, paid marketing, analytics, lifecycle, sales, and growth. Install the full collection or select only the skills you need.When to useWhen you want one broad marketing toolkit instead of separate skill bundles. Use the relevant skills for the job, and connect first-party data sources such as Search Console or Google Ads when the work depends on live account data.
What it isBuffer’s official MCP: the agent reviews your content calendar, brainstorms and saves ideas, and drafts or schedules posts into your existing Buffer queue.When to useThe simplest hosted route if you already use Buffer - nothing to self-host, and the free tier works.What you needA Buffer account; the free tier works.
What it isAnthropic’s official marketing plugin: campaign planning, content creation, brand voice, competitive analysis, SEO audits, and email sequences bundled as one workflow set, with connections to marketing tools.When to useA solid single install if you want broad coverage without assembling individual skills. Specialist skills go deeper on each job it covers.What you needCurrently a Claude-only plugin.
What it isAhrefs’ official hosted MCP server: live keyword research, SERP data, backlinks, competitor analysis, content gaps, and rank tracking from the Ahrefs index, exposed as about forty tools.When to useIf your team already pays for Ahrefs, this makes the subscription agent-native - competitor and backlink work especially. Don’t buy Ahrefs just for this; Search Console plus DataForSEO covers most solo needs.What you needA paid Ahrefs plan.
What it isSemrush’s official remote MCP: keyword and domain analytics, backlinks, traffic estimates, and competitive research from the Semrush index.When to useSame logic as Ahrefs - it makes an existing subscription agent-native. Pick whichever index your team already trusts; running both buys little.What you needA Semrush account.
What it isKlaviyo’s official MCP server with read and write access: customer profiles, segments, events, campaign data, and email/SMS lifecycle workflows.When to useEcommerce lifecycle marketing where Klaviyo is already the system of record. Write access means the agent can act on segments - review what you enable.What you needA Klaviyo account.
What it isBrevo’s official hosted MCP: twenty-seven modules spanning email and SMS campaigns, contacts, and campaign analytics.When to useBudget-friendly campaign email if Brevo is your platform. Note: Mailchimp has no equivalent here - its official MCP covers transactional email only, not campaigns.What you needA Brevo account.
What it isA free Claude Code plugin bundling eleven auto-activating SEO skills and three agents: audits, technical SEO, schema markup, keyword clustering, content briefs, and AI-visibility checks.When to useA one-install starting kit for SEO work in Claude Code. It overlaps the SEO portion of Marketing Skills - try one approach, not both at once.
What it isMetricool’s official MCP covering both halves of social work: scheduling and publishing across the major networks, plus the analytics Metricool is known for.When to useWhen you want performance data and publishing through one connection - and it works on the free plan.What you needA Metricool account; the free plan works.
What it isActiveCampaign’s official remote MCP: contacts, lists, tags, custom fields, and automations, plus inspecting or sending campaigns with engagement analytics - no developer wiring needed.When to useAutomation-heavy lifecycle marketing where ActiveCampaign is the system of record. It can create and send campaigns - keep write actions visible before approving them.What you needAn ActiveCampaign account; the MCP URL is unique per account, copied from Settings > Developer, and corporate workspaces need admin approval.
What it isHootsuite’s official MCP suite for its social management platform: publishing, scheduling, and account management across networks from the agent.When to useTeams already on Hootsuite plans with approval workflows and many accounts. Overkill for a solo founder - Postiz or Buffer is the better start.What you needA Hootsuite plan.
What it isSubstack’s official MCP: subscriber, revenue, retention, traffic, and post analytics for your publication, without exports. Strictly read-only - it cannot publish, modify posts, or operate Notes.When to useAnalyzing the newsletter business behind an eligible publication - growth, churn, and revenue questions in plain language.What you needAdmin access to a Substack Bestseller publication - the route isn’t available to other publications.
What it isAccess to your Search Console data - queries, clicks, impressions, positions, indexing - through the leading community-built server. Google publishes no official route for Search Console yet.When to useFirst, before paying for anything: it’s your own site’s real query data, free. SEO skills like seo-audit get sharper when it’s connected.What you needA Google account with Search Console access to your site. Community-built server.
What it isTypefully’s official MCP and skills: drafting, threading, and scheduling posts - strongest for X, with the cross-posting Typefully already supports.When to useIf X threads are your main channel and you already write in Typefully. For many-network publishing, use a multi-network scheduler like Postiz or Buffer.What you needA Typefully account.
What it isMailerLite’s official hosted MCP: newsletter audiences, campaigns, automations, analytics, and content actions over a simple OAuth connection, with both read and write workflows.When to useStraightforward newsletter and email marketing on MailerLite. It can send campaigns and change automations - review proposed actions before approving.What you needA MailerLite account.
What it isAmazon Ads’ first-party MCP server, in open beta: campaign creation and updates, reporting, settings, billing, and finance operations - a rare first-party advertising route rather than a community wrapper.When to useRunning or reporting on Amazon advertising as an eligible partner. It includes write-capable campaign, billing, and finance operations - review what the agent proposes before it acts.What you needAn Amazon Ads partner account with active Ads API credentials; the route is in open beta and not generally available to every advertiser.
What it isIterable’s official open-source MCP server, in beta: nearly the whole Iterable API mapped into a local server that runs read-only, no-PII, and no-sends by default, with explicit flags to enable more.When to useCross-channel campaign work on Iterable by teams comfortable with a local setup. Elevated flags can schedule real sends - review those tool calls and test in a sandbox first.What you needNode.js 20+ and an Iterable API key with your regional endpoint; run npx @iterable/mcp setup.
What it isCustomer.io’s official hosted MCP with OAuth: campaigns, broadcasts, and segments, readable and writable from the agent.When to useSaaS lifecycle messaging where Customer.io runs your flows. Klaviyo is the ecommerce equivalent - pick the one matching your stack.What you needA Customer.io account.
What it isKit’s official hosted MCP: more than sixty-five tools over subscribers, tags, segments, sequences, broadcasts, forms, purchases, and analytics, with guarded writes and confirmation prompts.When to useWhen Kit is your newsletter or creator-email system of record - it’s unusually thorough about risk tags and confirmations for a write-capable route.What you needA paid Kit Creator or Creator Pro plan - free accounts can connect and see the tools, but actions won’t execute.
What it isAn open-source social scheduler with an official MCP and skill. One connection lets the agent draft, schedule, and publish across the major networks.When to useThe default social publishing route if you don’t already pay for a scheduler - self-host it free or use Postiz Cloud. Per-platform direct routes barely exist; schedulers like this are how agents post.What you needA Postiz Cloud account, or your own self-hosted instance.
What it isDataForSEO’s official MCP server over its data APIs: live SERPs, keyword volumes, on-page audits, backlinks, and domain analytics - raw data rather than a polished tool UI.When to useWhen you want search data without an Ahrefs or Semrush subscription, and you’re comfortable paying per call. The agent does the analysis; DataForSEO just supplies the numbers.What you needA DataForSEO account; API calls bill per use.
What it isbeehiiv’s official hosted MCP: read-only access to publication, subscriber, post, analytics, and account data in its current v1.When to useAnalyzing and reporting on an existing beehiiv publication. It cannot draft or publish - beehiiv says read/write is planned for v2, which is announced only.What you needA beehiiv account.
What it isAyrshare’s official Claude Code plugin and hosted action MCP: twenty-seven tools for publishing and managing social content across more than 13 networks through one API.When to useWhen Ayrshare’s API is already your social distribution layer, or you’d rather post through one API than run a scheduler UI.What you needAn Ayrshare account and API key. The plugin ships from Ayrshare’s own marketplace - it isn’t listed on claude.com/plugins.
MCP
Google Ads
Marketing Skills
Buffer
Anthropic Marketing
Ahrefs
Semrush
Klaviyo
Brevo
SearchFit
Metricool
ActiveCampaign
Hootsuite
Substack
Google Search Console
Typefully
MailerLite
Amazon Ads
Iterable
Customer.io
Kit
Postiz
DataForSEO
beehiiv
Ayrshare
Skill
Plugin
