n8n MCP is three things, and people mean different ones
Unlike most entries in this category, "n8n MCP" is ambiguous, and the ambiguity causes most of the confusion in forum threads about it. There are three distinct pieces:
• The MCP Server Trigger node. Put it at the front of a workflow and that workflow becomes an MCP server: an assistant can call it as a tool. This is what most people mean.
• The MCP Client Tool node. The reverse. An n8n workflow consumes tools from an external MCP server, so your automation can call somebody else's.
• The native instance-level server, in public preview since 2026, which exposes n8n itself rather than one workflow.
The two-directional part is genuinely distinctive. Zapier MCP is a server and only a server. n8n sits on both sides of the protocol, which makes it the natural glue when you want an assistant and an automation platform to reach each other rather than just one calling the other. If you are new to the protocol underneath any of this, what MCP is covers it in plain English.
On price it wins, and it is not close
This is the section a competitor's comparison page usually skips, so: the self-hosted Community Edition is free, fair-code licensed, with unlimited executions, and both MCP nodes are included. Your only cost is the box it runs on — single-digit dollars a month on a small VPS or a managed pod.
Set that against the alternative in this family. Zapier MCP spends two tasks from your plan quota on every single tool call, which makes its free tier 50 calls a month and its entry paid plan 375. An agent is chatty. That ceiling arrives quickly.
n8n Cloud is priced per execution instead — roughly €24 a month for 2,500 executions at the entry tier, rising steeply — so the free-and-unlimited claim is specifically about self-hosting. If you were going to self-host anyway, MCP costs you nothing extra. If you were not, the honest cost is not the licence, it is the afternoon and the ongoing responsibility.
What you pay instead
Everything a hosted server does for you silently becomes yours: running the instance, applying updates, holding the credentials for every service the workflows touch, and noticing when a workflow has been quietly failing for a week.
There is also a protocol-version tax that is easy to underestimate. MCP has had five incompatible revisions in under two years, the most recent removing the initialize handshake and protocol-level sessions entirely. A hosted server absorbs that. A self-hosted one is a thing you have to remember to upgrade, and the symptom of not upgrading is an assistant that quietly stops seeing your tools.
None of that is a reason to avoid n8n. It is the reason the comparison is not really about price.
Where a workflow tool stops being enough for marketing
A workflow does what it was built to do. That is the entire value proposition, and it is exactly the wrong shape for the question a marketer actually asks.
"Pause the ad set whose CPA went over $80" is workflow work, and n8n is excellent at it. "Why did our Meta CPA jump on Tuesday?" is not — answering it means pulling the period, comparing it, looking at delivery, checking whether creative fatigued or an audience overlapped or a competitor moved, and deciding which of those explains it. Nobody can wire that into a canvas in advance, because the third step depends on the second one's answer.
That is the line between actions and decisions. An n8n workflow behind MCP gives an assistant a set of actions to call. A purpose-built server does the analysis on the server side and hands back a change with a reason attached — which is what Google Ads, Meta and the rest of the Sprites connector do, with every write held as an approval card rather than executed.
The approval gap applies here too
MCP defines no approval step, so a write tool reached by a model executes. n8n's answer is better than most — because you own the workflow, you can build a human approval node into it — but notice what that means: the safety is something you implement and maintain, not something the tool guarantees.
Self-hosting also moves you into the risk category the specification worries about most. Its security document devotes an entire section to local and self-run servers, credentials on disk, and processes running with your privileges. We went through what applies to a marketing account in is MCP safe.
Who should use which
Use n8n MCP if you already run n8n, or you want an assistant to trigger multi-step logic you have designed yourself, or you need the client direction as well as the server one. Self-hosted, it is the cheapest option in this category by a wide margin and it is not a compromise.
Use Zapier MCP if you want breadth with zero operational burden and your call volume is low enough that two-tasks-per-call does not bite.
Use a purpose-built server for any channel where the question is "what should change and why" rather than "please run this workflow" — and for anything that can spend money without a human between the sentence and the account.
Most teams that take this seriously end up with two: one automation platform for the deterministic work, and one specialist server for the channels that spend money. They are not competing for the same slot.