The best MCP server for B2B marketing depends on what the agent should touch. OXYGEN publishes LinkedIn and X posts after approval, reads LinkedIn engagement signals and competitor ads, and feeds engagers into a CRM and sequences, from $49 a month. HubSpot edits emails, pages and campaigns, Webflow manages your site, Canva makes designs, Semrush reads SEO data, Meta Ads runs campaigns, and Google Analytics and Google Ads report.
By Tim Scheuer, Co-founder of Oxygen · Checked October 19, 2026
An MCP server lets Claude, ChatGPT or a coding agent call a marketing tool directly: draft a post, pull a GA4 report, check keyword data, edit a landing page or build an ad campaign. Compare five things: what the server covers, whether the vendor builds it, whether the agent can only read or can also change things, how it is hosted and signed in to, and which plan you need. Most marketing servers read more than they write. Google Analytics and Google Ads are read-only, and Semrush reads SEO data, while HubSpot, Webflow, Canva and Meta Ads can change live assets, so check which writes ask for a confirmation first.
| Tool | What it covers | Who builds it | Read or write | Hosting and sign-in | Plan needed | Starts at |
|---|---|---|---|---|---|---|
 OXYGENAgentic marketing and sales platform | LinkedIn and X publishing, post analytics, LinkedIn signals, competitor ads, CRM, sequences | Official, by OXYGEN | Read and write; posts publish only after approval | Hosted at oxygen-agent.com/mcp; OAuth, or the CLI with a key | Free plan connects; publishing and sending need a paid plan | Free plan; paid from $49 a month |
 HubSpotCRM and marketing suite with a remote MCP server | CRM, marketing emails, landing and website pages, blog posts, segments, campaigns | Official, by HubSpot | Read and write; emails stay drafts, several writes ask first | Hosted at mcp.hubspot.com; OAuth with PKCE | All accounts; AEO tools need Marketing Hub Pro or Enterprise | Every HubSpot account; AEO tools need Marketing Hub Professional or Enterprise |
 WebflowWebsite builder with a hosted MCP server | CMS, pages, assets, forms, SEO metadata, Designer, site analytics | Official, by Webflow | Read and write; publishes CMS items | Hosted at mcp.webflow.com/mcp; OAuth, one workspace per sign-in | A Webflow site; analytics reads need paid add-ons | Any Webflow account with a site; Analyze, Optimize and AEO are paid add-ons |
 CanvaDesign platform with a hosted MCP server | Design generation, editing, search, assets, comments and export | Official, by Canva | Read and write, within the user's own permissions | Hosted; OAuth per user, already reachable from Claude, ChatGPT and Codex | All plans; brand features on Pro and above | All plans, Free included; brand kits and templates need Pro or above |
 SemrushSEO data suite with a hosted MCP server | SEO API data, Trends data, read-only project data | Official, by Semrush | Read-only | Hosted at mcp.semrush.com/v2/mcp; OAuth, or an API key in a header | Starter, Pro+, SEO Classic Pro or Guru; or a Trends API plan | Semrush One Starter or Pro+, or SEO Classic Pro or Guru; 50,000 API units included |
 Meta AdsAd platform with a hosted MCP server | Reporting, campaigns, ad sets and ads, catalogs, A/B tests, lift studies | Official, by Meta | Read and write; permissions chosen at consent | Hosted at mcp.facebook.com/ads; Facebook Login for Business or a token | Ads permissions on your Meta business; no plan stated | No MCP price published |
 Google AnalyticsWeb analytics with an open-source MCP server | GA4 reports, funnels, realtime data, property details | Google Analytics team; experimental | Read-only | Runs locally via pipx; Google credentials with the read-only scope | A GA4 property and a Google Cloud project with the APIs on | Free and open source under Apache 2.0 |
 Google AdsAd platform with an open-source MCP server | Google Ads metrics, budgets and campaign status through GAQL | Official, by the Google Ads API team | Read-only | Local stdio or your own Cloud Run; OAuth or a service account | A Google Cloud project with Explorer, Basic or Standard access | No price stated; needs a Google Cloud project with API access |
OXYGEN Agentic marketing and sales platformBest for: B2B teams whose agent should publish LinkedIn posts with approval, read engagement signals and competitor ads, and turn engagers into leads.
OXYGEN's hosted MCP server at oxygen-agent.com/mcp connects Claude to one GTM workspace. An agent drafts and schedules LinkedIn and X posts, and nothing goes out until each post is approved. It reads LinkedIn and X post analytics, plus LinkedIn profile viewers, new followers and post reactions from your connected accounts at no extra cost. Competitor ads from the Meta, Google, LinkedIn and TikTok ad libraries run on credits. Engagers land in tables and a built-in CRM, and a signal can start a workflow or enroll the person in a sequence across email, LinkedIn and WhatsApp.
HubSpot CRM and marketing suite with a remote MCP serverBest for: Teams on HubSpot Marketing Hub whose agent should draft emails, edit landing pages and blog posts, and read campaign results.
HubSpot's remote MCP server at mcp.hubspot.com has been generally available to all HubSpot accounts since April 13, 2026, and signs in with OAuth and PKCE. Beside CRM records, its marketing tools create and edit marketing email drafts, build and publish landing pages, website pages and blog posts, manage segments and campaigns, and read email, content and campaign analytics with closed-won attribution. Segment and campaign writes ask for confirmation first. AEO tools that track brand visibility in AI answers need Marketing Hub Professional or Enterprise.
Webflow Website builder with a hosted MCP serverBest for: Teams on Webflow that want the agent to update CMS content, pages and SEO metadata, and read site analytics.
Webflow's remote MCP server at mcp.webflow.com/mcp signs in with OAuth, and each authorization covers one workspace. Its docs cover Claude Code, Claude Desktop, ChatGPT, Codex and Cursor. The agent can create CMS collections and items, publish and unpublish them, edit pages, assets, forms, the sitemap and SEO metadata, and build in the Designer. With the paid add-ons on a paid site plan, it reads Webflow Analyze, Optimize and AEO data. Some Designer tasks need the Designer open with the Bridge App, and it cannot create new site projects.
Canva Design platform with a hosted MCP serverBest for: Marketers who want the agent to generate social graphics, decks and ad creative from a brief, then export them.
Canva runs a remote MCP server that its quickstart says Claude, ChatGPT, Codex, Gemini and other AI tools can already reach. Each person signs in with their own Canva account over OAuth and works only on designs they can access. Tools generate designs from a brief, edit them, search designs and folders, upload assets, add comments, and export to PDF, PNG, JPG, PPTX or MP4. Brand kits, brand templates, autofill and resizing need Canva Pro or above, and design generation is limited to 20 requests a minute.
Semrush SEO data suite with a hosted MCP serverBest for: SEO and content teams that want Semrush search, Trends and project data inside Claude or ChatGPT.
Semrush hosts its MCP server at mcp.semrush.com/v2/mcp over Streamable HTTP. It signs in with OAuth by default, and clients without OAuth can send an API key in the Authorization header. Semrush lists official apps in Claude's connector directory and in ChatGPT, plus setup for Claude Code, Cursor, VS Code, Microsoft Copilot and Perplexity. The server reaches every SEO API endpoint, Trends data on Trends plans, and project data read-only, so the agent cannot create projects or change settings. Each request spends API units from your subscription.
Meta Ads Ad platform with a hosted MCP serverBest for: Teams that run Facebook and Instagram ads and want the agent to report, build campaigns and run A/B tests.
Meta hosts an ads MCP server at mcp.facebook.com/ads that works with any MCP client. Its tools cover reporting, creating and editing campaigns, ad sets and ads, product catalogs, signals and datasets, A/B tests and conversion lift studies, and activity logs. You sign in through Facebook Login for Business with OAuth, or pass a user or system user token. The minimum permission is ads_mcp_management with ads_read or ads_management, so you choose read-only or read and write at consent. Meta's setup guide covers Claude Code and ChatGPT.
Google Analytics Web analytics with an open-source MCP serverBest for: Teams that want Claude Code or Gemini to answer GA4 questions on traffic, funnels and realtime users without opening reports.
The Google Analytics team publishes an experimental MCP server on GitHub that runs on your own machine through pipx, not as a hosted service. It signs in with Application Default Credentials and needs the Analytics read-only scope, plus the Admin and Data APIs turned on in a Google Cloud project. Its seven tools read account summaries, property details and custom dimensions, and run standard, funnel and realtime reports. Google's developer page says it serves read requests only and cannot change your Analytics settings. Its README covers Gemini CLI, Gemini Code Assist and Claude Code.
Google Ads Ad platform with an open-source MCP serverBest for: Teams that want the agent to pull Google Ads metrics, budgets and campaign status, with no way to change bids.
The Google Ads API team documents an MCP server, with code in the googleads GitHub repository, that runs locally over stdio or on your own Cloud Run service. It signs in with OAuth 2.0 or a service account and no longer needs a developer token since September 9, 2026, though it still needs a Google Cloud project with API access. Its tools list accessible accounts, describe resource fields and run GAQL queries for metrics, budgets and status. Google calls it strictly read-only: it cannot change bids, pause campaigns or create assets. Claude and ChatGPT connect to a Cloud Run deployment as custom connectors.
| If you need | Pick |
|---|---|
| LinkedIn and X posts with approval, engagement signals and competitor ads, tied to a CRM | OXYGEN |
| Draft emails and edit pages, blog posts and campaigns in HubSpot | HubSpot |
| Publish CMS content and fix SEO metadata on a Webflow site | Webflow |
| Generate and export designs from a brief | Canva |
| SEO and Trends data inside Claude or ChatGPT | Semrush |
| Build and edit Facebook and Instagram campaigns | Meta Ads |
| Read-only GA4 reports and funnels | Google Analytics |
An MCP server is a vendor's endpoint that an AI agent connects to through the Model Context Protocol. For marketing, it turns a tool's actions into calls the agent can make: pull a traffic report, read keyword data, draft an email, edit a landing page, schedule a post or build an ad campaign. Most marketing vendors host theirs at a URL you sign in to with OAuth, and a few, such as Google Analytics, run on your own machine.
Start with the tools your work already lives in. A common set: HubSpot for emails, pages and campaigns, Google Analytics for traffic, Semrush for search data, Webflow for the site, Canva for creative, and OXYGEN for LinkedIn posts, engagement signals, competitor ads and follow-up sequences. Add Meta Ads or Google Ads when the agent should report on paid campaigns. Fewer servers keep the tool list short, which helps Claude pick the right one.
Add each server as a connector in Claude's settings and sign in with OAuth, then ask in plain language: summarize last week's GA4 traffic, draft five LinkedIn posts from our latest blog post, or list which competitors run LinkedIn ads. In Claude Code, add servers with claude mcp add, as the Semrush, Webflow and Meta docs show. Keep confirmations on for anything that publishes or spends.
Yes. Semrush has an official ChatGPT app, Webflow documents ChatGPT, HubSpot's page and blog tools work in ChatGPT, Canva says ChatGPT already reaches its server, and Meta's guide covers ChatGPT with OAuth. Google Ads connects as a custom connector to your own Cloud Run deployment. OXYGEN connects in ChatGPT developer mode with a smaller reviewed tool set for tables, lead search, signals and knowledge; publishing and sequences run from Claude, the CLI or the web app.
Some can. OXYGEN schedules LinkedIn and X posts, and each one publishes only after it is approved. HubSpot publishes landing pages, website pages and blog posts, and asks before publishing a landing page. Webflow publishes CMS items, and Meta Ads creates and edits campaigns, ad sets and ads. Google Analytics, Google Ads and Semrush are read-only, so they report and change nothing.
Connect OXYGEN and a LinkedIn account in it. OXYGEN reads LinkedIn profile viewers, new followers and post reactions from your connected accounts at no extra cost, plus LinkedIn and X post analytics. Ask Claude who reacted to last week's post or who viewed your profile; the people land in a table, and a signal can start a workflow or enroll them in a sequence across email, LinkedIn and WhatsApp.
Check three things. Sign-in: HubSpot, Semrush, Canva, Webflow, Meta and OXYGEN use OAuth, so no key has to sit in a config file. Scope: Meta lets you grant read-only ads permissions, Webflow binds each sign-in to one workspace, and Canva shows each user only their own designs. Writes: HubSpot asks before segment and campaign changes, and OXYGEN holds every post until it is approved. Read-only servers such as Google Analytics and Google Ads are a safe place to start.
We make OXYGEN, so it comes first and you should read this as an interested list. The other tools are the ones teams compare most often when they pick a MCP server for marketing. Each one is described from its own website, pricing page and docs, checked on the dates below; OXYGEN's facts and prices come from the product and its live price list. Prices are the cheapest self-serve plan each vendor lists.
The products named here are trademarks of their owners and are not affiliated with OXYGEN. Something out of date? Tell us.