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 26, 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.
Access 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.
Google’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.
The SEO & Content group from the Marketing Skills pack: seo-audit, ai-seo, programmatic-seo, site-architecture, schema, content-strategy, and aso. Each skill installs individually and reads your product-marketing profile first, so audits and content plans match your product and audience instead of a generic checklist.
Organic growth end to end: start with seo-audit to find what’s broken, use content-strategy and programmatic-seo to plan what gets built, and ai-seo for visibility in AI answers. Connect Search Console or Ahrefs so the skills work from real query data.
The Content & Copy group from the Marketing Skills pack: copywriting and copy-editing for landing pages, plus the emails skill for marketing emails, and social, video, image, and SMS copy. The copywriting skill builds pages around the reader’s objections and the action you want; copy-editing runs a seven-pass edit over copy that exists but underperforms.
Buffer’s official MCP: the agent reviews your content calendar, brainstorms and saves ideas, and drafts or schedules posts into your existing Buffer queue.
Anthropic’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.
Ahrefs’ 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.
If 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.
A reference skill from the Marketing Skills pack: a library of behavioral principles for diagnosing motivation and friction, applied to positioning, copy, and conversion decisions.
As a supporting lens alongside the copywriting and CRO skills - it explains why readers act, not what to publish. Treat its heuristics as hypotheses to test, not evidence of how your users behave.
Ecommerce lifecycle marketing where Klaviyo is already the system of record. Write access means the agent can act on segments - review what you enable.
Budget-friendly campaign email if Brevo is your platform. Note: Mailchimp has no equivalent here - its official MCP covers transactional email only, not campaigns.
A 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.
Metricool’s official MCP covering both halves of social work: scheduling and publishing across the major networks, plus the analytics Metricool is known for.
ActiveCampaign’s official remote MCP: contacts, lists, tags, custom fields, and automations, plus inspecting or sending campaigns with engagement analytics - no developer wiring needed.
Automation-heavy lifecycle marketing where ActiveCampaign is the system of record. It can create and send campaigns - keep write actions visible before approving them.
Substack’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.
The CRO group from the Marketing Skills pack - five skills, one per conversion surface: cro for general conversion optimization, plus onboarding, paywalls, popups, and signup.
When traffic exists but conversion is the bottleneck. Install only the surface you’re working on; they cross-reference the copywriting and A/B-testing skills where the fix is copy or needs a test.
The Paid & Measurement group from the Marketing Skills pack: the ads skill for campaign structure, plus ad creative, A/B testing, and analytics - the planning and analysis half of paid marketing.
Planning campaigns and writing ad variants for any platform. For pulling actual performance numbers, connect Google Ads or Amazon Ads - the platforms with official agent routes.
If 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.
MailerLite’s official hosted MCP: newsletter audiences, campaigns, automations, analytics, and content actions over a simple OAuth connection, with both read and write workflows.
Amazon 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.
Running 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.
Iterable’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.
Cross-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.
Kit’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.
The 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.
DataForSEO’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 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.
Analyzing and reporting on an existing beehiiv publication. It cannot draft or publish - beehiiv says read/write is planned for v2, which is announced only.
Ayrshare’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.