
$19.99/mo Free tier 14 day free trial MCP API
Why it comes up: App-to-app Zaps and separate agents if you want to design each workflow yourself rather than delegate in chat.
Stands out: Zapier MCP is on every plan, including Free, and connects AI assistants to the same 9,000-app catalog.
Watch out: Each MCP tool call uses two tasks. Free Zaps are limited to two steps, and Professional is a single-user plan.
Best for
- Ops teams connecting SaaS apps without code
- People who want Claude or ChatGPT to act in Gmail and Slack
- Solo users who fit on one Professional seat
Read the Zapier write-up · OpenTag vs Zapier

€20/mo Free tier Free trial MCP API
Why it comes up: Self-hosted AI agent workflows if you want to own the runtime and build nodes by hand.
Stands out: Billing counts full workflow executions, not individual steps, and the Community edition is free to self-host.
Watch out: Cloud prices are published in euros only. The Cloud trial is capped at 1,000 executions, and unused AI Assistant credits do not roll over.
Best for
- Technical teams that want to self-host for free
- Builders who prefer per-execution billing
- Teams that want to drive workflows from Claude via MCP
Read the n8n write-up · OpenTag vs n8n
Why it comes up: Visual scenarios with AI agents when the job is a defined process, not ad hoc asks in a channel.
Stands out: Make's drag and drop canvas shows every branch, router and iterator of a scenario, with real time run monitoring, which suits complex multi branch automations better than linear step lists. Greenhouse and Workday are among its enterprise apps.
Watch out: Every module action uses a credit, including reads, searches and iterations, so polling scenarios and loops burn credits fast. The Free plan allows only two active scenarios and a 15 minute minimum interval, and enterprise apps are reserved for the top tier.
Best for
- Ops builders who think in flowcharts
- Scenarios with many branches, loops and error handling
- Teams that want AI agents and MCP inside their automations
Read the Make write-up · OpenTag vs Make