Build on the Universell Platform
Integrate customers, appointments, messaging, marketing, payments, gift cards, and workflow automation into your applications using Universell APIs.
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Platform Capabilities
Explore what's possible with Universell
Everything you need to power customer journeys, appointments, commerce, marketing and automation through a unified platform.
Appointments & Scheduling
Create seamless booking experiences for salons, spas, clinics and service businesses.
Explore APIsCustomer & Loyalty
Manage customer profiles, memberships, rewards and personalized experiences.
Explore APIsCommerce & Payments
Handle transactions, subscriptions, gift cards and business revenue flows.
Explore APIsMarketing Automation
Launch campaigns and automate engagement based on customer activity.
Explore APIsAI Experiences
Create intelligent assistants that interact with customers and automate workflows.
Explore APIsIndustry Solutions
Launch tailored experiences for wellness, retail, healthcare and service businesses.
Explore APIsBuilt for
Built for teams extending the Universell platform
Create integrations, automate workflows, and build experiences on top of Universell's commerce and business operations platform.
Business Owners
Connect custom tools and automate business operations.
Developers
Build integrations using APIs for customers, appointments, messaging, and workflows.
Agencies
Manage multiple merchants and create scalable client solutions.
Marketers
Access customer data and automate engagement across channels.
Solution Blueprints
Launch faster with proven solutions
See how developers combine Universell APIs to create complete business applications.
Quickstart
Make your first API call in under a minute
Authenticate with your developer key and fetch your first appointment resource. SDKs available in Node, Python, PHP, Go, and .NET.
- Typed SDKs with first-class autocompletion
- Webhook signing & idempotency keys
- Sandbox environment with seeded data
# 1. Set your API key
export UNIVERSELL_KEY="uvs_live_••••••••••"
# 2. List today's appointments
curl https://api.universell.dev/v1/appointments \
-H "Authorization: Bearer $UNIVERSELL_KEY" \
-H "Content-Type: application/json"
# → 200 OK
# {
# "data": [
# { "id": "apt_28X", "customer": "Aria L.",
# "service": "Color & Style", "at": "10:30" }
# ],
# "has_more": true
# }
What's new
Everything you need to ship
API keys & scopes
Rotate, scope, and audit keys with granular permissions.
Learn moreRealtime webhooks
Signed, retried, and observable in the events inspector.
Learn moreMCP Integration
Enable AI assistants and autonomous agents to securely interact with business data and workflows.
Learn moreCLI & local sandbox
Spin up a sandboxed salon in one command for testing.
Learn moreGuides & recipes
Step-by-step integrations for the most common flows.
Learn morePartner support
Direct line to engineers via the Developers Hub.
Learn moreReady to build on Universell?
Access customers, appointments, messaging, payments, gift cards, and workflow automation through a single platform.