Relay.app: AI Workflow Builder With Human Approval Steps
Relay.app is an AI-native workflow builder that turns plain English into a working workflow. You type "when a Stripe payment fails, ask me to approve a refund," and Relay assembles the steps. It connects across 200+ apps and uses human-in-the-loop steps as a first-class feature, not an afterthought.
The 30-second version
- What: AI-native workflow builder with natural-language scenario generation
- Who: operators who want AI to draft the workflow before they edit it
- Price: free up to 200 steps/month, then $19/month annual for Professional
- Best at: workflows that need a human approval step (refunds, contract sends, big emails)
- Verdict: pick Relay when you want AI to draft the workflow first and want clean human-approval steps
What Relay.app actually is
Relay.app is what happens when you build a workflow tool AI-first. Instead of dragging nodes, you describe the workflow in English and Relay assembles it. You then edit the result.
The standout feature: human-in-the-loop steps. Most automation tools make adding "wait for me to approve this" a complex pattern. Relay makes it one click. That matters for workflows that touch money (refunds, payments), brand (outbound emails), or anything you want eyes on before it ships.
Per Relay's own homepage, the platform "converts natural language instructions into visual workflows across 200+ applications" (source: relay.app, verified May 2026).
Key capabilities
- Natural-language workflow generation (describe in English, Relay drafts the steps)
- 200+ app integrations
- Human-in-the-loop steps as a native primitive
- AI agent steps (LLM calls, tool routing)
- 500 free AI credits per month on free tier
- Workflow templates and shared workflow library
Pricing (checked May 2026)
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 1 user, 500 AI credits, 200 steps/month |
| Professional | $19/month (annual) | 1 user, 2000 AI credits, 750 steps |
| Team | $59/month (annual) | 10 users, 2000 credits, 1500 steps |
| Enterprise | Custom | Custom usage, SOC2, GDPR |
Prices change. Verified May 2026. Check current rates at relay.app/pricing.
Who Relay fits
- Operators new to automation who want AI to do the first draft
- Teams whose workflows need human review (legal, finance, sensitive customer ops)
- Anyone who wants approval steps without writing custom logic
Who Relay does not fit
- Power users who already think in workflow graphs (n8n or Make have deeper customization)
- Teams running 10k+ steps a month (cost climbs vs n8n self-host)
Relay vs Zapier and Make
| Axis | Relay | Zapier | Make |
|---|---|---|---|
| Workflow generation | Natural language | Visual editor | Visual canvas |
| Human approval steps | Native primitive | Manual logic | Manual logic |
| Integrations | 200+ | 6000+ | 1500+ |
| AI agent native | Yes | Yes | Yes |
| Cheapest paid plan | $19/mo annual | $19.99/mo | $9/mo |
Pros and cons
Pros:
- Natural-language workflow generation is genuinely good in 2026
- Human-in-the-loop is first-class, not bolted on
- All features in all plans (no feature gating)
Cons:
- Only 200+ integrations (smaller than Zapier and Make)
- Pricing is annual-first; monthly costs more
How I'd use Relay on SellerShorts
When I wanted to build an outbound email workflow to AI tool creators on SellerShorts, I drafted it in Relay in 5 minutes by describing it. The human-approval step before each email goes out caught two drafts that had wrong personalization. That single feature paid for the plan.
Try Relay.app
Get started with Relay.app
Free plan gets 200 steps a month. Enough to try the AI-generated workflows on real use cases.
Selling on Amazon and want AI tools sized for your stack? See the Amazon AI hub.
Frequently asked questions
Does Relay.app really build workflows from plain English?
Yes. You describe the workflow in a sentence and Relay drafts the steps. You then edit. It is not perfect on the first try, but it is faster than dragging nodes for most starter cases.
Is Relay free?
There is a free plan: 1 user, 500 AI credits per month, 200 workflow steps. For most starter automation it is enough. Professional at $19/month annual gets 750 steps and 2000 AI credits.
Relay vs Zapier for human approval workflows?
Relay is significantly better. Human-in-the-loop is a native step in Relay. In Zapier you build it by chaining a 'send email' with a 'wait for response,' which works but is more brittle.
Can Relay run Amazon SP-API calls?
Relay integrates with Amazon-related services through generic HTTP requests but does not have a native Amazon Seller Central or Ads integration. For Amazon-heavy workflows, n8n or Make are better fits.
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