API Access

API Access An API (Application Programming Interface) is a way for different software systems to talk to each other. The Relaytiv API lets you (or your developer) automatically create contacts, send messages, manage lists, and receive incoming messages from custom channels — all without using the dashboard. Why use the API? If you want to connect the app to a tool that doesn't have a built-in integration, or you need to automate repetitive tasks at scale, the API is the way to do it. 📝 Note: This page is more technical in nature. If you are a business owner and not a developer, you may want to share this page with your technical team or a freelance developer. Generating Your API Key 📝 Note: API access is a paid feature available on qualifying plans. If your plan doesn't include it, API requests will be rejected with a 403 response. Check your plan or contact support if you're unsure whether API access is enabled. In the left sidebar, click Settings (gear icon). In the Settings sidebar, under the Integrations group, click API Key . API Key sits under the Integrations group in Settings, next to Webhooks and Booking & Calendar. If you don't have a key yet, click Generate API key . If you already have one, it's shown masked under Your key . If your key supports it, click Show to reveal it, then Copy to copy it — you'll see a confirmation toast. Store the key somewhere safe — you'll need it for every API request. Your key is shown masked. Older keys may show "Your key can't