API to Relay Integration | MESA
Connect API to Relay and automate your tasks
Describe to build
Activity reports
Fully supported
MESA's API to Relay integration is the fastest way to sync data between the two — without touching a line of code. Choose which fields to send, how they're formatted, and when the sync happens. Start with a pre-built template, customize it with AI, or build something completely unique in under 10 minutes.
★★★★★ 4.9 rating on Shopify App Store
Why integrate API with Relay
The API to Relay integration helps you sync data, automate manual tasks, and keep your stack aligned — without writing code.
Pull live data into any Shopify workflow
When an order fires, MESA calls an external API and brings the response in as variables. Pricing feeds, fraud scores, or inventory levels from any service become available to every step that follows.
Send order details to your internal systems
MESA posts Shopify order data to your internal API or ERP the moment an order is created. Your operations and fulfillment tools stay current without custom middleware or manual exports.
Enrich orders with third-party data at checkout
MESA calls an external API at the moment of purchase — pulling fraud signals, shipping rates, or tax data — and uses the response to route or update the order before fulfillment starts.
Break sprawling automations into manageable pieces
Relay lets one workflow hand off to another, so each piece stays focused and easy to maintain. Update or reuse a single step without touching everything downstream.
Catch workflow failures before they cost you an order
When a workflow errors, Relay routes the failure to another workflow that retries the task, alerts your team, or reroutes the order. Nothing silently drops.
Let AI decide how to handle a broken workflow
Your AI assistant reviews the failed step, the data involved, and past outcomes, then chooses whether to retry, escalate, or reroute the task. No manual triage required.
Build any API and Relay automation
MESA helps you connect apps to automate repetitive tasks. A trigger is an event that starts a workflow, and actions are the steps that occur when it's running.
Trigger Workflow
Pass to Workflow - Hand off execution to another workflow by name.
- Task ID
- Error
API Key
Most common: for services that use a single copy-and-paste API key that is passed as a header.
- Key
- Value
Basic Auth
For services that make authenticated requests with a username and password.
- Key
- Value
No Authentication
Use for publicly-accessible APIs.
- Key
- Value
OAuth
Advanced: for services that use OAuth 2.0 refresh tokens for authentication.
- Key
- Value
Expert support included
MESA includes hands-on support from automation experts who know how to get things done.
Free workflow setup
We'll build your first workflow with you live. Most merchants walk away with automation saving 5+ hours/week.
Fast response times
Average first response: Same day. Critical issues: Immediate escalation. Complex builds: 24-48 hours.
Managed services available
Personalized workflow reviews, and quarterly check-ins to identify new opportunities as your business grows.
Real humans, always
Chat with real automation experts (not bots). Email support 9am-5pm PST. Google Meet sessions for complex workflows.
Integrate API with Relay today.
Enjoy a 7-day free trial. Get your first workflow in minutes.